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Multilayered structure of N-carbonenvelopediron oxide/graphene nanocomposites as an improved anode for Li-ion battery 被引量:2
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作者 Li Sun Kai Wang +3 位作者 Ningning Li Jun Zhang Xiangxin Guo Xianghong Liu 《Chinese Chemical Letters》 SCIE CAS CSCD 2020年第9期2333-2338,共6页
Transition metal oxides with high capacity are considered a promising electrode material for lithium-ion batteries(LIBs).Nevertheless,the huge volume expansion and poor conductivity severely hamper their practical app... Transition metal oxides with high capacity are considered a promising electrode material for lithium-ion batteries(LIBs).Nevertheless,the huge volume expansion and poor conductivity severely hamper their practical application.In this work,a carbon riveting method is reported to address the above issues by designing multilayered N-doped carbon(N-carbon) enveloped Fe3O4/graphene nanosheets.When evaluated as a negative electrode,the N-carbon/Fe3O4/graphene nanocomposites demonstrate greatly enhanced electrochemical properties compared with Fe3O4/graphene.The N-carbon/Fe3O4/graphene presents a superior reversible capacity(807 mAh/g) over Fe3O4/graphene(540 mAh/g).Furthermore,it affords a considerable capacity of 550 mAh/g at 1 A/g over 700 cycles,indicating supe rb cycling stability.The structure-property correlation studies reveal that the carbon riveting layer is essential for enhancing the lithium diffusion kinetics.The good electrochemical properties and effective structure design make the carbon riveting strategy quite general and reliable to manipulate high performance electrodes for future LIBs. 展开更多
关键词 FE3O4 NANOSHEET N-doped carbon ANODE Lithium-ion batteries
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Reduction of Patulin Content in Apple Juice Using Activated Carbone
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作者 Khatuna Mamalashvili 《Journal of Chemistry and Chemical Engineering》 2013年第9期872-875,共4页
The mycotoxin, patulin (4-hydroxy-4H-furo [3, 2c] pyran-2 [6H]-one), is produced by a number of fungi common to fruit and vegetable-based products, most notably apples. Patulin contamination within apple products po... The mycotoxin, patulin (4-hydroxy-4H-furo [3, 2c] pyran-2 [6H]-one), is produced by a number of fungi common to fruit and vegetable-based products, most notably apples. Patulin contamination within apple products poses a serious health risk to consumers. Studies done on laboratory animals have demonstrated that patulin has a broad spectrum of toxicity, including mutagen city and carcinogenicity. The aim of the experiment was studying influence of selectively acting activated carbon powder--Ercarbon SH (Erbsloh, Germany) which is special produced for lowering HMF (hydroxy methyl furfural), on reduction of patulin content in clear apple juice. Industrial apple row material with some damaged parts was pressed, juice was pasteurized at 95 ℃ during 2 min. After cooling on 55 ℃, enzymatic treated and clarified juice were filtered by 0.45 [am pore sizes membrane filter, Apple clear juice sample was divided for five parts. The samples of apple juice were diluted to 11.5° Brix and contacted with concentrations of 2, 2.5, 3 and 3.5 g/L activated carbon powder for 30 min. After filtration in the experimental samples, putulin was quantitatively determined by HPLC (high performance liquid chromatography with UV) detector at 276 nm. The research revealed that the best results were achieved by treatment with activated carbon in its powder form at concentration of 2.5 g/L with 30 min contact time. 展开更多
关键词 PATULIN clear apple juice activated carbon HPLC.
