期刊文献+
共找到4,710篇文章
< 1 2 236 >
每页显示 20 50 100
Selective encapsulation of azo compounds by tetracationic cyclophane in water and photo-controlled reversible release
1
作者 Baoqi Wu Rongzhi Tang +5 位作者 Zhi-Wei Li Feng Lin Zongyu Sun Huanyu Xia Lin Jiang Yu Tan 《Chinese Chemical Letters》 2025年第9期360-366,共7页
Many azo compounds and their intermediates are toxic and have been linked to various health issues,representing a growing global problem.Molecular engineering for selective encapsulation of azobenzene compounds is cri... Many azo compounds and their intermediates are toxic and have been linked to various health issues,representing a growing global problem.Molecular engineering for selective encapsulation of azobenzene compounds is critical,given their significant use in smart materials and prevalence as environmental micropollutants released from the food and dye industries.However,the current host molecules catering to azobenzene compounds are mainly limited to cyclodextrins,pillar[n]arenes and cucurbit[n]urils,demonstrating a moderate affinity.This report describes that a novel 3,3'-bipyridinium-based cyclophane was capable of encapsulating anionic azobenzene compounds in water with high binding affinity and pH stability through electrostatic attraction-enhanced mechanism,surpassing the extensively reported supramolecular systems.1D&2D NMR experiments,UV-vis spectrum,X-ray crystallography and computational modeling were carried out to understand the host-vip complexation.It's worth noting that the tetracationic cyclophane exhibited good selective and anti-interference encapsulation properties in binary,ternary and seawater systems.Furthermore,upon UV/white light irradiation,the reversible conversion between(E)-4,4'-azobisbenzoate and(Z)-4,4'-azobisbenzoate triggers the dissociation/recomplexation of the host-vip complex within 3 min.This reversible photo-switchable(E)-disodium 4,4'-azobisbenzoateBPy-Box^(4+)supramolecular system holds promise for designing novel materials for extraction/release of azo compounds and other small smart materials. 展开更多
关键词 CYCLOPHANE MACROCYCLE Molecular recognition Photo-switchable encapsulation
原文传递
A comprehensive review on the nutritional composition,bioactive potential,encapsulation techniques,and food system applications of guava(Psidium guajava L.)leaves
2
作者 Anjali Sahal Siddhant Chaudhary +5 位作者 Afzal Hussain Shubhangi Arora Ankita Dobhal Waseem Ahmad Vinod Kumar Sanjay Kumar 《Grain & Oil Science and Technology》 2025年第1期64-74,共11页
Guava(Psidium guajava L.),a plant belonging to the Myrtaceae family,holds significant medicinal and nutritional values.Leaves of the plant are described to be elliptical with a dark green color and are utilized in the... Guava(Psidium guajava L.),a plant belonging to the Myrtaceae family,holds significant medicinal and nutritional values.Leaves of the plant are described to be elliptical with a dark green color and are utilized in the treatment of gastrointestinal and respiratory issues along with increasing the platelet count in patients suffering from dengue.In this review paper,the nutritional composition and bioactive compounds of guava leaves,including proteins,vitamins,minerals,and polysaccharides,have been reviewed.The methods of extraction of bioactive compounds from guava leaves and their bioactivities,including antioxidant,anti-diabetic,and anti-cancer potential,have been explored.Further,encapsulation techniques for improving the transport of bioactive compounds and living cells into foods have been studied.The application of guava leaves in different food systems such as herbal tea,pork sausage,chocolates,jelly,meals for chickens,functional beverages,and as antibacterial agents in food preservatives has also been investigated.The findings of this review illustrated that the phytochemicals present in guava leaves showed excellent antimicrobial and antioxidant properties.Encapsulation appears to be a promising technique for improving the stability,bioavailability,and controlled release of bioactive chemicals extracted from guava leaves.Different methods for the encapsulation of bioactive compounds employed and applied in distinct food systems showed preservation of phytochemicals,improved bioactivities,and nutritional values.Overall,this review paper demonstrated how guava leaves,an abundant source of bioactive compounds,can be used as a multipurpose component to create functional foods,edible coatings,and active packaging to enhance the nutritional,antioxidant,and antimicrobial properties of various food systems that have qualities that promote health. 展开更多
关键词 Psidium guajava L. BIOAVAILABILITY EXTRACTION encapsulation Food system
在线阅读 下载PDF
Hesperidin encapsulation in mung bean isolate protein-dextran conjugate-stabilized nanoemulsions:Preparation and characterization
