The importance of metal reducibility for the photo-reforming of methanol on transition metal-TiO2 photocatalysts and the use of non-precious metals

被引：46

作者：

Bahruji, Hasliza ^{[1
]}

Bowker, Michael ^{[1
,2
]}

Davies, Philip R. ^{[1
]}

Kennedy, Julia ^{[1
]}

Morgan, David J. ^{[1
]}

机构：

[1] Cardiff Univ, Sch Chem, Cardiff Catalysis Inst, Harwell OX11 0FA, Oxon, England

[2] Rutherford Appleton Lab, UK Catalysis Hub Res Campus Harwell RCaH, Harwell OX11 0FA, Oxon, England

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2015年 / 40卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

Photocatalysis; Water splitting; Transition metal oxide; Precious metal; OPTICAL-PROPERTIES; PT/TIO2; CATALYSTS; PALLADIUM OXIDE; VISIBLE-LIGHT; PARTICLE-SIZE; BAND-GAP; FILMS; TIO2; NANOPARTICLES; WATER;

D O I：

10.1016/j.ijhydene.2014.11.097

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hydrogen production from the photocatalytic reforming of methanol has been conducted on TiO2 with a range of transition metal co-catalysts. The noble metals Pt, Pd and Au catalysts showed much higher activity than non-noble metal catalysts, and this conforms to the general trend of hydrogen production being linked to the ease of reduction of the corresponding transition metal oxides. Metal oxides such as NiO and Fe2O3, with a positive enthalpy of reduction show negligible amounts of hydrogen production. However, when the NiO nanoparticles were carefully pre-reduced, the resulting Ni-NiO/TiO2 showed a big enhancement in catalytic activity. The reducibility trends observed in the study should provide insight into the development of potential catalysts for the photocatalytic splitting of water. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：1465 / 1471

页数：7

共 38 条

[1] Influence of particle size and nature of Pd species on the hydrodechlorination of chloroaromatics: Studies on Pd/TiO2 catalysts in chlorobenzene conversion [J].