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Research progress on the kinetics of methane-carbon dioxide reforming catalyzed by nickel-based catalysts
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作者 HU Jingtao WU Jie +2 位作者 DENG Bangqiang LIU Dawei XU Long 《燃料化学学报(中英文)》 北大核心 2026年第2期21-45,共25页
Under the backdrop of“Carbon Peak and Carbon Neutrality”(dual carbon)goal in China,the methane-carbon dioxide reforming reaction has attracted considerable attention due to its environmental benefits of converting t... Under the backdrop of“Carbon Peak and Carbon Neutrality”(dual carbon)goal in China,the methane-carbon dioxide reforming reaction has attracted considerable attention due to its environmental benefits of converting two greenhouse gases(methane and carbon dioxide)into syngas and its promising industrial applications.Nickel(Ni)-based catalysts,with high catalytic activity,low cost,and abundant resources,are considered ideal candidates for industrial applications.In this article,three reaction kinetic models were briefly introduced,namely the Power-Law(PL)model,the Eley-Rideal(ER)model,and the Langmuir-Hinshelwood-Hougen-Watson(LHHW)model.Based on the LHHW model,the reaction kinetics and mechanisms of different catalytic systems were systematically discussed,including the properties of supports,the doping of noble metals and transition metals,the role of promoters,and the influence of the geometric and electronic structures of Ni on the reaction mechanism.Furthermore,the kinetics of carbon deposition and elimination on various catalysts were analyzed.Based on the reaction rate expressions for carbon elimination,the reasons for the high activity of transition metal iron(Fe)-doped catalysts and core-shell structured catalysts in carbon elimination were explained.Based on the detailed collation and comparative analysis of the reaction mechanisms and kinetic characteristics across diverse Ni-based catalytic systems,a theoretical guidance for the designing of high-performance catalysts was provided in this work. 展开更多
关键词 carbon dioxide reforming of methane CATALYST model KINETICS carbon deposit
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Comparative studies on nanocarbon-modified carbon paper electrodes for enhanced electrocatalytic performance in vanadium redox flow batteries
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作者 Jaeho Jo Jaeeon Chang Doohwan Lee 《新型炭材料(中英文)》 北大核心 2026年第1期196-208,共13页
Vanadium redox flow batteries(VRFBs)are a means of large-scale energy storage due to their excellent scalability,safety,long cycling life,and decoupled power and energy capacities.However,the slow redox kinetics of va... Vanadium redox flow batteries(VRFBs)are a means of large-scale energy storage due to their excellent scalability,safety,long cycling life,and decoupled power and energy capacities.However,the slow redox kinetics of vanadium species on conventional carbon electrodes remains a major limitation to their performance.We investigated the deposition of carbon black,carbon nanotubes,and electrochemically exfoliated graphene(Exf-Gr)onto thermally-activated carbon paper(ACP)by spray coating to increase the electrode electrocatalytic activity.The modified electrodes were characterized using scanning electron microscopy,X-ray diffraction,Raman spectroscopy,X-ray photoelectron microscopy,and surface area analysis,while their electrochemical properties were evaluated by cyclic voltammetry,electrochemical impedance spectroscopy,and singlecell VRFB testing.Among the modified electrodes,Exf-Gr/ACP had the best performance,achieving a 2.9-fold reduction in charge transfer resistance compared to pristine ACP and delivering 2.5 times the discharge capacity in single-cell tests.This improvement is attributed to Exf-Gr’s high surface area,favorable catalytic activity,and excellent dispersion on the ACP substrate.Surface modification with electrochemically exfoliated graphene is a highly effective strategy for improving the electrode performance in VRFB systems,with significant implications for large-scale energy storage. 展开更多
关键词 Vanadium redox flow battery Carbon paper electrode Exfoliated graphene Carbon nanotube ELECTROCATALYSIS
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Structure-activity correlation mechanism of additive-modified Cu-based catalysts for methanol synthesis via CO_(2)hydrogenation
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作者 HUANG Wenbin SI Meng +4 位作者 XU Zhen YANG Han BAI Tianyu ZHOU Yasong WEI Qiang 《燃料化学学报(中英文)》 北大核心 2026年第2期76-87,共12页
