Journal of South China University of Technology(Natural Science) >

2016 , Vol. 44 >Issue 11: 12 - 18

DOI: https://doi.org/10.3969/j.issn.1000-565X.2016.11.003

Chemistry & Chemical Engineering

Hydrogen Production of Photo-Catalytic Water Splitting by Using Co3O4 Encapsulated Within TiO2 Nanotubes

Expand
  • 1.Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,Guangdong,China; 2.Key Laboratory of Renewable Energy,Chinese Academy of Sciences,Guangzhou 510640,Guangdong,China; 3.Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development,Guangzhou 510640,Guangdong,China; 4.University of Chinese Academy of Sciences,Beijing 100049,China; 5.School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
李新军( 1967-) ，男，博士，研究员，博士生导师，主要从事环境能源材料研究．

Received date: 2016-04-25

  Revised date: 2016-05-31

  Online published: 2016-10-04

Supported by

Supported by the National Natural Science Foundation for Young Scholars( 21303210)

Fold

Abstract

By means of vacuum-assisted impregnation,cobalt nitrate was dipped into TiO2 nanotubes and then calcinated at 400℃.Thus,the photo-catalyst of Co3O4 nanoparticles embedded in TiO2 nanotubes ( TNT) was obtained.The material was characterized by means of XRD,TEM,XPS and UV-Vis spectroscopy,and through the hydrogen production of photo-catalytic water splitting,the photo-catalytic activity of the material was evaluated under a visible-light irradiation.Experimental results show that ( 1) highly-dispersed Co3O4 is embedded within TNT,and its size is 3 ～ 5 nm; ( 2) as compared with the Co3O4 catalyst supported on the exterior surface of TNT,the Co3O4 catalyst confined within TNT shows an enhanced interaction with TNT; and ( 3) the Co3O4 catalyst confined within TNT also shows an enhanced visible light absorption,and it increases the hydrogen production of water splitting under the visible light illumination significantly.

Key words： titanium dioxide nanotube; confinement effect; hydrogen production of photo-catalytic water splitting; cobaltosic oxide

Cite this article

LI Xin-jun ZHANG Jia-feng YANG Xu LIAO Shi-jun . Hydrogen Production of Photo-Catalytic Water Splitting by Using Co3O4 Encapsulated Within TiO2 Nanotubes[J]. Journal of South China University of Technology(Natural Science), 2016 , 44(11) : 12 -18 . DOI: 10.3969/j.issn.1000-565X.2016.11.003

Options
Outlines

/

〈 〉