Abstract
AuPd nanoparticles supported on P25 TiO2 (AuPd/TiO2) were prepared by a facile sol-immobilisation method and investigated for surface plasmon-assisted glycerol oxidation under base-free conditions. The AuPd/TiO2 samples were characterized by UV-vis spectroscopy and transmission electron microscopy. The sol-immobilisation method readily permitted the Au : Pd molar ratio to be changed over a wide range whilst keeping the mean particle size of the AuPd nanoparticles at 3 nm. Visible light irradiation during the reaction has a beneficial effect on the conversion of glycerol with the most marked effect being observed with gold-rich catalysts and the increase of conversion on light irradiation increases linearly with the gold content of the nanoparticles. The reaction selectivity is also affected by the plasmon-assisted oxidation and glycolic acid, not observed during the dark reactions, was observed for all illuminated reactions due to the enhanced activity of these catalysts.
Original language | English |
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Pages (from-to) | 5686-5691 |
Number of pages | 6 |
Journal | Catalysis Science and Technology |
Volume | 9 |
Issue number | 20 |
Early online date | 13 Sept 2019 |
DOIs | |
Publication status | Published - 21 Oct 2019 |
Funding
This work is supported by Cardiff University and the MAXNET Energy research consortium of the Max Planck Society and we thanks Georgios Dodekatos and Harun Tüysüz for their advice and assistance with the reactor design.
ASJC Scopus subject areas
- Catalysis