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Pd local structure and size correlations on the activity of Pd/ TiO2 for photocatalytic reforming of methanol
Authors:
Hasliza
Bahruji
(Universiti Brunei Darussalam)
,
Norli
Abdullah
(The UK Catalysis Hub, Research Complex at Harwell; University College London; National Defence University of Malaysia)
,
Scott M.
Rogers
(The UK Catalysis Hub, Research Complex at Harwell; University College London)
,
Peter P.
Wells
(University of Southampton; .Diamond Light Source)
,
C. Richard A.
Catlow
(The UK Catalysis Hub, Research Complex at Harwell; University College London; Cardiff University)
,
Michael
Bowker
(The UK Catalysis Hub, Research Complex at Harwell; Cardiff University)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Physical Chemistry Chemical Physics
State:
Published (Approved)
Published:
June 2019
Diamond Proposal Number(s):
10306

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, catalyst with highly dispersed nanoparticles obtained at 1 oC temperature exhibits superior photocatalytic activity for hydrogen gas production. At different weight of Pd loading, tailoring two sets of catalysts with different structural properties provide correlation between the changes of Pd local structures with the rate of hydrogen production. The impact of controlling the structural properties of metal nanoparticles in influencing H2 production outweighs the effect of metal loading variation. The differences of Pd/TiO2 activity at the variation of metal loading were correlated with the changes in Pd local structure consequently affecting electronic transfer and photocatalytic efficiency.
Diamond Keywords: Photocatalysis
Subject Areas:
Chemistry,
Energy
Instruments:
B18-Core EXAFS
Added On:
04/07/2019 12:11
Documents:
bjjj555.pdf
Discipline Tags:
Earth Sciences & Environment
Sustainable Energy Systems
Energy
Climate Change
Physical Chemistry
Catalysis
Chemistry
Technical Tags:
Spectroscopy
X-ray Absorption Spectroscopy (XAS)
Extended X-ray Absorption Fine Structure (EXAFS)