Enhanced TiO2 photocatalysis by Cu in hydrogen production from aqueous methanol solution
Journal
International Journal of Hydrogen Energy
Journal Volume
29
Journal Issue
15
Pages
1601-1605
Date Issued
2004
Author(s)
Abstract
Cu particles have been deposited on TiO2 by incipient-wetness impregnation followed by low-temperature (400°C) calcination/reduction, and the metallization process leads to significant enhancement in photocatalytic activity of TiO2 for H2 production from aqueous methanol solution. The activity exhibits up to 10-fold enhancement at the optimum loading of ∼ 1.2 wt% Cu. Spectroscopic studies indicated that the Cu particles were oxidized during reaction to have a valence lower those of thermally oxidized particles, which showed inferior activities. Dissolution of Cu ion in TiO 2 lattice, in contrast, resulted in reduction in photocatalytic activity. © 2004 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
Subjects
Cu; Hydrogen; Methanol; Phototcatalysis; TiO2
SDGs
Other Subjects
Copper; Corrosion; Hydrogen; Methanol; Oxidation; Photocatalysis; Electronic energy band structures; Hydrogen production; Photocatalytic activity; Titanium dioxide
Type
journal article