Anchoring gold nanoparticles on poly(3,4-ethylenedioxythiophene) (PEDOT) nanonet as three-dimensional electrocatalysts toward ethanol and 2-propanol oxidation

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:541

Article

Wang, Caiqin^1,2,4  Zhang, Ke³  Xu, Hui³  Du, Yukou³  Goh, M. Cynthia⁴ 

[1] Nanjing Forestry Univ, Coll Sci, Nanjing 210037, Jiangsu, Peoples R China

[2] Nanjing Forestry Univ, Inst Mat Phys & Chem, Nanjing 210037, Jiangsu, Peoples R China

[3] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China

[4] Univ Toronto, Dept Chem, Toronto, ON M5S3H6, Canada

关键词: Au;    PEDOT nanonet;    Ethanol;    2-Propanol;    Electro-oxidation;   

DOI  :  10.1016/j.jcis.2019.01.055

来源: Elsevier

【 摘 要 】

Renewable alcohol oxidation is of vital significance for clean energy conversion and storage. Here, we fabricated a three-dimensional (3D) nanonet-like hybrid catalyst combining Au nanoparticles and poly(3,4-ethylenedioxythiophene) (PEDOT) together, in which PEDOT nanonets act as the framework of the 3D catalyst and the support for the dispersion of Au nanoparticles. The catalyst was designated as Au-PEDOT. By using conductive carbon cloth (CC) as electrode substrates, the as-fabricated Au-PEDOT/CC electrodes were applied to evaluate the electrocatalytic activity towards ethanol and 2-propanol in the alkaline media, respectively. The catalytic activity on Au-PEDOT/CC in terms of the peak current and/or peak current density towards ethanol and 2-propanol oxidation is five times higher than that on comparative Au/CC catalysts, respectively, which is also higher than that on some similar materials reported in the literature. In addition, the Au-PEDOT/CC electrode also possessed great durability and reproducibility. This enhancement in electrocatalytic activity can be attributed to a number of factors: the nano-scale of the Au catalysts, the 3D nanostructure of the catalysts, the conductivity of PEDOT, as well as the effect of alkaline media. These results indicate the as-synthesized Au-PEDOT is a promising electrocatalyst for liquid fuel oxidation. (C) 2019 Elsevier Inc. All rights reserved.

【 授权许可】

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