Effects of Mo sources on Mo doped SrTiO3 powder prepared by spray pyrolysis for H2 evolution under visible light irradiation

被引：25

作者：

Kang, Hyun Woo ^{[1
]}

Park, Seung Bin ^{[2
]}

机构：

[1] Korea Atom Energy Res Inst, Daedeok Daero 989-111, Daejeon 305353, South Korea

[2] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Daehak Ro 291, Daejeon 305701, South Korea

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2016年 / 211卷

关键词：

Photocatalyst; Hydrogen production; Visible light; Spray pyrolysis; Molybdenum oxidation state; AQUEOUS-METHANOL SOLUTION; RAY PHOTOELECTRON-SPECTROSCOPY; PHOTOCATALYTIC ACTIVITIES; ELECTRONIC-STRUCTURE; POLYMERIC PRECURSOR; MOLYBDENUM OXIDES; CODOPED TIO2; WATER; METAL; CHROMIUM;

D O I：

10.1016/j.mseb.2016.06.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

SrTiO3 was doped with three types of molybdenum ions (Mo6+, Mo4+, and Mo2+) by spray pyrolysis. The molybdenum ions narrowed the band gap of SrTiO3 to allow hydrogen evolution under visible-light irradiation. The molybdenum-doped SrTiO3 photocatalyst prepared from MoO2 (0.4 mol%) exhibited hydrogen evolution up to a rate of 1410.3 mol g(-1) h(-1) with an induction period of 1 h. The use of MoO2 resulted in SrTiO3 doping by Mo6+ and Mo4+ ions, which enhanced the hydrogen evolution by forming 4d-like states under the conduction band. The ionic structure of SrTiO3 doped with Mo4+ and Mo4+ could be expressed as Sr[Ti-1(-x-y)4+(Mox4+Moy6+)]O-3 from the X-ray photoelectron spectra. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：67 / 74

页数：8

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