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The Role of Ruthenium on Carbon‐Supported PtRu Catalysts for Electrocatalytic Glycerol Oxidation under Acidic Conditions
Author(s) -
Kim Youngmin,
Kim Hyun Woo,
Lee Seonhwa,
Han Jisu,
Lee Daewon,
Kim JeongRang,
Kim TaeWan,
Kim ChulUng,
Jeong SoonYong,
Chae HoJeong,
Kim BeomSik,
Chang Hyunju,
Kim Won Bae,
Choi Sung Mook,
Kim Hyung Ju
Publication year - 2017
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201601325
Subject(s) - catalysis , ruthenium , cyclic voltammetry , chemistry , platinum , x ray photoelectron spectroscopy , glycerol , inorganic chemistry , chemical engineering , electrochemistry , organic chemistry , electrode , engineering
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 Pt 5 Ru 5 /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.