3
作者 Zixi Xue Xianrong Xiang +3 位作者 Jiaying Tang Wen Qin Guohua Zhang Qing Zhang 《Grain & Oil Science and Technology》 2025年第4期247-260,共14页
Encapsulation and protection of hesperidin(HES)in mung bean protein isolate(MPI)-dextran(DX)conjugatestabilized nanoemulsions(MDC NEs)were investigated in this study.The degree of grafting of MDC prepared by a dry-hea... Encapsulation and protection of hesperidin(HES)in mung bean protein isolate(MPI)-dextran(DX)conjugatestabilized nanoemulsions(MDC NEs)were investigated in this study.The degree of grafting of MDC prepared by a dry-heating method reached 39.70%±0.01% under the optimal conditions of MPI/DX mass ratio 1:2.3,reaction temperature 58.8℃,and reaction time 4 d.Moreover,the analyses of Fourier infrared spectroscopy,intrinsic fluorescence spectroscopy,surface hydrophobicity,and thermal stability further confirmed the covalent grafting of dextran onto MPI molecules.When encapsulated in MDC NEs at 80 MPa for three times by highpressure homogenization,the encapsulation efficiency and loading capacity of HES were 63.62%±0.01%and 0.40±0.00 g/g,respectively.The encapsulated HES exhibited higher antioxidant activity and stronger light and storage stability than the free HES.Additionally,the incorporation of HES inhibited the formation of lipid peroxides in the nanoemulsions.The findings suggest that glycosylation combined with high-pressure homogenization is an effective strategy for enhancing the stability of MPI-based emulsions and improving their encapsulation of HES.This study provides a promising approach for the development of innovative food and beverage products based on MPI emulsions or new materials for encapsulating fat-soluble bioactive compounds. 展开更多
关键词 Mung bean protein isolate-dextran conjugate NANOEMULSIONS encapsulation HESPERIDIN Stability
在线阅读 下载PDF
Encapsulation for efficient cryopreservation
4
作者 Kashan Memon Bing Zhang +1 位作者 Muhammad Azam Fareed Gang Zhao 《Frigid Zone Medicine》 2025年第2期73-80,共8页
Cryopreservation is a fundamental technology in biomedical research,regenerative medicine,and tissue engineering,enabling the long-term storage of cells,tissues,and organs.However,its effectiveness is limited by chall... Cryopreservation is a fundamental technology in biomedical research,regenerative medicine,and tissue engineering,enabling the long-term storage of cells,tissues,and organs.However,its effectiveness is limited by challenges such as intracellular ice formation,cryoprotectant toxicity,and reduced post-thaw viability.This review explores the crucial role of encapsulation in enhancing cryopreservation efficiency,with a focus on recent advances in materials science,bioengineering,and cryobiology.Emerging technologies,such as nanotechnology and stimuli-responsive polymers,are transforming encapsulation strategies.Innovations such as microfluidic systems offer precise control over cooling rates and cryoprotectant distribution,thereby mitigating conventional limitations.The review also addresses current obstacles related to scaling up encapsulation processes and ensuring the long-term biocompatibility and stability of preserved specimens.By synthesizing recent findings,this work provides a comprehensive resource for researchers and clinicians seeking to enhance biopreservation techniques and their applications in contemporary medicine and biotechnology.Finally,the review identifies critical knowledge gaps that must be addressed to improve the efficacy of cryopreservation strategies and advance their clinical translation. 展开更多
关键词 CRYOPRESERVATION encapsulation HYDROGELS BIOMATERIALS tissue engineering regenerative medicine NANOTECHNOLOGY smart polymers
原文传递
Review on high-temperature macroencapsulated phase change materials:Encapsulation strategy,thermal storage system,and optimization
5
作者 Yi Yang Xiaojie Guo +2 位作者 Meng Liu Hang Yang Deqiu Zou 《Journal of Energy Chemistry》 2025年第5期324-359,共36页
High-temperature phase change materials(PCMs)have attracted significant attention in the field of thermal energy storage due to their ability to store and release large amounts of heat within a small temperature fluct... High-temperature phase change materials(PCMs)have attracted significant attention in the field of thermal energy storage due to their ability to store and release large amounts of heat within a small temperature fluctuation range.However,their practical application is limited due to problems such as leakage,corrosion,and volume changes at high temperatures.Recent research has shown that macroencapsulation technology holds promise in addressing these issues.This paper focuses on the macroencapsulation technology of high-temperature PCMs,starting with a review of the classification and development history of high-temperature