Padilla, Romen Herrera, Priecel, Peter 
ORCID: 0000-0001-7646-415X, Lin, Ming, Lopez-Sanchez, Jose Antonio ORCID: 0000-0003-3064-0140 and Zhong, Ziyi
(2017)
A versatile sonication-assisted deposition-reduction method for preparing supported metal catalysts for catalytic applications.
ULTRASONICS SONOCHEMISTRY, 35 (Pt B).
pp. 631-639.
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Abstract
This work aims to develop a rapid and efficient strategy for preparing supported metal catalysts for catalytic applications. The sonication-assisted reduction-precipitation method was employed to prepare the heterogeneous mono- and bi-metallic catalysts for photocatalytic degradation of methyl orange (MO) and preferential oxidation (PROX) of CO in H<sub>2</sub>-rich gas. In general, there are three advantages for the sonication-assisted method as compared with the conventional methods, including high dispersion of metal nanoparticles on the catalyst support, the much higher deposition efficiency (DE) than those of the deposition-precipitation (DP) and co-precipitation (CP) methods, and the very fast preparation, which only lasts 10-20s for the deposition. In the AuPd/TiO<sub>2</sub> catalysts series, the AuPd(3:1)/TiO<sub>2</sub> catalyst is the most active for MO photocatalytic degradation; while for PROX reaction, Ru/TiO<sub>2</sub>, Au-Cu/SBA-15 and Pt/γ-Al<sub>2</sub>O<sub>3</sub> catalysts are very active, and the last one showed high stability in the lifetime test. The structural characterization revealed that in the AuPd(3:1)/TiO<sub>2</sub> catalyst, Au-Pd alloy particles were formed and a high percentage of Au atoms was located at the surface. Therefore, this sonication-assisted method is efficient and rapid in the preparation of supported metal catalysts with obvious structural characteristics for various catalytic applications.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Sonication, Supported metal catalyst, Precipitation-reduction, Photocatalysis, Preferential oxidation |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 09 Feb 2017 11:41 |
| Last Modified: | 19 Jan 2023 07:30 |
| DOI: | 10.1016/j.ultsonch.2016.01.018 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3003339 |
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