文献类型：期刊文献

英文题名：Covalent Grafting of Carbon Nanotubes with a Biomimetic Heme Model Compound To Enhance Oxygen Reduction Reactions

作者：Wei, Ping-Jie[1,2];Yu, Guo-Qiang[1,2];Naruta, Yoshinori[3];Liu, Jin-Gang[1,2]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat MOE, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China;[3]Chubu Univ, Inst Sci & Technol, Kasugai, Aichi 4878501, Japan

年份：2014

卷号：53

期号：26

起止页码：6659

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20142717881569);WOS:【SCI-EXPANDED(收录号:WOS:000338021600012)】；

基金：This study was financially supported by the NSF of China (no 21271072), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, and sponsored by Shanghai Pujiang Program (no. 13J1401900).

语种：英文

外文关键词：bioinorganic chemistry; electrochemistry; enzymes models; oxygen; reduction

摘要：The oxygen reduction reaction (ORR) is one of the most important reactions in both life processes and energy conversion systems. The replacement of noble-metal Pt-based ORR electrocatalysts by nonprecious-metal catalysts is crucial for the large-scale commercialization of automotive fuel cells. Inspired by the mechanisms of dioxygen activation by metalloenzymes, herein we report a structurally well-defined, bio-inspired ORR catalyst that consists of a biomimetic model compound-an axial imidazole-coordinated porphyrin-covalently attached to multiwalled carbon nanotubes. Without pyrolysis, this bio-inspired electrocatalyst demonstrates superior ORR activity and stability compared to those of the state-of-the-art Pt/C catalyst in both acidic and alkaline solutions, thus making it a promising alternative as an ORR electrocatalyst for application in fuel-cell technology.