Fabrication of catalytically active Au/Pt/Pd trimetallic nanoparticles by rapid injection of NaBH₄

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• 作者：Haijun Zhang ; Lilin Lu ; Yingnan Cao ; Shuang Du ; Zhong Cheng ; Shaowei Zhang
• 关键词：A. Metals ; A. Nanostructures ; B. Chemical synthesis ; D. Catalytic properties
• 刊名：Materials Research Bulletin
• 出版年：January, 2014
• 年：2014
• 卷：49
• 期：Complete
• 页码：393-398
• 全文大小：6236 K

文摘

Au/Pt/Pd trimetallic nanoparticles (TNPs) with an alloyed structure and an average diameter of about 2.0 nm were prepared via reducing the corresponding ions with rapidly injected NaBH₄, and characterized by UV-vis, TEM and HR-TEM. The catalytic activity of as-prepared TNPs for the aerobic glucose oxidation is several times higher than that of Au monometallic nanoparticles with about the same average size, which could be attributed to the catalytically active sites provided by the negatively charged Au atoms as a result of the electron donation from the neighboring Pd atoms. This was well supported by the electron density calculations based on the density functional theory.