Aiming at the problems of insufficient activity and selectivity of Cu-based catalysts in CO_(2)hydrogenation to methanol,Al_(2)O_(3),ZrO_(2)and CeO_(2)modified Cu-ZnO catalysts by the co-precipitation method were prep... Aiming at the problems of insufficient activity and selectivity of Cu-based catalysts in CO_(2)hydrogenation to methanol,Al_(2)O_(3),ZrO_(2)and CeO_(2)modified Cu-ZnO catalysts by the co-precipitation method were prepared,and the influence mechanism of additives on the structure-performance relationship of the catalysts was systematically explored.Through a variety of characterization methods such as XRD,N2 physical adsorption-desorption,TEM,H_(2)-TPR,CO_(2)-TPD and XPS,combined with catalytic performance evaluation experiments,the correlation between the microstructure of catalysts and the reaction performance of CO_(2)hydrogenation to methanol was analyzed in depth.The results show that metal additives significantly improve the performance of catalysts.After the introduction of additives,the specific surface area and pore volume of the catalysts increase,the grain size of Cu decreases,and its dispersion improves.The Ce-modified CZC catalyst exhibited the best performance,with the grain size of CuO as small as 11.41 nm,and the surface oxygen vacancy concentration(OⅡ/OⅠ=3.15)was significantly higher than that of other samples.The reaction performance test shows that under the conditions of 2.8 MPa,8000 h−1 and 280℃,the CO_(2)conversion of the CZC catalyst reached 18.83%,the methanol selectivity was 68.40%,and the methanol yield was 12.88%,all of which are superior to other catalysts.Its excellent performance can be attributed to the fact that CeO_(2)enhances the metal-support interaction,increases the surface basicity,promotes the adsorption and activation of CO_(2),and simultaneously inhibits the reverse water-gas shift side reaction.This study clarifies the structure-activity regulation mechanism of additive modification on Cu-ZnO catalysts,providing a theoretical basis and technical reference for the development of efficient catalysts for CO_(2)hydrogenation to methanol. 展开更多
关键词 carbon dioxide CATALYST additive modification HYDROGENATION METHANOL
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Selecting the molecular components of a pitch to produce a hard carbon anode with a high sodium storage capacity
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作者 Wang Peixiang Wang Bin +7 位作者 Li Yuqi Wang Wanli Sun Yi Song Longsen Liu Chenhao P.Iamprasertkun Hu Han Wu Mingbo 《新型炭材料(中英文)》 北大核心 2026年第1期142-156,共15页
Pitch is an excellent precursor for the production of hard carbon,with pre-oxidation crucial process in the fabrication.The structural changes in the different molecular components of pitch during thermochemical treat... Pitch is an excellent precursor for the production of hard carbon,with pre-oxidation crucial process in the fabrication.The structural changes in the different molecular components of pitch during thermochemical treatment are a key factor in determining the sodium-ion storage of pitchbased hard carbon anodes.We investigated the effects of the different molecular structures in the asphaltene precursor,including aromatic rings and aliphatic chains,on the sodiumion storage behavior of the resulting carbon.We found that polar oxygen functional groups limit the steric hindrance caused by the aromatic rings in pitch,and thus facilitate the introduction of cross-linked structures.During high-temperature carbonization,aromatic rings form a rigid carbon framework that prevents the rearrangement of ordered carbon layers,leading to a short-range disordered carbon structure and promotes the production of closed pores.For example,a material prepared from asphaltene,which contains a large number of oxygen-containing functional groups and macromolecular aromatic rings,using pre-oxidation at 300℃ and carbonization at 1200℃ had a reversible capacity of 316.7 mAh g^(−1) when used as the anode for sodium ion batteries.Our research provides a theoretical basis for the selection of raw materials for the development of high-quality pitch-based hard carbons. 展开更多
关键词 Energy storage ASPHALTENE PRE-OXIDATION Hard carbon Sodium-ion batteries
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Metal-free brush-like 3D carbon nitride delivers efficient red-light-driven photocatalysis
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作者 WANG Peng HAN Yanling +2 位作者 LIU Yuanyuan LU Pengfei LI Xiao 《燃料化学学报(中英文)》 北大核心 2026年第3期92-104,共13页
In this study,melamine and cyanuric acid were used as precursors to form supramolecular crystals via hydrogen-bond-assisted self-assembly followed by hydrothermal treatment.Subsequent high-temperature calcination yiel... In this study,melamine and cyanuric acid were used as precursors to form supramolecular crystals via hydrogen-bond-assisted self-assembly followed by hydrothermal treatment.Subsequent high-temperature calcination yielded a novel brush-like three-dimensional carbon nitride.The brush-like 3D architecture was found to expose more accessible active sites,markedly accelerate electron transfer,and suppress the recombination of photogenerated charge carriers.The resulting superoxide(O_(2)^(-·))and hydroxyl(·OH)radicals generated via electron reduction were identified as the key reactive species in the photocatalytic process.Moreover,the surface of the brush-like structure is enriched with nitrogen vacancies,which enhance the catalyst’s ability to harvest visible light.The photocatalytic performance of the brush-like CNS-650 catalyst was evaluated for rhodamine B(RhB)degradation.Under red-light irradiation(660 nm),its degradation rate was 7.4 times higher than that of bulk CN.This work provides valuable insights into the design and application of efficient metal-free 3D photocatalysts. 展开更多
