Issue 29, 2019

Pd local structure and size correlations to the activity of Pd/TiO2 for photocatalytic reforming of methanol

Abstract

The interaction between Pd and TiO2 for promoting photocatalytic activity was investigated by tailoring the size of Pd nanoparticles and monitoring the photocatalytic activity of methanol photo-reforming reaction for hydrogen gas production. We show that at 0.6 wt% Pd loading, the catalyst with highly dispersed nanoparticles obtained at 1 °C temperature exhibits superior photocatalytic activity for hydrogen gas production. At different weights of Pd loading, tailoring two sets of catalysts with different structural properties provides correlation between the changes in the Pd local structures and the rate of hydrogen production. The impact of controlling the structural properties of metal nanoparticles on influencing H2 production outweighs the effect of metal loading variation. The differences of Pd/TiO2 activity at the different metal loadings were correlated with the changes in the Pd local structure consequently affecting the electronic transfer and photocatalytic efficiency.

Graphical abstract: Pd local structure and size correlations to the activity of Pd/TiO2 for photocatalytic reforming of methanol

Supplementary files

Article information

Article type
Paper
Submitted
11 Feb 2019
Accepted
25 Jun 2019
First published
25 Jun 2019
This article is Open Access
Creative Commons BY license

Phys. Chem. Chem. Phys., 2019,21, 16154-16160

Pd local structure and size correlations to the activity of Pd/TiO2 for photocatalytic reforming of methanol

N. Abdullah, H. Bahruji, S. M. Rogers, P. P. Wells, C. R. A. Catlow and M. Bowker, Phys. Chem. Chem. Phys., 2019, 21, 16154 DOI: 10.1039/C9CP00826H

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