期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 123, 期 2-3, 页码 390-395出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2010.04.027
关键词
Poly(p-phenylene); Composite catalyst; Electrocatalytic oxidation; Isopropanol
资金
- Ministry of Education, China [2007-207058]
- Natural Science Foundation of Jiangxi province [2007GZH1091]
- Jiangxi Provincial Department of Education [GJJ08369]
- [NSFC50663001]
- [20673075]
Poly(p-phenylene) (PPP) films with good electrochemical activity and good thermal stability were synthesized by a low-potential electrochemical polymerization of biphenyl in pure boron trifluoride diethyl etherate. As-formed PPP film was firstly used as a catalyst support. Pd-Au nanoparticles were successfully electro-deposited on PPP films (namely, Pd-Au/PPP) and used for the electrooxidation of isopropanol in alkaline media. The Pd-Au/PPP composite catalyst shows a high electrochemical active surface area in the hydrogen adsorption potential region. The results for isopropanol oxidation indicate that Pd-Au/PPP have higher catalytic activity and stronger poisoning-resistance than the Pd-Au deposited on the bare electrode. Furthermore, the role of PPP in the composite catalyst and supplemental effect are discussed. The present study evidences that Pd-Au/PPP is a promising choice as a composite catalyst for isopropanol electrooxidation in alkaline medium. (C) 2010 Elsevier B.V. All rights reserved.
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