title: Synthesis of Pt-Ni alloy nanocrystals with high-index facets and enhanced electrocatalytic properties.
abstract: The shape-controlled synthesis of multicomponent metal nanocrystals (NCs) bounded by high-index facets (HIFs) is of significant importance in the design and synthesis of high-activity catalysts. We report herein the preparation of Pt-Ni alloy NCs by tuning their shape from concave-nanocubic (CNC) to nanocubic and hexoctahedral (HOH). Owing to the synergy of the HIFs and the electronic effect of the Pt-Ni alloy, the as-prepared CNC and HOH Pt-Ni alloy NCs exhibited excellent catalytic properties for the electrooxidation of methanol and formic acid, as well as for the oxygen reduction reaction (ORR).
authors.affiliation: State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249 (China).
authors.forename: Xiling
authors.initials: X
authors.lastname: Xu
authors.forename: Xin
authors.initials: X
authors.lastname: Zhang
authors.forename: Hui
authors.initials: H
authors.lastname: Sun
authors.forename: Ying
authors.initials: Y
authors.lastname: Yang
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Dai
authors.forename: Jinsen
authors.initials: J
authors.lastname: Gao
authors.forename: Xueyong
authors.initials: X
authors.lastname: Li
authors.forename: Pengfang
authors.initials: P
authors.lastname: Zhang
authors.forename: Hong-Hui
authors.initials: HH
authors.lastname: Wang
authors.forename: Neng-Fei
authors.initials: NF
authors.lastname: Yu
authors.forename: Shi-Gang
authors.initials: SG
authors.lastname: Sun
keywords: alloys; electrocatalysis; electrooxidation; nanocrystals; oxygen reduction reaction