关键词 PHOTOCATALYSIS carbon nitride three dimensional structure RED-LIGHT
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Engineered mesoporous carbon spheres with tailored pore structures for improved photothermal-chemotherapy
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作者 Liu Pengxiang Du Juan +1 位作者 Chen Aibing Hou Senlin 《新型炭材料(中英文)》 北大核心 2026年第1期222-233,共12页
Carbon-based materials have gained significant attention in anticancer treatment because of their exceptional biocompatibility,yet critical challenges persist in establishing definitive correlations between their poro... Carbon-based materials have gained significant attention in anticancer treatment because of their exceptional biocompatibility,yet critical challenges persist in establishing definitive correlations between their porous structures and functional performance.We report the use of a silica template to guide pore formation in the design of mesoporous carbon spheres(mC)with tailored pore structures for improved combined photothermal-chemotherapy.The mesopore size of mC has been adjusted by kinetic control of the resin polymerization and silica hydrolysis.Structural characterization showed that 4.4 nm mesopores enabled an exceptional gemcitabine loading of 228 mg g^(−1) and a sustained pH/thermal dual-responsive release with>70%drug release under near-infrared(NIR)irradiation.Finite element analysis demonstrated pore size-dependent heat transfer dynamics,with the improved mC achieving a superior photothermal conversion efficiency of 62%by a combination of N-doping and defect engineering.In vitro evaluations confirmed outstanding biocompatibility with>95%cell viability at 200μg mL^(−1) and potent tumor suppression in pancreatic and biliary cancer models with an~5%cell viability at 25μg mL^(−1) where combined therapy showed a 3.7-fold increased cytotoxicity over monotherapy.The improved structure of mC facilitated cascade therapeutic effects with enhanced tumor permeability derived from NIR-triggered hyperthermia and prolonged therapeutic exposure due to pH-responsive drug release.This pore engineering strategy establishes a structure-function process for next-generation theranostic platforms,addressing the critical limitations of conventional pancreatic and biliary cancer therapies through spatiotemporal control of multimodal treatment. 展开更多
关键词 Mesoporous carbon spheres Pore architectures PHOTOTHERMAL Drug delivery system CHEMOTHERAPY
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Mechanism of microstructural evolution in coke during the co-pyrolysis of coking coal with organic additives
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作者 ZHAO Xinni TIAN Lu +3 位作者 YU Peng XU Xiuli DOU Jinxiao YU Jianglong 《燃料化学学报(中英文)》 北大核心 2026年第2期153-165,共13页
To deepen understanding of the evolution of coal char microstructural properties of coal char during the co-pyrolysis of coking coal with additives,this study incorporated two typical additives,coal tar pitch(CTP)and ... To deepen understanding of the evolution of coal char microstructural properties of coal char during the co-pyrolysis of coking coal with additives,this study incorporated two typical additives,coal tar pitch(CTP)and waste plastic(HDPE),into a blended coal sample and carried out pyrolysis experiments.The pyrolysis process and the microstructure of char were systematically characterized using various analytical techniques,including thermogravimetric analysis(TGA),X-ray diffraction(XRD)and Raman spectroscopy.Data correlation analysis was performed to reveal the mechanism of carbon structural ordering evolution within the critical temperature range(350−600℃)from colloidal layer formation to semi-coke conversion in coking coal,and to elucidate the regulatory effects of different additives on coal pyrolysis pathways.The results indicate that HDPE releases free radicals during high-temperature pyrolysis,accelerating the pyrolysis reaction and increase the yield of volatile components.Conversely,CTP facilitates pyrolysis at low temperatures through its light components,thereby delaying high-temperature reactions due to the colloidal layer’s effect.XRD results indicate that during the process of pyrolysis,there is a progressive decrease in the interlayer spacing of aromatic layers(d002),while the aromatic ring