Abstract
Bimetallic Au3M (M = Ni, Co, Fe) nanoparticles (NPs) were synthesized by reducing a mixture of Au3+ and metal cations (Ni2+, Co2+, Fe3+) by butyllithium in the presence of oleylamine. Au3M NPs were then deposited onto a commercial SiO2 support. The Au3M/SiO2 samples were not particularly active in the catalytic reduction of p-nitrophenol unless they were converted into Au–MO x /SiO2 after appropriate thermal treatment in air. The Au–MO x /SiO2 catalysts showed good thermal stability and significantly higher p-nitrophenol conversions than Au/SiO2. Relevant characterization was conducted employing X-ray diffraction, transmission electron microscopy, Fourier-transform infrared spectroscopy, and ultraviolet–visible spectroscopy.
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Acknowledgments
S.H. Zhou thanks China Zhejiang Provincial Natural Science Foundation (Grant No. Y4110116) and the Ministry of Science and Technology of China (Grant No. 2012DFA40550) for financial support. D.Y. Hua thanks National Natural Science Foundation (Grant No. 11375091) and Natural Science Foundation of Ningbo (Grant No. 2011A610171). Z. Ma acknowledges the financial support by National Natural Science Foundation of China (Grant Nos. 21007011 and 21177028), the Ph.D. Programs Foundation of the Ministry of Education in China (Grant No. 20100071120012), and the Overseas Returnees Start-Up Research Fund of the Ministry of Education in China.
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Lin, C., Tao, K., Hua, D. et al. Transformation of Au3M/SiO2 (M = Ni, Co, Fe) into Au–MO x /SiO2 Catalysts for the Reduction of p-Nitrophenol. Catal Lett 144, 1001–1008 (2014). https://doi.org/10.1007/s10562-014-1224-6
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DOI: https://doi.org/10.1007/s10562-014-1224-6