title: Direct synthesis of pure single-crystalline Magnéli phase Ti8O15 nanowires as conductive carbon-free materials for electrocatalysis.
abstract: The Magnéli phase Ti8O15 nanowires (NWs) have been grown directly on a Ti substrate by a facile one-step evaporation-deposition synthesis method under a hydrogen atmosphere. The Ti8O15 NWs exhibit an outstanding electrical conductivity at room temperature. The electrical conductivity of a single Ti8O15 nanowire is 20.6 S cm(-1) at 300 K. Theoretical calculations manifest that the existence of a large number of oxygen vacancies changes the band structure, resulting in the reduction of the electronic resistance. The Magnéli phase Ti8O15 nanowires have been used as conductive carbon-free supports to load Pt nanoparticles for direct methanol oxidation reaction (MOR). The Pt/Ti8O15 NWs show an enhanced activity and extremely high durability compared with commercial Pt/C catalysts.
authors.affiliation: State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen University, Guangzhou, 510275, PR China. stsspk@mail.sysu.edu.cn.
authors.forename: Chunyong
authors.initials: C
authors.lastname: He
authors.forename: Shiyong
authors.initials: S
authors.lastname: Chang
authors.forename: Xiangdong
authors.initials: X
authors.lastname: Huang
authors.forename: Qingquan
authors.initials: Q
authors.lastname: Wang
authors.forename: Ao
authors.initials: A
authors.lastname: Mei
authors.forename: Pei Kang
authors.initials: PK
authors.lastname: Shen