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Catalytic activities for methanol oxidation on ultrathin CuPt₃ wavy nanowires with/without smart polymer.

ABSTRACT: Superior catalytic activity and stability for the methanol oxidation reaction of a direct methanol-air fuel cell is achieved with "clean" ultrathin CuPt₃ wavy nanowires. The nanowires are synthesized for the first time by functionalizing CuPt₃ nanoparticles with amine-terminated poly(N-isopropylacrylamide), a thermosensitive "smart" polymer having a phase transition at a liquid-electrolyte T_t (low critical solution temperature, 35 °C). Interestingly, retention of the functionalizing smart polymer on the surface of the nanowires reversibly switches the catalytic activity to lower rates above the T_t. The catalytic performance of the "clean" CuPt₃ nanowires is shown to be significantly improved over that of commercial Pt black catalyst, owing to their unique structural advantages and bimetallic synergetic effect.

SUBMITTER: Fu G

PROVIDER: S-EPMC6054026 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

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Catalytic activities for methanol oxidation on ultrathin CuPt3 wavy nanowires with/without smart polymer.

Fu Gengtao G Yan Xiaoxiao X Cui Zhiming Z Sun Dongmei D Xu Lin L Tang Yawen Y Goodenough John B JB Lee Jong-Min JM

Chemical science 20160517 8

Superior catalytic activity and stability for the methanol oxidation reaction of a direct methanol-air fuel cell is achieved with "clean" ultrathin CuPt3 wavy nanowires. The nanowires are synthesized for the first time by functionalizing CuPt3 nanoparticles with amine-terminated poly(N-isopropylacrylamide), a thermosensitive "smart" polymer having a phase transition at a liquid-electrolyte Tt (low critical solution temperature, 35 °C). Interestingly ...[more]

PMID: 30090289

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