Epitaxial Growth of Multimetallic Pd@PtM (M = Ni, Rh, Ru) Core–Shell Nanoplates Realized by in Situ-Produced CO from Interfacial Catalytic Reactions

详细信息    查看全文

• 作者：Yucong Yan ; Hao Shan ; Ge Li ; Fan Xiao ; Yingying Jiang ; Youyi Yan ; Chuanhong Jin ; Hui Zhang ; Jianbo Wu ; Deren Yang
• 刊名：Nano Letters
• 出版年：2016
• 出版时间：December 14, 2016
• 年：2016
• 卷：16
• 期：12
• 页码：7999-8004
• 全文大小：526K
• ISSN：1530-6992

文摘

Pt-based multimetallic core–shell nanoplates have received great attention as advanced catalysts, but the synthesis is still challenging. Here we report the synthesis of multimetallic Pd@PtM (M = Ni, Rh, Ru) nanoplates including Pd@Pt nanoplates, in which Pt or Pt alloy shells with controlled thickness epitaxially grow on plate-like Pd seeds. The key to achieve high-quality Pt-based multimetallic nanoplates is in situ generation of CO through interfacial catalytic reactions associated with Pd nanoplates and benzyl alcohol. In addition, the accurate control in a trace amount of CO is also of great importance for conformal growth of multimetallic core–shell nanoplates. The Pd@PtNi nanoplates exhibit substantially improved activity and stability for methanol oxidation reaction (MOR) compared to the Pd@Pt nanoplates and commercial Pt catalysts due to the advantages arising from plate-like, core–shell, and alloy structures.