stacking height(L_(c))and lateral size(L_(a))undergo significant of carbon skeleton ordering.Further comparative reveals that CTP partially suppresses structural ordering at low temperatures,whereas HDPE promotes the condensation and alignment of aromatic clusters via a free radical mechanism.Raman spectroscopy reveals a two-stage reorganization mechanism in the microstructure of the coal char:the decrease in the I_(D)/I_(G)ratio between 350 and 550℃is primarily attributed to the cleavage of aliphatic side chains and cross-linking bonds,leading to a reduction in defective structures;whereas the increase in ID/IG between 550 and 600℃is closely associated with enhanced condensation reactions of aromatic structures.Correlation analysis further demonstrates progressive graphitization during pyrolysis,with a significant positive correlation(R^(2)>0.85)observed between d002 and the full width at half maximum of the G-band(FWHM-G). 展开更多
关键词 coking coal organic additives CO-PYROLYSIS colloidal layer carbon structure
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Pressurized physically activated carbon used as a high-performance,low cost cathode material in lithium–sulfur batteries
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作者 Minghao Wang Zhangxiao +4 位作者 Gao Hongye Hata Satoshi Nakabayashi Koji Yoon Seongho Miyawaki Jin 《新型炭材料(中英文)》 北大核心 2026年第1期127-141,共15页
Lithium–sulfur(Li–S)batteries are promisingcandidates for next-generation energy storagegiven their high energy density and potential low cost.Chemically activated carbon(CAC)is often used fortheir cathodes,because ... Lithium–sulfur(Li–S)batteries are promisingcandidates for next-generation energy storagegiven their high energy density and potential low cost.Chemically activated carbon(CAC)is often used fortheir cathodes,because it has a high specific surfacearea for sulfur loading.We have developed a pressurizedphysical activation(PPA)method that producedan activated carbon(PPAC)with a high specific surfacearea comparable to that of CAC.The pore structure of PPAC could be changed and its use as a cathode material for Li–Sbatteries was investigated.Battery tests at different capacity rates(C-rates)showed that it had a much improved high-rate performancewith a discharge capacity of 900 mAh/(g of sulfur)at 1 C,in contrast to only 600 mAh/(g of sulfur)for CAC.Porestructure analyses showed that PPAC prepared at a high activation temperature(1000℃)had unusual channel-like mesoporesbetween the microdomains that are the basic structural units of artificial carbon materials.These are connected to microporesdeveloped in each microdomain,and deliver ions from the surroundings to the internal pores and vice versa.The well-developedmicropores and mesopores of PPAC respectively ensured the high adsorption of lithium polysulfides and a high rate ofion diffusion.Compared to CAC,PPAC is a high-performance,low-cost cathode material that is promising for use in futureLi–S batteries. 展开更多
关键词 Activated carbon Pressurized physical activation Mesoporous channel Lithium-sulfur batteries MICRODOMAIN
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Reconstruction of the surface of carbon paper by electrochemical exfoliation to produce a binder-free electrode for Zn-ion storage
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作者 Iqra Ashraf Awais Ahmad +4 位作者 Ibrahim A.Shaaban Tensangmu Lama Tamang Muhammad Sufyan Javed Fan Haosen Fang Li 《新型炭材料(中英文)》 北大核心 2026年第1期184-195,共12页
Zinc-ion supercapacitors(ZISCs)have received considerable interest for energy storage because of their low cost,high safety,and minimal environmental impact.However,they have a low energy density and poor cycling perf... Zinc-ion supercapacitors(ZISCs)have received considerable interest for energy storage because of their low cost,high safety,and minimal environmental impact.However,they have a low energy density and poor cycling performance.The design of a better cathode material is needed to overcome these limitations.A simple method was used to synthesize binder-free electrochemically exfoliated carbon paper(EECP)which modifies the surface of the paper by introducing oxygen functional groups and thus improves its pseudocapacitance.When used in a Zn-ion supercapacitor(ZISC),an EECPbased cathode provides a large surface area and quick charge transfer.As a result,the ZISC had remarkable charge storage properties and had a dominant capacitive-type charge storage mechanism with 78.8%retention of capacity at 10 mV/s of the total storage.Furthermore,at 1 A/g,the EECP electrode had a maximum capacitance of 252.5 F/g.The EECP electrode retained 81.7%of its capacitance after 10000 cycles,indicating its promise for use in the growing renewable energy sector.A ZISC was also constructed using EECP as the positive electrode and Zn as the negative electrode with a 1 mol L^(−1) ZnSO_(4) electrolyte.It had a capacitance of 186.22 F/g at 1 A/g and a 97.01%retention rate after 10000 cycles.It also had an excellent energy density of 46.6 Wh/kg at a power density of 500.4 W/kg.The material is therefore suitable for use in high-rate next-generation ZISCs. 展开更多
