Synthesis of Cu2S/K4Nb6O17 composite and its photocatalytic activity for hydrogen production

被引：34

作者：

Liang, Yinghua ^{[1
]}

Shao, Meiyi ^{[1
]}

Liu, Li ^{[1
]}

McEvoy, Joanne Gamage ^{[2
]}

Hu, Jinshan ^{[1
]}

Cui, Wenquan ^{[1
]}

机构：

[1] Hebei United Univ, Coll Chem Engn, Tangshan 063009, Peoples R China

[2] Univ Ottawa, Dept Chem & Biol Engn, Ottawa, ON K1N 6N5, Canada

来源：

CATALYSIS COMMUNICATIONS | 2014年 / 46卷

关键词：

Photocatalysis; Composites; Cu2S/K4Nb6O17; Polyol; Hydrogen evolution; INTERCALATED K4NB6O17; DEGRADATION; WATER; TIO2; NANOCRYSTALS; MORPHOLOGY;

D O I：

10.1016/j.catcom.2013.12.004

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：

Cu2S-loaded K4Nb6O17 photocatalysts (designated Cu2S/K4Nb6O17) were prepared via a polyol method. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), X-ray fluorescence spectrometry (XRF), N-2 sorption, and ultraviolet-visible diffuse reflectance spectra (UV-Vis DRS). The Cu2S particles were well-dispersed on the surface of K4Nb6O17 and possessed a uniform size distribution around 10 nm. Cu2S (20 wt.%)/K4Nb6O17 possessed the highest photocatalytic activity for hydrogen evolution, producing 2.45 mmol g(-1) h(-1) under visible light irradiation. The mechanism of separation of the photogenerated electrons and holes was discussed. (C) 2013 Elsevier B.V. All tights reserved.

引用

页码：128 / 132

页数：5

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