Interface engineering can improve the charge separation efficiency and inhibit photocorrosion is an emerging direction of developing more efficient and cost-effective photocatalytic systems.Herein,we report the sulfur...Interface engineering can improve the charge separation efficiency and inhibit photocorrosion is an emerging direction of developing more efficient and cost-effective photocatalytic systems.Herein,we report the sulfur-confined intimate Cd S intergrown Cd(Cd S/Cd)Ohmic junction(peanut-chocolate-ball like)for high-efficient H2production with superior anti-photocorrosion ability,which was fabricated from in-situ photoreduction of CdS intergrown Cd2SO4(OH)2(CdS/Cd2SO4(OH)2)prepared through a facile space-controlled-solvothermal method.The ratios of CdS/Cd can be effectively controlled by tunning that of CdS/Cd2SO4(OH)2which were prepared by adjusting the volume of reaction liquid and the remaining space of the reactor.Experiments investigations and density functional theory(DFT)calculations reveal that the Cd S intergrown Cd Ohmic junction interfaces(with appropriate content Cd intergrown on Cd S(19.54 wt%))are beneficial in facilitating the transfer of photogenerated electrons by constructing an interfacial electric field and forming sulfur-confined structures for preventing the positive holes(h+)oxidize the Cd S.This contributes to a high photocatalytic H2production activity of 95.40μmol h-1(about 32.3 times higher than bare Cd S)and possesses outstanding photocatalytic stability over 205 h,much longer than most Cd S-based photocatalysts previously reported.The interface engineering design inspired by the structure of peanut-chocolate-ball can greatly promote the future development of catalytic systems for wider application.展开更多
The prototype material,Li_(1.23)Ru_(0.41)Ni_(0.36)O_(2),is proposed to gain the deep and comprehensive understanding of chemical and structural changes of the novel layered/rocksalt intergrown cathodes.Synchrotronbase...The prototype material,Li_(1.23)Ru_(0.41)Ni_(0.36)O_(2),is proposed to gain the deep and comprehensive understanding of chemical and structural changes of the novel layered/rocksalt intergrown cathodes.Synchrotronbased X-ray absorption spectra and resonant inelastic X-ray scattering reveal that both cationic and anionic redox evolves in the charge compensation process of the intergrown material,while synchrotronbased extended X-ray fine structure spectra and in situ X-ray diffraction measurements demonstrates that the intergrown material undergoes minimal local-and long-range structural variations at deep de/lithiation.This work highlights the great potential of the intergrown structure to inspire the design of advanced cathode materials for lithium-ion batteries.展开更多
Hierarchical porous zeolites attract great at- tention because of their porosity on different scales to improve molecular diffusion. Here, we report mesoporous Faujasite （FAU） zeolite nanosheets with intergrown stru...Hierarchical porous zeolites attract great at- tention because of their porosity on different scales to improve molecular diffusion. Here, we report mesoporous Faujasite （FAU） zeolite nanosheets with intergrown structure synthe- sized in an additive-free system. The sample was composed of uniform nanosheets with a slice thickness of -50 nm, which held a honeycomb-like structure with abundant mesopores. This material exhibits both microporous and mesoporous structure： the intrinsic micropores with a diameter about 0.74 nm in the zeolite framework and the mesopores with a diameter about 10 nm existing within the zeolite nanosheets. The Si/AI ratios can be adjusted from I.I to 1.9 （zeolites X or Y）. In addition, this simple and environment-friendly method may provide inspiration to the synthesis of other hierarchical zeolites.展开更多
基金supported by the National Natural Science Foundation of China(22162008,22162007)the Science and Technology Supporting Project of Guizhou Province([2022]208,[2021]480)the Basic Research Program of Science&Technology Department of Guizhou Province([2020]1Y055)。
文摘Interface engineering can improve the charge separation efficiency and inhibit photocorrosion is an emerging direction of developing more efficient and cost-effective photocatalytic systems.Herein,we report the sulfur-confined intimate Cd S intergrown Cd(Cd S/Cd)Ohmic junction(peanut-chocolate-ball like)for high-efficient H2production with superior anti-photocorrosion ability,which was fabricated from in-situ photoreduction of CdS intergrown Cd2SO4(OH)2(CdS/Cd2SO4(OH)2)prepared through a facile space-controlled-solvothermal method.The ratios of CdS/Cd can be effectively controlled by tunning that of CdS/Cd2SO4(OH)2which were prepared by adjusting the volume of reaction liquid and the remaining space of the reactor.Experiments investigations and density functional theory(DFT)calculations reveal that the Cd S intergrown Cd Ohmic junction interfaces(with appropriate content Cd intergrown on Cd S(19.54 wt%))are beneficial in facilitating the transfer of photogenerated electrons by constructing an interfacial electric field and forming sulfur-confined structures for preventing the positive holes(h+)oxidize the Cd S.This contributes to a high photocatalytic H2production activity of 95.40μmol h-1(about 32.3 times higher than bare Cd S)and possesses outstanding photocatalytic stability over 205 h,much longer than most Cd S-based photocatalysts previously reported.The interface engineering design inspired by the structure of peanut-chocolate-ball can greatly promote the future development of catalytic systems for wider application.
基金sponsored by National Natural Science Foundation of China(No.22109010)National Key R&D Program of China(No.2021YFC2902905)+4 种基金Beijing Nova Program,Chongqing Outstanding Youth Fund(No.2022NSCQ-JQX3895)Chongqing Talents Plan for Young Talents(No.CQYC202005032)The Key Project of Chongqing Technology Innovation and Application Development(No.2022TIAD-DEX0024)the support from Beijing Institute of Technology Research Fund Program for Young Scholarsthe support by the Shanghai Sailing Program(No.2023×0308–103–01)。
文摘The prototype material,Li_(1.23)Ru_(0.41)Ni_(0.36)O_(2),is proposed to gain the deep and comprehensive understanding of chemical and structural changes of the novel layered/rocksalt intergrown cathodes.Synchrotronbased X-ray absorption spectra and resonant inelastic X-ray scattering reveal that both cationic and anionic redox evolves in the charge compensation process of the intergrown material,while synchrotronbased extended X-ray fine structure spectra and in situ X-ray diffraction measurements demonstrates that the intergrown material undergoes minimal local-and long-range structural variations at deep de/lithiation.This work highlights the great potential of the intergrown structure to inspire the design of advanced cathode materials for lithium-ion batteries.
基金supported by the National Natural Science Foundation of China(21533002 and 21571128)the National Excellent Doctoral Dissertation of China(201454)
文摘Hierarchical porous zeolites attract great at- tention because of their porosity on different scales to improve molecular diffusion. Here, we report mesoporous Faujasite （FAU） zeolite nanosheets with intergrown structure synthe- sized in an additive-free system. The sample was composed of uniform nanosheets with a slice thickness of -50 nm, which held a honeycomb-like structure with abundant mesopores. This material exhibits both microporous and mesoporous structure： the intrinsic micropores with a diameter about 0.74 nm in the zeolite framework and the mesopores with a diameter about 10 nm existing within the zeolite nanosheets. The Si/AI ratios can be adjusted from I.I to 1.9 （zeolites X or Y）. In addition, this simple and environment-friendly method may provide inspiration to the synthesis of other hierarchical zeolites.