关键词 Carbon paper Electrochemical exfoliation Cathode material Zinc-ion supercapacitor
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Gen 2 Carbon公司与Americarb公司联手推进回收碳纤维清洁能源应用战略
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作者 燕春晖(摘译) 《石油炼制与化工》 北大核心 2026年第2期76-76,共1页
全球能源转型背景下,循环经济与净零排放目标推动清洁能源技术向低碳化、高效化升级。回收碳纤维(rCF)作为兼具环保属性与高性能特征的新型材料,在储能与能源转化领域的应用潜力备受关注。近日,英国Gen 2 Carbon公司与美国Americarb公... 全球能源转型背景下,循环经济与净零排放目标推动清洁能源技术向低碳化、高效化升级。回收碳纤维(rCF)作为兼具环保属性与高性能特征的新型材料,在储能与能源转化领域的应用潜力备受关注。近日,英国Gen 2 Carbon公司与美国Americarb公司宣布建立战略合作伙伴关系,共同开发rCF在清洁能源领域的创新应用,旨在将难以回收的碳纤维增强聚合物(CFRP)废料转化为高性能组件,服务于锂离子电池、燃料电池、电解槽等关键能源技术,助力全球循环经济与净零目标实现。 展开更多
关键词 清洁能源 能源转化 储能 Gen 2 Carbon公司
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Preparation and tailoring electromagnetic shielding and microwave absorbing performance of Fe_(3)O_(4)modified activated carbon foam based on mesophase coal pitch pyrolysis foaming
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作者 GE Yuanyuan WANG Yuzhe +4 位作者 XU Guozhong ZHU Yaming YUAN Xia SHI Guimei ZHONG Xiangyun 《燃料化学学报(中英文)》 北大核心 2026年第1期120-134,共15页
The development of materials with excellent microwave absorption(MWA)and electromagnetic interference(EMI)shielding performances has currently received attention.Herein,mesophase pitch-based carbon foam(MPCF)with 3D i... The development of materials with excellent microwave absorption(MWA)and electromagnetic interference(EMI)shielding performances has currently received attention.Herein,mesophase pitch-based carbon foam(MPCF)with 3D interconnected pore structure was prepared through the high pressure pyrolysis of mesophase coal tar pitch.It is found that the 3D interconnected cellular pores of MPCF facilitate multiple reflections of electromagnetic waves,which results in the minimum reflection loss(RLmin)value of MPCF reaches-37.84 dB with the effective absorption bandwidth(EAB)of 5.44 GHz at a thickness of 2.70 mm,and the total average electromagnetic shielding effectiveness(SE_(T))under 3.00 mm thickness achieves 26.52 dB in X-band.Subsequently,MPCF is activated by KOH to obtain activated carbon foam(A-MPCF).The average SE_(T)of A-MPCF achieves 103.00 dB for abundant nanopores on the pore cell walls,which leads to a transition from the multiple reflections of electromagnetic waves on the walls to diffuse reflection.Unfortunately,the reflection coefficient(R)of A-MPCF increases from 0.78 to 0.90.To reduce the R value,Fe_(3)O_(4)/A-MPCF was fabricated via the in situ growth of nano Fe_(3)O_(4)on A-MPCF.Consequently,the R value of Fe_(3)O_(4)/A-MPCF was reduced from 0.90 to 0.74,whereas the MWA performance was only slightly decreased.This work proposes a simple strategy for simultaneously adjusting MWA and EMI shielding performances of materials. 展开更多
关键词 carbon foam microwave absorption electromagnetic interference shielding mesophase pitch
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Health Phys.Abstracts,Volume 129,Number 4
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《辐射防护》 北大核心 2026年第1期87-91,共5页
Analysis Method of ^(131)I Activity in Carbon Cartridge and Internal Dose Assessment for Nuclear Medicine Workers.Shuo Wang1,Fei Tuo1,Jian-feng Zhang1,Xiao-liang Li1,Bao-lu Yang1,Qiang Zhou1,Ze-shu Li1,Shu-ying Kong1,... Analysis Method of ^(131)I Activity in Carbon Cartridge and Internal Dose Assessment for Nuclear Medicine Workers.Shuo Wang1,Fei Tuo1,Jian-feng Zhang1,Xiao-liang Li1,Bao-lu Yang1,Qiang Zhou1,Ze-shu Li1,Shu-ying Kong1,and Wei-hao Qin1(1.National Institute for Radiological Protection,Chinese Center for Disease Control and Prevention,Beijing,100088,China.) 展开更多
关键词 nuclear medicine workers health physics carbon cartridge internal dose assessment analysis method I activity
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Recent advances in carbon-based materials for CO_(2) capture and utilization
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作者 FU Lang YAO Dingding +2 位作者 HU Qiang YAN Shuiping YANG Haiping 《燃料化学学报(中英文)》 北大核心 2026年第3期15-32,共18页