macroencapsulatd PCMs.Four major encapsulation strategies,including electroplating method,solid/liquid filling method,sacrificial material method,and powder compaction into sphere method,are then summarized.The methods for effectively addressing issues such as corrosion,leakage,supercooling,and phase separation in PCMs are analyzed,along with approaches for improving the heat transfer performance,mechanical strength,and thermal cycling stability of macrocapsules.Subsequently,the structure and packing arrangement optimization of macrocapsules in thermal storage systems is discussed in detail.Finally,after comparing the performance of various encapsulation strategies and summarizing existing issues,the current technical challenges,improvement methods,and future development directions are proposed.More attention should be given to utilizing AI technology and reinforcement learning to reveal the multiphysics-coupled heat and mass transfer mechanisms in macrocapsule applications,as well as to optimize material selection and encapsulation parameters,thereby enhancing the overall efficiency of thermal storage systems. 展开更多
关键词 Phase change materials Macroencapsulation Macrocapsules Thermal energy storage encapsulation strategy
在线阅读 下载PDF
Site-specific surface amination strategy facilitates biomimetic encapsulation of enzymes within hydrogen-bonded organic framework
6
作者 Haoquan Huang Haiting Chen +8 位作者 Xinran Dong Yanbin Xu Anlian Huang Qiaoyi Cen Huairou Zhu Guosheng Chen Wei Yi Siming Huang Gangfeng Ouyang 《Chinese Chemical Letters》 2025年第9期372-378,共7页
Hydrogen-bonded framework(HOF) offers an attractive platform to encapsulate enzymes and stabilize their conformation,due to the advantages of mild synthesis conditions,tailorable pore structure,and backbone biocompati... Hydrogen-bonded framework(HOF) offers an attractive platform to encapsulate enzymes and stabilize their conformation,due to the advantages of mild synthesis conditions,tailorable pore structure,and backbone biocompatibility.However,the efficiency of this HOF approach relies on the interfacial interactions between enzyme vip and the ligand precursors,limiting its adaptability to enzymes with varying surface chemistry property.In this study,we report a site-specific surface modification strategy to positively tailor the enzyme surface charge,facilitating the biomimetic encapsulation of enzymes within HOF in situ.Both experimental results and computational simulation reveal that site-specific amination of enzyme surface's acidic residues contributes to the interfacial accumulation of carboxylic ligand precursors in aqueous solutions via synergistic electrostatic and hydrogen bonding interactions.This substantially facilitates the in situ growth of porous HOF surrounding the aminated enzyme biotemplates,with up to 100% enzyme loading efficiency.The resultant hydrogen-bonded biohybrid framework(HBF) retains high biocatalytic functions while exhibiting exceptional stability under harsh conditions.By leveraging the marked catalytic activity of GOx-NH_(2)@HBF-1 and a H_(2)O_(2)-sensitive QD,a highly sensitive glucose fluorescence sensor is fabricated with a wide linear range(5-2000 μmol/L) and a low quantification limit of 5 μmol/L.This work presents a simple yet effective enzyme surface engineering approach for integrating enzyme into HOF,opening new avenues for the construction of multifunctional HOF biocomposites. 展开更多
关键词 Enzyme immobilization Chemical modification Hydrogen-bonded organic framework In situ encapsulation Sensor
原文传递
Single-molecule dynamic dissociation and polymerization-governed in situ repair and encapsulation for high-performance perovskite solar cells
7
作者 Xianfei Cao Yong Qi +6 位作者 Wenshuai Zhao Zengyao Guo Tong Hu Zhengyang Gao Wenchao Han Lei Li Shufen Zhang 《Journal of Energy Chemistry》 2025年第10期923-930,共8页
Despite the ongoing increase in the efficiency of perovskite solar cells(PSCs),residual lead iodide(PbI2and moisture sensitivity issues continue to constrain their further commercialization.Herein,we propose a thermal... Despite the ongoing increase in the efficiency of perovskite solar cells(PSCs),residual lead iodide(PbI2and moisture sensitivity issues continue to constrain their further commercialization.Herein,we propose a thermally mediated in situ repair and encapsulation strategy to construct high-performance PSCs by incorporating piperazine thioctic acid salt(TAPPZ)as a dopant into the perovskite precursor Thermally dissociated piperazine(PPZ)from TAPPZ integrates microcrystals to form larger grain(>2000 nm),while the carboxylic acid in thioctic acid(TA)and the amine salt in TAPPZ synergistically passivate and transform PbI_(2),significantly reducing its residual amount.Additionally,TAPPZ undergoe thermal self-crosslinking during perovskite annealing,enabling melt-polymerization to form in situ encapsulation for enhanced water resistance.The TAPPZ-incorporated device achieves a remarkable efficiency of 25.65% and exhibits excellent operational stability,retaining over 90% of its initial efficiency after 2000 h under ambient conditions(20-30℃,20%-30% relative humidity).This study provide new insights into the construction of high-performance perovskite solar cells by designing and synthe sizing multifunctional single molecules for in situ repair and encapsulation of perovskites. 展开更多
