The Role of Ruthenium on Carbon-Supported PtRu Catalysts for Electrocatalytic Glycerol Oxidation under Acidic Conditions
SCIE
SCOPUS
- Title
- The Role of Ruthenium on Carbon-Supported PtRu Catalysts for Electrocatalytic Glycerol Oxidation under Acidic Conditions
- Authors
- Kim, Y.; Kim, H.W.; Lee, S.; Han, J.; Lee, D.; Kim, J.-R.; Kim, T.-W.; Kim, C.-U.; Jeong, S.-Y.; Chae, H.-J.; Kim, B.-S.; Chang, H.; Kim, Won Bae; Choi, S.M.; Kim, H.J.
- Date Issued
- 2017-05
- Publisher
- WILEY-V C H VERLAG GMBH
- Abstract
- A series of binary PtRu catalysts with different Pt/Ru atomic ratios (from 7:3 to 3:7) were synthesized on a carbon support using the colloidal method; they were then used for electrooxidation of glycerol in acid media. X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and X-ray absorption spectroscopy analyses were used to investigate particle size, size distribution, and structural and electronic properties of the prepared catalysts. Ru added to the Pt-based catalysts caused structural and electronic modifications over the PtRu alloy catalyst formation. The electrocatalytic activities of PtRu/C series catalysts were investigated using cyclic voltammetry. The Pt5Ru5/C catalyst shows enhanced catalytic activity at least 40 % higher than that of the Pt/C catalyst, with improved stability for glycerol electrooxidation; these improvements are attributed to structural and electronic modifications of the Pt catalysts. Using an electrocatalytic batch reactor, product analysis after the oxidation reaction was performed by high-performance liquid chromatography to determine and compare the reaction pathways on the Pt/C and PtRu/C catalysts. To understand different catalytic activities of glycerol oxidation on the PtRu alloy surfaces, density functional calculations were performed. ? 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/50519
- DOI
- 10.1002/cctc.201601325
- ISSN
- 1867-3880
- Article Type
- Article
- Citation
- ChemCatChem, vol. 9, no. 9, page. 1683 - 1690, 2017-05
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