CO_(2) capture and utilization(CCU)technologies have been recognized as crucial strategies for mitigating global warming,reducing carbon emission,and promoting resource circularity.As such,the design and development o... CO_(2) capture and utilization(CCU)technologies have been recognized as crucial strategies for mitigating global warming,reducing carbon emission,and promoting resource circularity.As such,the design and development of related materials have attracted considerable research attention.Carbon-based materials,characterized by tunable pore structures,abundant active sites,high specific surface area,and excellent chemical stability,demonstrate significant potential for applications in CO_(2) capture and utilization.This review systematically analyzes the adsorption behaviors and performance variations of typical carbon materials,including activated carbon,porous carbon,graphene,and carbon nanotubes during CO_(2) capture processes.Concerning CO_(2) utilization,emphasis is placed on recent advances in the catalytic applications of carbon-based materials in key reactions such as methanation,reverse water-gas shift,dry reforming of methane,and alcohol synthesis.Moreover,the benefits and drawbacks of carbon materials in terms of CO_(2) adsorption capacity,catalytic activity,and stability are thoroughly evaluated,and their potential applications in integrated CO_(2) capture and utilization technologies are discussed.Finally,key strategies for enhancing the performance of carbonaceous materials through structural modulation and surface modification are elucidated.This review aims to provide theoretical guidance for the future development and large-scale implementation of carbon-based materials in CCU technologies. 展开更多
关键词 CO_(2)capture and utilization carbon materials ADSORPTION CATALYSIS
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A carbon sponge supporting a MoS_(2)-Mo_(2)C heterostructure as the Li_(2)S host for high-performance lithium sulfur batteries
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作者 Ji Yuanxiao Zhang Weiye +7 位作者 Xue Jiarui Zhang Jiyuan Ge Yunping Zhu Nan Jiang Ruibin Lei Zhibin Liu Zonghuai Sun Jie 《新型炭材料(中英文)》 北大核心 2026年第1期109-126,共18页
Despite their high theoretical capacity and energy density,lithiumsulfur(Li–S)batteries still face challenges such as soluble lithium polysulfides(LiPSs)shuttling and sluggish redox kinetics.In this work,we used a no... Despite their high theoretical capacity and energy density,lithiumsulfur(Li–S)batteries still face challenges such as soluble lithium polysulfides(LiPSs)shuttling and sluggish redox kinetics.In this work,we used a novel MoS_(2)-Mo_(2)C heterostructure anchored on a carbon sponge(CS)as a Li_(2)S host to solve these problems.A simple hydrothermal process following carbothermal reduction was used to construct the MoS_(2)-Mo_(2)C heterostructure,enabling control of the phases and integration of MoS_(2) and Mo_(2)C.Structural characterization confirmed the coherent interface of the heterostructure with a precise orientation relationship between the two phases and their uniform distribution.An evaluation of the adsorption and catalytic performance of the material showed that it has an exceptional LiPSs adsorption capacity with faster conversion from Li_(2)S_(4) to Li_(2)S_(2).Density functional theory calculations further confirmed these results.As a result,the cathode had a high initial discharge capacity of 693 mAh g^(−1) at 0.2 C and achieved stable cycling at 2 C for 500 cycles with a low decay rate of 0.107%per cycle.The heterostructure design,coupled with the macroporous CS framework,effectively prevented the shuttling and increased sulfur utilization,offering a promising way to produce practical high-energydensity Li–S batteries. 展开更多
关键词 Lithium-sulfur batteries HETEROSTRUCTURE Carbon sponge Li_(2)S host Shuttle effect
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A review of the surface activation and modification of biochars
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作者 Zhang Yihan Chen Longyi 《新型炭材料(中英文)》 北大核心 2026年第1期67-90,共24页
Biomass-derived carbon materials are favored for their abundance and sustainability,and ease of preparation and modification.By surface activation and modification they can have a good electrical conductivity,excellen... Biomass-derived carbon materials are favored for their abundance and sustainability,and ease of preparation and modification.By surface activation and modification they can have a good electrical conductivity,excellent catalytic activity,a remarkable adsorption capacity,and different interfacial physicochemical functionalities.Surface-modified biochars have found wide applications in energy storage,environmental remediation,and catalysis.However,achieving precise and controllable modification of their active sites remains a challenge.Recent advances and future prospects for controlling their surface morphology,defect engineering,and surface coating strategies,with particular attention to their means of fabrication,are reviewed. 展开更多
关键词 Activation and modification Carbon material interface Surface functionalization Metal nanoparticle deposition Surface defect
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Research advances in the pyrolysis recycling of waste wind turbine blades
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作者 LI Zhehan WANG Xiaolu +6 位作者 LEI Fan HAO Jianxiu ZHOU Huacong BAN Yanpeng LI Na ZHI Keduan LIU Quansheng 《燃料化学学报(中英文)》 北大核心 2026年第3期33-57,共25页
