Separate evolution of H2 and O2 from H2O on visible light-responsive TiO2 thin film photocatalysts prepared by an RF magnetron sputtering method

被引：9
|
作者：
Matsuoka, Masaya [1 ]
Ebrahimi, Afshin [1 ]
Nakagawa, Masaki [1 ]
Kim, Tae-Ho [1 ]
Kitano, Masaaki [1 ]
Takeuchi, Masato [1 ]
Anpo, Masakazu [1 ]
机构：
[1] Osaka Prefecture Univ, Grad Sch Engn, Dept Appl Chem, Naka Ku, Osaka 5998531, Japan
来源：
RESEARCH ON CHEMICAL INTERMEDIATES | 2009年 / 35卷 / 8-9期
关键词：
Photocatalytic water splitting; TiO2; photocatalyst; Separate evolution of H-2 and O-2; Visible light; Calcination treatment in NH3; Z-SCHEME; HYDROGEN-PRODUCTION; WATER; COCATALYST;
D O I：
10.1007/s11164-009-0082-0
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Visible light-responsive TiO2 thin film photocatalysts (Vis-TiO2) have been prepared on Ti metal foil (Vis-TiO2/Ti) or ITO glass (Vis-TiO2/ITO) substrates by a radio-frequency magnetron sputtering (RF-MS) method. The UV-Vis spectra as well as photoelectrochemical performance of Vis-TiO2 were affected by various calcination treatments such as calcination in air or NH3. Calcination treatment in NH3 (1.0 x 10(4) Pa, 673 K) was particularly effective in increasing the visible light absorption of Vis-TiO2 as well as in enhancing its photoelectrochemical performance and photocatalytic activity. A novel Vis-TiO2 thin film photocatalyst (Vis-TiO2/Ti/Pt) was prepared by an RF-MS method where Vis-TiO2 was deposited on one side of a Ti metal foil substrate and nanoparticles of Pt were deposited on the other side. The separate evolution of H-2 and O-2 from H2O could be successfully achieved by using an H-type glass cell consisting of two aqueous phases separated by Vis-TiO2/Ti/Pt and a proton-exchange membrane. It was found that the rate of the separate evolution of H-2 and O-2 was also dramatically enhanced by calcination treatment of Vis-TiO2 in NH3.
引用
收藏
页码：997 / 1004
页数：8
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