Platinum-Tin Oxide Core鈥揝hell Catalysts for Efficient Electro-Oxidation of Ethanol

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• 作者：Wenxin Du ; Guangxing Yang ; Emily Wong ; N. Aaron Deskins ; Anatoly I. Frenkel ; Dong Su ; Xiaowei Teng
• 刊名：Journal of the American Chemical Society
• 出版年：2014
• 出版时间：August 6, 2014
• 年：2014
• 卷：136
• 期：31
• 页码：10862-10865
• 全文大小：251K
• ISSN：1520-5126

文摘

Platinum-tin (Pt/Sn) binary nanoparticles are active electrocatalysts for the ethanol oxidation reaction (EOR), but inactive for splitting the C-C bond of ethanol to CO₂. Here we studied detailed structure properties of Pt/Sn catalysts for the EOR, especially CO₂ generation in situ using a CO₂ microelectrode. We found that composition and crystalline structure of the tin element played important roles in the CO₂ generation: non-alloyed Pt₄₆-(SnO₂)₅₄ core鈥搒hell particles demonstrated a strong capability for C-C bond breaking of ethanol than pure Pt and intermetallic Pt/Sn, showing 4.1 times higher CO₂ peak partial pressure generated from EOR than commercial Pt/C.