The global energy landscape is undergoing a profound transformation,with wind energy,especially wind power,gaining increasing prominence due to its clean,renewable nature.However,as the installed capacity of wind powe... The global energy landscape is undergoing a profound transformation,with wind energy,especially wind power,gaining increasing prominence due to its clean,renewable nature.However,as the installed capacity of wind power continues to expand,the disposal of waste wind turbine blades(WWTB)has emerged as a significant challenge.These blades are predominantly composed of epoxy resin(EP)polymers,carbon fibers(CFs),and glass fibers(GFs).Improper disposal not only exacerbates environmental concerns but also leads to the loss of valuable resources,particularly carbon-based materials.Pyrolysis technology,a versatile and environmentally sustainable method for resource recovery,has garnered considerable attention in the context of WWTB disposal.This work presents a comprehensive review of the pyrolytic recycling of WWTB,focusing on the principles and classifications of pyrolysis technology,key factors influencing the pyrolysis process,as well as the pyrolysis methods,equipment,products,and their applications.Through an in-depth analysis of the current research on the pyrolytic recycling of WWTB,this review identifies critical unresolved issues in the field and provides a forward-looking perspective on emerging research trends. 展开更多
关键词 waste wind turbine blades epoxy resin polymers carbon fibers glass fibers pyrolysis recycling resource recovery
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Mechanism of enhancing NH_(3)-SCR performance of Mn-Ce/AC catalyst by the structure regulation of activated carbon with calcite in coal
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作者 NIU Jian LI Yuhang +4 位作者 BAI Baofeng WEN Chaolu LI Linbo ZHANG Huirong GUO Shaoqing 《燃料化学学报(中英文)》 北大核心 2026年第1期69-79,共11页
To elucidate the effect of calcite-regulated activated carbon(AC)structure on low-temperature denitrification performance of SCR catalysts,this work prepared a series of Mn-Ce/De-AC-xCaCO_(3)(x is the calcite content ... To elucidate the effect of calcite-regulated activated carbon(AC)structure on low-temperature denitrification performance of SCR catalysts,this work prepared a series of Mn-Ce/De-AC-xCaCO_(3)(x is the calcite content in coal)catalysts were prepared by the incipient wetness impregnation method,followed by acid washing to remove calcium-containing minerals.Comprehensive characterization and low-temperature denitrification tests revealed that calcite-induced structural modulation of coal-derived AC significantly enhances catalytic activity.Specifically,NO conversion increased from 88.3%of Mn-Ce/De-AC to 91.7%of Mn-Ce/De-AC-1CaCO_(3)(210℃).The improved SCR denitrification activity results from the enhancement of physicochemical properties including higher Mn^(4+)content and Ce^(4+)/Ce^(3+)ratio,an abundance of chemisorbed oxygen and acidic sites,which could strengthen the SCR reaction pathways(richer NH_(3)activated species and bidentate nitrate active species).Therefore,NO removal is enhanced. 展开更多
关键词 CALCITE activated carbon structure Mn-Ce/AC catalyst NH_(3)-SCR performance
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A review of covalent organic framework materials for CO_(2) adsorption
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作者 Zeng Fanqiang Ji Changchun +1 位作者 Wang Yudong Li Yousheng 《新型炭材料(中英文)》 北大核心 2026年第1期44-66,共23页
The capture of atmospheric carbon dioxide by adsorbents is an important strategy to deal with the greenhouse effect.Compared with traditional CO_(2) adsorption materials like activated carbon,silica gel,and zeolite mo... The capture of atmospheric carbon dioxide by adsorbents is an important strategy to deal with the greenhouse effect.Compared with traditional CO_(2) adsorption materials like activated carbon,silica gel,and zeolite molecular sieves,covalent organic frameworks(COFs)have excellent thermal and chemical stabilities and can be produced in many different forms.Using their different possible construction units,ordered structures for specific applications can be produced,giving them broad prospects in fields such as gas storage.This review analyzes the different types of COFs that have been synthesized and their different methods of CO_(2) capture.It then discusses different ways to increase CO_(2) adsorption by changing the internal structure of COFs and modifying their surfaces.The limitations of COF-derived carbon materials in CO_(2) capture are reviewed and,finally,the key role of machine learning and computational simulation in improving CO_(2) adsorption is mentioned,and the current status and future possible uses of COFs are summarized. 展开更多
关键词 CO_(2)capture Modification of COFs COF-derived carbon materials Machine learning Computational simulation
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