Photocatalytic hydrogen production over carbon nitride loaded with WS2 as cocatalyst under visible light

被引：176

作者：

Hou, Yidong ^{[1
]}

Zhu, Yongsheng ^{[1
]}

Xu, Yan ^{[1
]}

Wang, Xinchen ^{[1
]}

机构：

[1] Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Res Inst Photocatalysis, Fuzhou 350002, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2014年 / 156卷

关键词：

Carbon nitride; WS2; Cocatalyst; Photocatalytic H-2 evolution; H-2; EVOLUTION; TUNGSTEN CARBIDE; WATER; CDS; CATALYSTS; MOS2;

D O I：

10.1016/j.apcatb.2014.03.002

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：

Mesoporous graphitic$ carbon nitride (mpg-CN) was loaded with WS2 via an impregnation sulfidation approach. The resultant surface heterojunctions between WS2 and mpg-CN were evidently confirmed with transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Photocatalytic H-2 production on WS2/mpg-CN under visible light (lambda > 420 nm) shows that WS2 plays an important role in catalyzing H-2 production. The rate of hydrogen evolution reaches an optimum when the loading amount of WS2 is about 0.3 at.%. Combined with the physicochemical and electrocatalytic properties of WS2/mpg-CN, it can be concluded that the enhanced photocatalytic H-2 production activity on WS2/mpg-CN is mainly attributed to the thin layered junctions formed between WS2 and mpg-CN and the great performance of WS2 as a cocatalyst in H-2 evolution reaction. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：122 / 127

页数：6

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