Facile synthesis of Co(OH)2 modified TiO2 nanocomposites with enhanced photocatalytic H2 evolution activity

被引：32

作者：

Dang, Haifeng ^{[1
,2
]}

Dong, Xinfa ^{[1
]}

Dong, Yingchao ^{[3
]}

Fan, Hongbo ^{[2
]}

Qiu, Yongfu ^{[2
]}

机构：

[1] S China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Guangdong, Peoples R China

[2] Dongguan Univ Technol, Coll Chem & Environm Engn, Dongguan 523808, Peoples R China

[3] Chinese Acad Sci, Inst Urban Environm, Xiamen 361021, Peoples R China

来源：

MATERIALS LETTERS | 2015年 / 138卷

基金：

中国国家自然科学基金;

关键词：

TiO2; Co(OH)(2); Photocatalytic; Nanocomposites; Semiconductors; HYDROGEN-PRODUCTION; WATER; GENERATION; COCATALYST;

D O I：

10.1016/j.matlet.2014.09.118

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Co(OH)(2) modified TiO2 (Co(OH)(2)/TiO2) photocatalysts were fabricated by a simple precipitation method and characterized by XRD, TEM, N-2-physisorption, UV-vis DRS and PL. The photocatalytic H-2 evolution performance on TiO2 was significantly enhanced by loading Co(OH)(2). The optimum Co(OH)(2) loading content was found to be 0.25 mol%, yielding a H-2-evolution rate of 1946 mu mol h(-1) g(-1), being about 23 times of that on pure TiO2. This enhancement of photocatalytic H-2 evolution was attributed to the Co(OH)(2) clusters deposited on TiO2 surface, which can act as electron traps and thus facilitate the charge carrier separation. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：56 / 59

页数：4

共 17 条

[1] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].

Asahi, R ;

Morikawa, T ;

Ohwaki, T ;

Aoki, K ;

Taga, Y .

SCIENCE, 2001, 293 (5528) :269-271

[2] Semiconductor-based Photocatalytic Hydrogen Generation [J].

Chen, Xiaobo ;

Shen, Shaohua ;

Guo, Liejin ;

Mao, Samuel S. .

CHEMICAL REVIEWS, 2010, 110 (11) :6503-6570

[3] Non-noble metal Cu-loaded TiO2 for enhanced photocatalytic H2 production [J].

Foo, Wei Jian ;

Zhang, Chun ;

Ho, Ghim Wei .

NANOSCALE, 2013, 5 (02) :759-764

[4] 5.1% Apparent quantum efficiency for stable hydrogen generation over eosin-sensitized CuO/TiO2 photocatalyst under visible light irradiation [J].

Jin, Zhiliang ;

Zhang, Xiaojie ;

Li, Yuexiang ;

Li, Shuben ;

Lu, Gongxuan .

CATALYSIS COMMUNICATIONS, 2007, 8 (08) :1267-1273

[5] Heterogeneous photocatalyst materials for water splitting [J].

Kudo, Akihiko ;

Miseki, Yugo .

CHEMICAL SOCIETY REVIEWS, 2009, 38 (01) :253-278

[6] A review and recent developments in photocatalytic water-splitting using TiO2 for hydrogen production [J].

Ni, Meng ;

Leung, Michael K. H. ;

Leung, Dennis Y. C. ;

Sumathy, K. .

RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2007, 11 (03) :401-425

[7] Enhanced photocatalytic hydrogen evolution over Pt supported on mesoporous TiO2 prepared by single-step sol-gel process with surfactant template [J].

Sreethawong, T ;

Yoshikawa, S .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2006, 31 (06) :786-796

[8] Inorganic Photocatalysts for Overall Water Splitting [J].

Xing, Jun ;

Fang, Wen Qi ;

Zhao, Hui Jun ;

Yang, Hua Gui .

CHEMISTRY-AN ASIAN JOURNAL, 2012, 7 (04) :642-657

[9] Highly efficient CuO incorporated TiO2 nanotube photocatalyst for hydrogen production from water [J].

Xu, Shiping ;

Du, Alan Jianhong ;

Liu, Jincheng ;

Ng, Jiawei ;

Sun, Darren Delai .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2011, 36 (11) :6560-6568

[10] Enhanced visible-light-driven photocatalytic hydrogen generation over g-C3N4 through loading the noble metal-free NiS2 cocatalyst [J].

Yin, Lisha ;

Yuan, Yu-Peng ;

Cao, Shao-Wen ;

Zhang, Zhenyi ;

Xue, Can .

RSC ADVANCES, 2014, 4 (12) :6127-6132

← 1 2 →