Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/105285
Title: Formation of monometallic Au and Pd and bimetallic Au–Pd nanoparticles confined in mesopores via Ar glow-discharge plasma reduction and their catalytic applications in aerobic oxidation of benzyl alcohol
Authors: Yang, Yanhui
Jia, Xinli
Zhang, Hua
Zhou, Chunmei
Chen, Yuanting
Wang, Houpeng
Liu, Chang-jun
Zeng, Zhiyuan
Issue Date: 2012
Source: Chen, Y., Wang, H., Liu, C.-J., Zeng, Z., Zhang, H., Zhou, C., et al. (2012). Formation of monometallic Au and Pd and bimetallic Au–Pd nanoparticles confined in mesopores via Ar glow-discharge plasma reduction and their catalytic applications in aerobic oxidation of benzyl alcohol. Journal of Catalysis, 289, 105-117.
Series/Report no.: Journal of catalysis
Abstract: Successfully prepared via Ar glow-discharge plasma reduction, Au–Pd bimetallic nanoparticles were highly active in the selective oxidation of benzyl alcohol, showing a rate constant of 0.50 h−1, which was 12.5 and 2× that of Au and Pd monometallic catalysts, respectively. Characterization analyses attributed the enhancement in both activity and selectivity to a Pd-rich shell/Au-rich core structure with abundant surface-coordination-unsaturated Pd atoms of those effectively confined and well-dispersed Au–Pd nanoparticles. As a green, efficient, and safe protocol, plasma reduction outperformed conventional H2 thermal reduction due to the different particle nucleation and growth mechanism, which afforded modified morphology and surface chemistry of metal nanoparticles. Further oxidation and re-reduction of plasma-reduced Au–Pd catalyst resulted in the atomic rearrangement of nanoparticles, leading to inferior catalytic performance.
URI: https://hdl.handle.net/10356/105285
http://hdl.handle.net/10220/17517
ISSN: 0021-9517
DOI: 10.1016/j.jcat.2012.01.020
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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