In-situ synthesis of Ni2P co-catalyst decorated Zn0.5Cd0.5S nanorods for high quantum-yield photocatalytic hydrogen production under visible light irradiation

被引：178

作者：

Dai, Dongsheng ^{[1
,2
]}

Wang, Lu ^{[1
]}

Xiao, Nan ^{[2
]}

Li, Songsong ^{[2
]}

Xu, Hao ^{[2
]}

Liu, Shuang ^{[2
]}

Xu, Boran ^{[2
]}

Lv, Da ^{[2
]}

Gao, Yangqing ^{[2
]}

Song, Weiyu ^{[1
]}

Ge, Lei ^{[1
,2
]}

Liu, Jian ^{[1
]}

机构：

[1] China Univ Petr, Coll Sci, State Key Lab Heavy Oil Proc, 18 Fuxue Rd, Beijing 102249, Peoples R China

[2] China Univ Petr, Coll Sci, Dept Mat Sci & Engn, 18 Fuxue Rd, Beijing 102249, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2018年 / 233卷

基金：

美国国家科学基金会;

关键词：

Photocatalysis; Ni2P; Hydrogen evolution; Zn0.5Cd0.5S; CHARGE SEPARATION; CDS NANOSHEETS; H-2; EVOLUTION; WATER; ENHANCEMENT; GENERATION; CATALYSTS; OXYGEN; SHELL; COP;

D O I：

10.1016/j.apeatb.2018.04.013

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：

Efficient noble-metal-free semiconductor composite photocatalysts are highly desirable for visible light driven water splitting. In this study, Ni2P was successfully decorated on Zn0.5Cd0.5S as a highly efficient co-catalyst via a hydrothermal method. The chemical as well as photophysical properties of the as-obtained Ni2P/Zn0.5Cd0.5S samples were characterized by X-ray diffractometry (XRD), Transmission electron microscope (TEM), UV-vis diffusion reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL) and time-resolved fluorescence. The Ni2P/Zn0.5Cd0.5S composite sample with 4% molar content of Ni2P showed the highest photocatalytic H-2 evolution activity with a corresponding H-2 evolution rate of 1173 mu mol h(-1), which was about 13 times higher than that of pure Zn0.5Cd0.5S sample under visible light irradiation. The photo catalytic activity of the Ni2P/Zn0.5Cd0.5S composite sample was stable even after 4 cycling photocatalytic experiments. A possible mechanism on the photocatalytic enhancement of the Ni2P/Zn0.5Cd0.5S composite sample was systematically investigated, which can provide a novel concept for the synthesis of other desirable semiconductor materials with high photocatalytic performance.

引用

页码：194 / 201

页数：8

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