关键词 Perovskite solar cells Multifunctional single-molecule Piperazine thioctic acid salt In situ repair In situ encapsulation
在线阅读 下载PDF
The Temperature and Voltage Resistance Performance of Phenyl-Modified Silicone Elastomers for High-Voltage and High-Power Semiconductor Device Encapsulation
8
作者 Dongxin He Haochen Wang +3 位作者 Yuchao Li Yue Wang Qingfa Li Qingquan Li 《High Voltage》 2025年第5期1135-1143,共9页
Silicon carbide(SiC)high-voltage,high-power semiconductor devices are essential for next-generation power systems,yet conventional silicone elastomer encapsulation materials suffer from insulation degradation under ex... Silicon carbide(SiC)high-voltage,high-power semiconductor devices are essential for next-generation power systems,yet conventional silicone elastomer encapsulation materials suffer from insulation degradation under extreme thermal and electrical stresses,highlighting the critical need for novel dielectric materials.This article brings phenyl groups into the side group of conventional silicone elastomers through ring-opening polymerisation and hydrosilylation,developing phenyl-modified silicone elastomers.The material's superior thermal resistance is substantiated through thermal ageing and thermogravimetric analysis.Moreover,this study delineates the insulating robustness of the material by gauging its dielectric breakdown voltage.By subjecting the material to pulse electric fields,we investigate the insulating properties of the encapsulation material under operational conditions reflective of actual service environments.Dielectric testing and molecular electrostatic potential simulations are further employed to analyse the enhancement of the material's insulating properties due to the introduction of phenyl groups.Research studies indicate that phenyl silicone elastomers exhibit outstanding temperature and electrical resistance,performing well under pulsed electric field.This is associated with the phenyl group's rigid structure,conjugated system,and its electron-withdrawing characteristics.Study provides a theoretical foundation for improving the insulating properties of encapsulation materials and the operational reliability of power electronic devices. 展开更多
关键词 novel dielectric materialsthis phenyl groups silicone elastomers silicone elastomer encapsulation materials voltage resistance pulse electric fields phenyl modified silicone elastomers thermal resistance
在线阅读 下载PDF
Effect of Experimental Parameters on the Encapsulation of Insulin-loaded Poly(lactide-co-glycolide) Nanoparticles Prepared by a Double Emulsion Method 被引量:3
9
作者 潘妍 赵会英 +3 位作者 徐晖 魏刚 郝劲松 郑俊民 《Journal of Chinese Pharmaceutical Sciences》 CAS 2002年第1期38-41,共4页
Insulin-loaded poly(lactide-co-glycolide) nanoparticles (INS-PLGA-NPs) were prepared by a double emulsion method (w/o/w), using ethyl acetate as organic solvent and poloxamer188 as emulsifier. Experimental parameter... Insulin-loaded poly(lactide-co-glycolide) nanoparticles (INS-PLGA-NPs) were prepared by a double emulsion method (w/o/w), using ethyl acetate as organic solvent and poloxamer188 as emulsifier. Experimental parameters such as the emulsifier and PLGA concentrations, the pH and concentration of the insulin solution, the solvent evaporation method and PVA in the internal phase were investigated for the encapsulation efficiency. The results indicated that higher emulsifier concentration, relatively less amount of PLGA and lower insulin concentration would increase the entrapment of insulin. Furthermore, pH of insulin solution approaching to pI (5.3), adding some PVA to the internal phase and a shorter evaporation time helped to enhance the incorporation efficiency of insulin. Optimized preparation parameters led to nanoparticles with well-defined characteristics such as an average size around 149.6 nm, a polydispersity lower than 0.1 and high encapsulation efficiency up to 42.8%. 展开更多
关键词 NANOPARTICLES PLGA encapsulation
暂未订购
Congenital peritoneal encapsulation: A review and novel classification system 被引量:3
10
作者 Aneesh Dave James Mc Mahon Assad Zahid 《World Journal of Gastroenterology》 SCIE CAS 2019年第19期2294-2307,共14页
