Research Abstract


Platinum-modified covalent triazine frameworks hybridized with ​carbon nanoparticles as ​methanol-tolerant oxygen reduction electrocatalysts

2014年9月22日 Nature Communications 5 : 5040 doi: 10.1038/ncomms6040


神谷 和秀1, 釜井 亮2,3, 橋本 和仁1 & 中西 周次1

  1. 東京大学大学院 工学系研究科 応用化学専攻
  2. 東京大学 先端科学技術研究センター
  3. パナソニック株式会社 エコソリューションズ社 コア技術開発センター
Covalent triazine frameworks, which are crosslinked porous polymers with two-dimensional molecular structures, are promising materials for heterogeneous catalysts. However, the application of the frameworks as electrocatalysts has not been achieved to date because of their poor electrical conductivity. Here we report that platinum-modified covalent triazine frameworks hybridized with conductive ​carbon nanoparticles are successfully synthesized by introducing ​carbon nanoparticles during the polymerization process of covalent triazine frameworks. The resulting materials exhibit clear electrocatalytic activity for ​oxygen reduction reactions in acidic solutions. More interestingly, the platinum-modified covalent triazine frameworks show almost no activity for ​methanol oxidation, in contrast to commercial carbon-supported ​platinum. Thus, platinum-modified covalent triazine frameworks hybridized with ​carbon nanoparticles exhibit selective activity for ​oxygen reduction reactions even in the presence of high concentrations of ​methanol, which indicates potential utility as a cathode catalyst in direct methanol fuel cells.