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Heterostructuring noble-metal-free 1T'phase MoS_(2) with g-C_(3)N_(4) hollow nanocages to improve the photocatalytic H2 evolution activity

查看全文 作　　者：Yanjun [1]Xue;Yinghong [1]Ji;Xinyu [1]Wang;Huanli [2]Wang;Xiaobo [3]Chen;Xiaoli [4]Zhang;Jian [1]Tian 高影响力作者 机构地区：[1]School of Materials Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,China;[2]School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266033,China;[3]Department of Chemistry,University of Missouri,Kansas City,MO 64110,USA;[4]School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China高影响力机构 出　　处：《Green Energy & Environment》索引2023年第8卷第3期,共10页高影响力期刊 基　　金：funding from the National Natural Science Foundation of China (No.51872173);Taishan Scholar Foundation of Shandong Province (No.tsqn201812068);Youth Innovation Technology Project of Higher School in Shandong Province (No.2019KJA013);Science and Technology Special Project of Qingdao City (No.20-3-4-3-nsh);the Opening Fund of State Key Laboratory of Heavy Oil Processing (No.SKLOP202002006)。 摘　　要：In this work,we report the preparation of 1T'-MoS_(2)/g-C_(3)N_(4) nanocage(NC)heterostructure by loading 2D semi-metal noble-metal-free 1T'-MoS_(2) on the g-C_(3)N_(4) nanocages(NCs).DFT calculation and experimental data have shown that the 1T'-MoS_(2)/g-C_(3)N_(4) NC heterostructure has a stronger light absorption capacity and larger specific surface area than pure g-C_(3)N_(4) NCs and g-C_(3)N_(4) nanosheets(NSs),and the presence of the co-catalysts 1T'-MoS_(2) can effectively inhibit the photoinduced carrier recombination.As a result,the 1T'-MoS_(2)/g-C_(3)N_(4) NC heterostructure with an optimum 1T'-MoS_(2) loading of 9 wt%displays a hydrogen evolution rate of 1949 mmol h^(-1) g^(-1),162.4,1.2,1.5,1.6 and 1.2 times than pure g-C_(3)N_(4) NCs(12 mmol h^(-1) g^(-1)),Pt/g-C_(3)N_(4) NCs(1615 mmol h^(-1) g^(-1))and Pt/g-C_(3)N_(4) nanosheets(NSs,1297 mmol h^(-1) g^(-1)),1T'-MoS_(2)/g-C_(3)N_(4) nanosheets(1216 mmol h^(-1) g^(-1))and 2H-MoS_(2)/g-C_(3)N_(4) nanocages(1573 mmol h^(-1) g^(-1)),respectively,and exhibits excellent cycle stability.Therefore,1T'-MoS_(2)/g-C_(3)N_(4) NC heterostructure is a suitable photocatalyst for green H_(2) production. 关 键 词：g-C_(3)N_(4) 1T'phase MoS_(2) Nanocage structure Photocatalytic hydrogen production Co-catalysts
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