Pt-Decorated g-C3N4/TiO2 Nanotube Arrays with Enhanced Visible-Light Photocatalytic Activity for H2 Evolution

被引：38

作者：

Gao, Zhi-Da ^{[1
]}

Qu, Yong-Fang ^{[1
]}

Zhou, Xuemei ^{[2
]}

Wang, Lei ^{[2
]}

Song, Yan-Yan ^{[1
]}

Schmuki, Patrik ^{[2
,3
]}

机构：

[1] Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China

[2] Univ Erlangen Nurnberg, Dept Mat Sci & Engn, WW4 LKO, Martensstr 7, D-91058 Erlangen, Germany

[3] King Abdulaziz Univ, Dept Chem, Fac Sci, Jeddah 21569, Saudi Arabia

来源：

CHEMISTRYOPEN | 2016年 / 5卷 / 03期

基金：

中国国家自然科学基金; 欧洲研究理事会;

关键词：

graphitic carbon nitride; hydrogen evolution; photocatalysis; TiO2; nanotubes; visible light; MESOPOROUS CARBON NITRIDES; HYDROGEN EVOLUTION; TIO2; NANOTUBES; GRAPHENE; NANOPARTICLES; SENSITIZATION; DEGRADATION; FABRICATION; MORPHOLOGY; HYBRID;

D O I：

10.1002/open.201500219

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Aligned TiO2 nanotube layers (TiNTs) grown by self-organizing anodization of a Ti-substrate in a fluoride-based electrolyte were decorated with graphitic-phase C3N4 (g-C3N4) via a facile chemical vapor deposition approach. In comparison with classical TiO2 nanotubes (anatase), the g-C3N4/TiNTs show an onset of the photocurrent at 2.4eV (vs. 3.2eV for anatase) with a considerably high photocurrent magnitude in the visible range. After further decoration with Pt nanoparticles, we obtained a visible-light responsive platform that showed, compared with g-C3N4-free TiNTs, a strong enhancement for photoelectrochemical and bias-free H-2 evolution (15.62 mu Lh(-1) cm(-2)), which was almost a 98-fold increase in the H-2 production rate of TiNTs (0.16 mu Lh(-1) cm(-2)). In a wider context, the g-C3N4-combined 3D nanoporous/nanotubular structure thus provides a platform with significant visible-light response in photocatalytic applications.

引用

页码：197 / 200

页数：4

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