In situ construction of NiSe/Mn0.5Cd0.5S composites for enhanced photocatalytic hydrogen production under visible light

被引：179

作者：

Jiang, Xinwei ^{[1
]}

Gong, Haisheng ^{[1
]}

Liu, Qiuwen ^{[1
]}

Song, Mingxia ^{[2
]}

Huang, Caijin ^{[1
]}

机构：

[1] Fuzhou Univ, Coll Chem, State KeyLab Photocatalysis Energy & Environm, Fuzhou 350116, Peoples R China

[2] Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Atmospher Environm & Equip, Sch Chem & Mat Sci, Nanjing 210044, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2020年 / 268卷

基金：

中国国家自然科学基金;

关键词：

Noble metal-free; NiSe/Mn0.5Cd0.5S; Photocatalytic hydrogen production; MN0.5CD0.5S SOLID-SOLUTION; MN-CD-S; H-2; EVOLUTION; DRIVEN PHOTOCATALYST; HYDROTHERMAL SYNTHESIS; NICKEL FOAM; EFFICIENT; WATER; TIO2; SEMICONDUCTOR;

D O I：

10.1016/j.apcatb.2019.118439

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

MnxCd1-xS solid solution is an emerging semiconductor for photocatalytic water splitting with a tunable bandgap. However, it still leaves much room to improve the photocatalytic activity. Herein, we modified Mn-0.5Cd0.5S with noble metal-free NiSe by an in-situ hydrothermal synthesis. The as-obtained NiSe/Mn-0.5Cd0.5S nanocomposites exhibited highly efficient photocatalytic H-2 production under visible light and the highest hydrogen generation rate reaches 28.08 mmol/h/g, which is higher than that of Mn-0.5Cd0.5S (13.71 mmol/h/g) and 1 wt% Pt/Mn-0.5Cd0.5S (24.22 mmol/h/g). Through the detailed analyses of UV-vis DRS, photoluminescence (PL) spectra, time-resolved photoluminescence (TRPL) and photoelectrochemical tests, we found the wellmatched structure between NiSe and Mn-0.5Cd0.5S, which facilitates the charge transfer and prolongs the lifetime of photo-induced electrons, and thus improves photocatalytic activity.

引用

页数：10

共 56 条

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