Congenital peritoneal encapsulation(CPE) is a very rare, congenital condition characterised by the presence of an accessory peritoneal membrane which encases a variable extent of the small bowel. It is unclear how CPE... Congenital peritoneal encapsulation(CPE) is a very rare, congenital condition characterised by the presence of an accessory peritoneal membrane which encases a variable extent of the small bowel. It is unclear how CPE develops,however it is currently understood to be a result of an aberrant adhesion in the peritoneal lining of the physiological hernia in foetal mid-gut development. The condition was first described in 1868, and subsequently there have been only 45 case reports of the phenomenon. No formal, systematised review of CPE has yet been performed, meaning the condition remains poorly understood,underdiagnosed and mismanaged. Diagnosis of CPE remains clinical with important adjuncts provided by imaging and diagnostic laparoscopy. Two thirds of patients present with abdominal pain, likely secondary to sub-acute bowel obstruction. A fixed, asymmetrical distension of the abdomen and differential consistency on abdominal palpation are more specific clinical features present in approximately 10% of cases. CPE is virtually undetectable on plain imaging, and is only detected on 40% of patients with computed tomography scan. Most patients will undergo diagnostic laparotomy to confirm the diagnosis.Management of CPE includes both medical management of the critically-unstable patient and surgical laparotomy, partial peritonectomy and adhesiolysis.Prognosis following prompt surgical treatment is excellent, with a majority of patients being symptom free at follow up. This review summarises the current literature on the aetiology, diagnosis and treatment of this rare disease. We also introduce a novel classification system for encapsulating bowel diseases, which may distinguish CPE from the commoner, more morbid conditions of abdominal cocoon and encapsulating peritoneal sclerosis. 展开更多
关键词 CONGENITAL encapsulation PERITONEUM COCOON SCLEROSIS
暂未订购
Run by Run Control of Time-pressure Dispensing for Electronics Encapsulation 被引量:5
11
作者 Cong-Ping Chen Han Ding 《International Journal of Automation and computing》 EI 2008年第4期419-424,共6页
To alleviate the influence of gas compressibility on the process performance of time-pressure dispensing for electronics encapsulation,a predictive model is developed based on power-law fluid to estimate the encapsula... To alleviate the influence of gas compressibility on the process performance of time-pressure dispensing for electronics encapsulation,a predictive model is developed based on power-law fluid to estimate the encapsulant amount dispensed.Based on the simple and effective model,a run by run (RbR) supervisory control scheme is delivered to compensate the variation resulting from gas volume change in the syringe.Both simulation and experiment have shown that the dispensing consistency has been greatly improved with the model-based RbR control strategy developed in this paper. 展开更多
关键词 Time-pressure dispensing predictive model run by run (RbR) control electronics encapsulation.
在线阅读 下载PDF
Improving the stability and bioavailability of tea polyphenols by encapsulations:a review 被引量:10
12
作者 Zhiya Yin Ting Zheng +3 位作者 Chi-Tang Ho Qingrong Huang Qingli Wu Man Zhang 《Food Science and Human Wellness》 SCIE 2022年第3期537-556,共20页
Tea polyphenols(TPPs)have attracted significant research interest due to their health benefits.However,TPPs are sensitive to certain environmental and gastrointestinal conditions and their oral bioavailability was fou... Tea polyphenols(TPPs)have attracted significant research interest due to their health benefits.However,TPPs are sensitive to certain environmental and gastrointestinal conditions and their oral bioavailability was found to be very low.Delivery systems made of food-grade materials have been reported to improve the shelf-life,bioavailability and bioefficacy of TPPs.This review discusses the chemistry of TPPs;the setbacks of TPPs for application;and the strategies to counteract application limitations by rationally designing delivery systems.An overview of different formulations used to encapsulate TPPs is provided in this study,such as emulsion-based systems(liposome,nanoemulsion,double emulsion,and Pickering emulsion)and nano/microparticles-based systems(protein-based,carbohydrate-based,and bi-polymer based).In addition,the stability,bioavailability and bioactivities of encapsulated TPPs are evaluated by various in vitro and in vivo models.The current findings provide scientific insights in encapsulation approaches for the delivery of TPPs,which can be of great value to TPPs-fortified food products.Further explorations are needed for the encapsulated TPPs in terms of their applications in the real food industry as well as their biological fate and functional pathways in vivo. 展开更多
