Platinum-Tin Oxide Core–Shell Catalysts for Efficient Electro-Oxidation of Ethanol

Platinum-Tin Oxide Core–Shell Catalysts for Efficient Electro-Oxidation of Ethanol

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 micro...

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Veröffentlicht in:Journal of the American Chemical Society 2014-08, Vol.136 (31), p.10862-10865
Hauptverfasser: Du, Wenxin, Yang, Guangxing, Wong, Emily, Deskins, N. Aaron, Frenkel, Anatoly I., Su, Dong, Teng, Xiaowei
Format: Artikel
Sprache:eng
Schlagworte:
Alloys - chemistry
Catalysis
Electrochemistry
Ethanol - chemistry
Oxidation-Reduction
Platinum - chemistry
Tin Compounds - chemistry
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Zusammenfassung: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–shell 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.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja505456w