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Theoretical progress on direct Z-scheme photocatalysis of two-dimensional heterostructures

Frontiers of physics 2021年第4期16卷 125-133页

作者： Zhaobo Zhou Shijun Yuan Jinlan Wang School of Physics Southeast UniversityNanjing 211189China

two-dimensional(2D)materials,due to its excellent mechanical,unique electrical and optical properties,have become hot materials in the field of ***,2D heterostructures can well inhibit the recombination of photogenerated electrons and holes in photocatalysis because of its special energy band structures and carrier transport characteristics,which are conducive to enhancing photoenergy conversion capacity and improving oxidation and reduction ability,so as to purify pollutants and store *** this minireview,we summarize recent theoretical progress in direct Z-scheme photocatalysis of 2D heterostructures,focusing on physical mechanism and improving catalytic *** challenges and prospects for 2D direct Z-scheme photocatalysts are discussed as well.

关键词： two-dimensional heterostructures direct Z-scheme photocatalyst density functional theory

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Atomic-scale characterization of two-dimensional magnets and their heterostructures

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ChemPhysMater 2023年第4期2卷 282-294页

作者： Yuli Huang Mingyue Sun Yihe Wang Andrew Thye Shen Wee Wei Chen Joint School of National University of Singapore and Tianjin University International Joint Institute of Tianjin UniversityFuzhou 350207China Department of Physics National University of SingaporeSingapore 117551Singapore Department of Chemistry National University of SingaporeSingapore 117542Singapore

The realization of long-range magnetic ordering in two-dimensional(2D)van der Waals systems significantly expands the scope of the 2D family as well as their possible spin-related phenomena and device *** atomically thin nature of 2D materials makes their magnetically ordered states sensitive to local environments,and this necessitates advanced characterization at the atomic ***,we briefly review several representative 2D magnetic systems,namely,iron chalcogenides,chromium chalcogenides,chromium trihalides,and their *** powerful scanning-probe microscopy,atomically resolved characterization of their crystalline configurations,electronic structures,and magnetization distributions has been achieved,and novel phenomena such as giant tunneling magnetoresistance and topological superconductivity have been ***,we discuss the challenges and new perspectives in this flourishing field.

关键词： two-dimensional magnets two-dimensional heterostructures Scanning probe microscopy Spin-polarized configuration

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two-dimensional SnO_2/graphene heterostructures for highly reversible electrochemical lithium storage

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Science China Materials 2018年第12期61卷 1527-1535页

作者： Youqi Zhu Tai Cao Zhi Li Chen Chen Qing Peng Dingsheng Wang Yadong Li Department of Chemistry Tsinghua University

The ever-growing market demands for lithium ion batteries have stimulated numerous research efforts aiming at the exploration of novel electrode materials with higher capacity and long-term cycling ***-dimensional (2D)nanomaterials and their heterostructures are an intense area of study and promise great potential in electrochemical lithium storage owing to their unique properties that result from structural planar *** we report a microwave chemistry strategy to integrate ultrathin SnO2 nanosheets into graphene layer to construct surface-to-surface 2D heterostructured architectures,which can provide unique structural planar confinement for highly reversible electrochemical lithium *** as-synthesized 2D SnO2/graphene heterostructures can exhibit high reversible capacity of 688.5mAh g^-1 over 500cycles with excellent long-term cycling stability and good rate capability when used as anode materials for lithium ion *** present work definitely reveals the advantages of 2D heterostructures featured with a surface-to-surface stack between two different nanosheets in energy storage and conversion devices.

关键词： two-dimensional heterostructures graphene tin oxide microwave chemistry,electrochemical lithinm storage

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