Edge reconstruction of layer-dependentβ-In2Se3/MoS2 vertical heterostructures for accelerated hydrogen evolution
作者机构：Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of EducationSchool of Chemical EngineeringZhengzhou UniversityZhengzhou 450001China Institute of Chemical Biology and Nanomedicine(ICBN)State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China College of Life and Environmental ScienceHunan University of Arts and ScienceChangde 415000China School of Physics and OptoelectronicsXiangtan UniversityXiangtan 411105China Institute of New Energy Material ChemistrySchool of Materials Science and EngineeringNankai UniversityTianjin 300350China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2023年第16卷第1期
页 面：1670-1678页
核心收录：
学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学]
基 金：The work was supported by the National Natural Science Foundation of China(Nos.22175060 and 21975067) Natural Science Foundation of Hunan Province of China(Nos.2021JJ10014 and 2021JJ30092) X.X.X thanks to the National Science Foundation of China(No.12104385) The computational resources were provided by the supercomputer TianHe in Changsha,China
主 题：In2Se3/MoS2 heterostructure edge reconstruction layer dependent hydrogen evolution reaction microreactor
摘 要：The layer-dependent properties are still unclarified in two-dimensional(2D)vertical *** this study,we layer-bylayer deposited semimetalβ-In2Se3 on monolayer MoS2 to form verticalβ-In2Se3/MoS2 heterostructures by chemical vapor *** defect-mediated nucleation mechanism inducesβ-In2Se3 nanosheets to grow on monolayer MoS2,and the layer number of stackedβ-In2Se3 can be precisely regulated from 1 layer(L)to 13 L by prolonging the growth ***β-In2Se3/MoS2 heterostructures reveal tunable type-Ⅱband alignment arrangement by altering the layer number ofβ-In2Se3,which optimizes the internal electron ***,the edge atomic structure ofβ-In2Se3 stacking on monolayer MoS2 shows the reconstruction derived from large lattice mismatch(~29%),and the presence ofβ-In2Se3 also further increases the electrical conductivity ofβ-In2Se3/MoS2 *** to abundant layer-dependent edge active sites,edge reconstruction,improved hydrophilicity,and high electrical conductivity ofβ-In2Se3/MoS2 heterostructures,the edge ofβ-In2Se3/MoS2 heterostructures exhibits excellent electrocatalytic hydrogen evolution *** onset potential and smaller Tafel slope can be observed at the edge of monolayer MoS2 coupled with 13-Lβ-***,the outstanding conductive layers coupled with edge reconstruction in 2D vertical heterostructures play decisive roles in the optimization of electron energy levels and improvement of layer-dependent catalytic performance.
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