关键词 Tea polyphenols encapsulation Stability BIOAVAILABILITY Bioefficacy
在线阅读 下载PDF
Encapsulation in the Food Industry: A Brief Historical Overview to Recent Developments 被引量:2
13
作者 Yakindra Prasad Timilsena Md. Amdadul Haque Benu Adhikari 《Food and Nutrition Sciences》 2020年第6期481-508,共28页
Encapsulation in food industry serves several functions including masking of undesirable color/flavor/taste, preservation of unstable constituents, incor<span style="font-family:Verdana;">poration of a... Encapsulation in food industry serves several functions including masking of undesirable color/flavor/taste, preservation of unstable constituents, incor<span style="font-family:Verdana;">poration of additional functional and nutritional components and site-specific</span><span style="font-family:Verdana;"> release of encapsulated ingredients at a controlled time and rate. The knowledge of microencapsulation in other sectors like pharmaceutical industry is well advanced;however, more understanding is required to harvest the maximum benefits from food industry. This paper started with highlighting the gradual progress of microencapsulation process in food industry and ended up with some invaluable suggestions for future works. In the body, the paper reviews the major techniques of food encapsulation, choices of coating materials and the performance measurement methods of food encapsulation. Future trends, scopes and aspects of microencapsulation process in food manufacturing sector are also presented as the necessary recommendations for future researches. The article would help the microencapsulated food manufacturers to choose the target oriented encapsulates and suitable encapsulation technique.</span> 展开更多
关键词 MICROencapsulation Shell Materials Core Materials encapsulation Techniques encapsulation Efficiency Controlled Release
在线阅读 下载PDF
MoS2 nanorods with inner caves through synchronous encapsulation of sulfur for high performance Li–S cathodes 被引量:6
14
作者 Yikun Yi Zechen Liu +6 位作者 Pu Yang Tao Wang Xuewen Zhao Hongyang Huang Yonghong Cheng Jinying Zhang Mingtao Li 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2020年第6期18-24,I0002,共8页
Lithium–sulfur(Li–S)batteries have become one of the most promising candidates for next-generation batteries owing to their high specific capacity,low cost,and environment-friendliness.Many efforts have been made to... Lithium–sulfur(Li–S)batteries have become one of the most promising candidates for next-generation batteries owing to their high specific capacity,low cost,and environment-friendliness.Many efforts have been made to mitigate the"shuttle effect"through physical adsorption and chemical bonding.MoS2 has been proposed as a cathode material to provide effective anchoring sites for lithium polysulfides(Li PSs),but is still limited by its layer structure.Herein,we designed novel MoS2 nanorods with inner caves based on our previous work,and performed synchronous encapsulation of sulfur during the synthesis process.The outer MoS2 tubular shells physically inhibit the outward diffusion of polysulfide species while the inner particles chemically anchor the polysulfides to prevent shuttling.As the cathode matrix in Li–S batteries,the electrochemical results deliver a high initial discharge capacity of 1213 mAhg^-1 for sulfur at 0.1 C.After cycling at 1 C for 300 cycles,the cells exhibit a capacity decay of only 0.076%per cycle and high average coulombic efficiency over 95%.The tubular MoS2 structure is an innovative and appealing design,which could be regarded as a prospective substrate for the improved performance of Li–S batteries. 展开更多
关键词 MOS2 nanorod INNER caves SYNCHRONOUS encapsulation of SULFUR Cathode matrix
在线阅读 下载PDF
High-Performance All-Printed Flexible Micro-Supercapacitors with Hierarchical Encapsulation 被引量:3
15
作者 Yuhang Yuan Wei Yuan +10 位作者 Yaopeng Wu Xuyang Wu Xiaoqing Zhang Simin Jiang Bote Zhao Yu Chen Chenghao Yang Liangxin Ding Zhenghua Tang Yingxi Xie Yong Tang 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2024年第4期262-268,共7页
