Citation: Sheng Zhang, Hai Liu, Na Zhang, Rong Xia, Siyu Kuang, Geping Yin, Xinbin Ma. Tuning the electronic structure of platinum nanocrystals towards high efficient ethanol oxidation[J]. Chinese Journal of Catalysis, ;2019, 40(12): 1904-1911. doi: S1872-2067(19)63442-X shu

Tuning the electronic structure of platinum nanocrystals towards high efficient ethanol oxidation

Sheng Zhang ^a, ,
Hai Liu ^a ,
Na Zhang ^c ,
Rong Xia ^a ,
Siyu Kuang ^a ,
Geping Yin ^b ,
Xinbin Ma ^a

a Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Centre of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
b State Key Laboratory of Urban Water Resource and Environment, School of Chemical Engineering & Technology, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China;
c Beijing Aerospace Propulsion Institute, Beijing 100076, China

Received Date: 29 April 2019
Revised Date: 28 June 2019

Fund Project: The authors are grateful to the financial support from the Key Research and Development Project of Tianjin (18ZXJMTG00180), and the National Nature Science Foundation of China (21433003).

Direct ethanol fuel cell is a promising low temperature fuel cell, but its development is hindered by sluggish kinetics of anode catalysts for ethanol oxidation. Here a high efficient platinum/tin oxide/Graphene nanocomposite is synthesized through a facile and environmentally benign method. The structure and morphology are carefully characterized by X-ray diffraction and Transmission electron microscopy, showing a clear platinum/tin oxide heterostructure uniformly dispersed on graphene support. This catalyst demonstrates the highest activity among the reported catalysts and much higher durability towards ethanol oxidation compared to conventional platinum nanocatalysts. The ultrahigh activity originates from promoted removal of poisoning carbon monoxide immediate species on platinum due to a strong electronic donating effect from both tin oxide and graphene, which is fully supported by carbon monoxide stripping and X-ray photoelectron spectroscopy analysis. Our platinum/tin oxide/Graphene appears to be a promising candidate for ethanol oxidation electrocatalysts.
- Platinum nanocrystals,
- Ethanol oxidation,
- Electrocatalyst,
- Pt/tin oxide heterostructure,
- Electronic effect
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