Photocatalytic evolution of hydrogen and oxygen from ceramic wafers of commercial titanias

被引：17

作者：

Elouali, Sofia ^{[1
]}

Mills, Andrew ^{[2
]}

Parkin, Ivan P. ^{[1
]}

Bailey, Edward ^{[1
]}

McMillan, Paul F. ^{[1
]}

Darr, Jawwad A. ^{[1
]}

机构：

[1] UCL, Dept Chem, London WC1H 0AJ, England

[2] Univ Strathclyde, Dept Pure & Appl Chem, Glasgow G1 1XQ, Lanark, Scotland

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2010年 / 216卷 / 2-3期

基金：

英国工程与自然科学研究理事会;

关键词：

TiO2; Ceramic wafer; Water-splitting; Photocatalysis; VISIBLE-LIGHT; TIO2; WATER; CELLS;

D O I：

10.1016/j.jphotochem.2010.07.033

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Several commercial titania photocatalyst powders were formed into thin (ca. 350 mu m), 25 mm diameter ceramic wafers, sputter deposited with Pt on one side. The activities of each of the ceramic wafers were tested for hydrogen and oxygen evolution from aqueous sacrificial systems. The commercial sample PC50 (Millennium Chemicals, UK) yielded reproducible ceramic wafers with high activity for water photoreduction. Many of the ceramic wafers displayed low water photo-oxidation activities; however, these were greatly increased with addition of a NiO co-catalyst. In a selected case, hydrogen evolution activity was compared between a PC50 wafer and an identical weight of platinised PC50 powder suspension. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：110 / 114

页数：5

共 23 条

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