Printed micro-supercapacitors(MSCs)have shown broad prospect in flexible and wearable electronics.Most of previous studies focused on printing the electrochemically active materials paying less attention to other key ... Printed micro-supercapacitors(MSCs)have shown broad prospect in flexible and wearable electronics.Most of previous studies focused on printing the electrochemically active materials paying less attention to other key components like current collectors and electrolytes.This study presents an allprinting strategy to fabricate in-plane flexible and substrate-free MSCs with hierarchical encapsulation.This new type of“all-in-one”MSC is constructed by encapsulating the in-plane interdigital current collectors and electrodes within the polyvinyl-alcohol-based hydrogel electrolyte via sequential printing.The bottom electrolyte layer of this fully printed MSCs helps protect the device from the limitation of conventional substrate,showing excellent flexibility.The MSCs maintain a high capacitance retention of 96.84%even in a completely folded state.An optimal electrochemical performance can be achieved by providing ample and shorter transport paths for ions.The MSCs using commercial activated carbon as the active material are endowed with a high specific areal capacitance of 1892.90 mF cm^(-2)at a current density of 0.3 mA cm^(-2),and an outstanding volumetric energy density of 9.20 mWh cm^(-3)at a volumetric power density of 6.89 mW cm^(-3).For demonstration,a thermo-hygrometer is stably powered by five MSCs which are connected in series and wrapped onto a glass rod.This low-cost and versatile all-printing strategy is believed to diversify the application fields of MSCs with high capacitance and excellent flexibility. 展开更多
关键词 all-printing FLEXIBLE hierarchical encapsulation micro-supercapacitors substrate-free
在线阅读 下载PDF
Micro-encapsulation of Pacific white shrimp oil as affected by emulsification condition 被引量:5
16
作者 Sirima Takeungwongtrakul Soottawat Benjakul Aran H-kittikun 《Food Science and Human Wellness》 SCIE 2014年第3期175-182,共8页
Micro-encapsulation of shrimp oil using the mixture of whey protein concentrate(WPC)and sodium caseinate(SC)(1:1,w/w)as a wall material was carried out.The impact of core/wall material ratios(1:2 and 1:4,w/w)and homog... Micro-encapsulation of shrimp oil using the mixture of whey protein concentrate(WPC)and sodium caseinate(SC)(1:1,w/w)as a wall material was carried out.The impact of core/wall material ratios(1:2 and 1:4,w/w)and homogenizing pressures(13.79 and 27.58 MPa)on characteristics and stability of emulsion was investigated.The size of emulsion oil droplets decreased with increasing homogenizing pressure(P<0.05)but was not influenced by core/wall material ratio(P>0.05).During the extended storage,particle size,flocculation factor(Ff)and coalescence index(Ci)of all emulsions sharply increased,especially in emulsions prepared at 13.79 MPa with a core/wall material ratio of 1:2(P<0.05).After spray drying,micro-encapsulated shrimp oil(MSO)prepared at 13.79 MPa with a core/wall material ratio of 1:2 had the larger size than others(P<0.05).MSO prepared using a core/wall material ratio of 1:4 with homogenizing pressure of 27.58 MPa exhibited higher encapsulation efficiency(EE)(51.3%–52.8%)than others.Thus,both core/wall material ratio and homogenizing pressure directly affected micro-encapsulation of shrimp oil. 展开更多
关键词 Shrimp oil EMULSION Pressure encapsulation Spray drying
在线阅读 下载PDF
ENCAPSULATION OF STRONG SOLID ACID NANOPARTICLES IN MESOPOROUS CHANNEL HOSTS 被引量:1
17
作者 Chen Changlin and Xu Nanping, Mou Chungyuan and Cheng Soofin (College of Chemical Engineering, Naming University of Chemical Technology, Nanjing 210009) (Department of Chemistry, National Taiwan University, Taipei 106) 《化工学报》 EI CAS CSCD 北大核心 2000年第S1期57-60,共4页
Mesoporous molecular sieve with Al-promoted sulfated rirconia (SZA) based strong solid acid nano-particles within its mesoporous channels was synthesized by using a one-step incipient wetness impregnation method with ... Mesoporous molecular sieve with Al-promoted sulfated rirconia (SZA) based strong solid acid nano-particles within its mesoporous channels was synthesized by using a one-step incipient wetness impregnation method with zirconium sulfate and aluminum sulfate as the precursors. The assemblies of SZA/MCM-41 were obtained by thermal decomposition of the precursors in air.The resultant composite was characterized with various techniques such as nitrogen physisorption, X-ray diffraction, SEM and TEM. It was shown that the well-ordered channels of MCM-41 arranged in hexagonal arrays as well as the hollow tubular morphology was retained. The strong solid acid nanoparticles were isolated born each other and highly, dispersed in the channels. Nitrogen sorption showed the expected decrease in pore volume. The catalytic activity of SZA/MCM-41 composite in the isomerization of n-butane was dramatically improved in comparison to bulk SZA or SZA/silica. 展开更多
关键词 Mesoporous molecular sieve strong solid acid NANOPARTICLE encapsulation
在线阅读 下载PDF
Microencapsulation of dodecyl acetate by complex coacervation of whey protein with acacia gum and its release behavior 被引量:1
18
作者 You Tong Yu Li Na Liu +1 位作者 Xiao Li Zhu Xiang Zheng Kong 《Chinese Chemical Letters》 SCIE CAS CSCD 2012年第7期847-850,共4页
