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

Abdullah, Norli, Bahruji, Hasliza, Rogers, Scott M., Wells, Peter P., Catlow, C. Richard A. ORCID: and Bowker, Michael ORCID: 2019. Pd local structure and size correlations to the activity of Pd/TiO2 for photocatalytic reforming of methanol. Physical Chemistry Chemical Physics 21 (29) , pp. 16154-16160. 10.1039/C9CP00826H

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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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Publisher: Royal Society of Chemistry
ISSN: 1463-9076
Funders: EPSRC
Date of First Compliant Deposit: 22 August 2019
Date of Acceptance: 25 June 2019
Last Modified: 05 May 2023 12:19

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