Complex coacervation of whey protein(WP) with acacia gum(AG) was carried out in water with the presence of dodecyl acetate (DA),a component of insect sex pheromones,in order to obtain microcapsules with DA as th... Complex coacervation of whey protein(WP) with acacia gum(AG) was carried out in water with the presence of dodecyl acetate (DA),a component of insect sex pheromones,in order to obtain microcapsules with DA as the core material and WP-AG coacervate as the wall materials.Through variations in wall/core ratios,concentrations of the wall materials in capsule preparations,DA encapsulation was optimized,which showed a high DA encapsulation was achieved when coacervation was conducted at pH 3.5 with wall/core mass ratio at 3 combined with concentration of wall materials at 1.0 wt%.Morphology and the structure of DA loaded microcapsules were examined by scanning electron microscope,which showed the microcapsules were of core/shell structure with DA encapsulated in the inner of the microcapsules.DA release was examined and the behavior of the release was discussed. 展开更多
关键词 Whey protein Acacia gum Complex coacervation Insect pheromone encapsulation Controlled release
原文传递
Study ofβ-cyclodextrin differential encapsulation of essential oil components by using mixture design and NIR:Encapsulation ofα-pinene,myrcene,and 3-carene as an example 被引量:3
19
作者 Zhe Li Yuan Ding +5 位作者 Hao Huang Kexin Wang Jiayi Wu Lin Zhu Zhenggen Liao Liangshan Ming 《Journal of Chinese Pharmaceutical Sciences》 CAS CSCD 2021年第6期524-537,共14页
The encapsulation of essential oil components in cyclodextrins(CDs)to form inclusion complexes(ICs)is an effective strategy for improving their stability and bioaccessibility.The aim of the present study was to obtain... The encapsulation of essential oil components in cyclodextrins(CDs)to form inclusion complexes(ICs)is an effective strategy for improving their stability and bioaccessibility.The aim of the present study was to obtain a deeper understanding of the encapsulation behavior of multi-components inβ-CD.vip molecules ofα-pinene,myrcene,and 3-carene,having the same molecular weight,formed ICs withβ-CD by a freeze-drying method.A simplex lattice mixture design with 28 experiments was carried out.Statistical analysis was applied to analyze the encapsulation behavior of vip components,and quantitative models of vip components in ICs were constructed by coupling with near-infrared(NIR)spectroscopy and chemometrics analysis.Besides,the molecular docking technique was used to obtain the optimal conformation and explain the binding behavior of inclusion.The results suggested that the spatial structure and ratio of vip molecules were the key factors affecting the encapsulation effect.A non-destructive and rapid NIR analytical model for the vip component in ICs could be obtained by second derivative(2nd der)pretreatment.Collectively,the encapsulation of vip components inβ-CD was differentiated,and NIR could be used as a rapid and non-destructive tool for quantitative analysis of ICs. 展开更多
关键词 Inclusion complexes CYCLODEXTRIN Differential encapsulation NIR spectroscopy Molecular docking
原文传递
Encapsulation strategies on 2D materials for field effect transistors and photodetectors 被引量:2
20
作者 Wenjuan Huang Yue Zhang +5 位作者 Mengting Song Bugao Wang Huayi Hou Xiaozong Hu Xiangbai Chen Tianyou Zhai 《Chinese Chemical Letters》 SCIE CAS CSCD 2022年第5期2281-2290,共10页
Two-dimensional(2D)layered materials provide a promising alternative solution for overcoming the scal-ing limits in conventional Si-based devices.However,practical applications of 2D materials are facing crucial bottl... Two-dimensional(2D)layered materials provide a promising alternative solution for overcoming the scal-ing limits in conventional Si-based devices.However,practical applications of 2D materials are facing crucial bottlenecks,particularly that arising from the instability under ambient condition.The studies of degradation mechanisms and protecting strategies for overcoming the ambient instability of 2D materials have attracted extensive research attentions,both experimentally and theoretically.This review attempts to provide an overview on the recent progress of the encapsulation strategies for 2D materials.The en-capsulation strategies of mechanical transfer,polymer capping,atomic layer deposition,in-situ oxidation,and surface functionalization are systematically discussed for improving the ambient stability of 2D mate-rials.In addition,the current advances in air-stable and high-performance 2D materials-based field effect transistors(FETs)and photodetectors assisted by the encapsulation strategies are outlined.Furthermore,the future directions of encapsulation techniques of 2D materials for FETs and photodetectors applications are suggested. 展开更多
关键词 Two-dimensional materials encapsulation DEGRADATION Stability Field effect transistors PHOTODETECTORS
原文传递
上一页 1 2 236 下一页 到第
使用帮助 返回顶部