Ultrathin dendritic Pt3Cu triangular pyramid caps with enhanced electrocatalytic activity

Yun Kuang, Zhao Cai, Ying Zhang, Dongsheng He, Xiuling Yan, Yongmin Bi, Yaping Li, Zi Li, Xiaoming Sun

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)

Abstract

Here we report on the synthesis of novel dendritic Pt3Cu triangular pyramid caps via a solvothermal coreduction method. These caps had three-dimensional caved structures with ultrathin branches, as evidenced by high-resolution transmission electron microscopy (HRTEM) and HAADF-STEM characterization. Tuning the reduction kinetics of two metal precursors by an iodide ion was believed to be the key for the formation of an alloyed nanostructure. Electro-oxidation of methanol and formic acid showed dramatically improved electrocatalytic activities and poison-tolerance for these nanoalloys as compared to commercial Pt/C catalysts, which was attributed to their unique open porous structure with interconnected network, ultrahigh surface areas, as well as synergetic effect of the two metallic components.

Original languageEnglish
Pages (from-to)17748-17752
Number of pages5
JournalACS Applied Materials & Interfaces
Volume6
Issue number20
Early online date7 Oct 2014
DOIs
Publication statusPublished - 22 Oct 2014

Keywords

  • anti-CO poisoning
  • dendritic pyramid cap
  • fuel oxidation
  • Pt3Cu alloy
  • ultrathin branch

ASJC Scopus subject areas

  • Materials Science(all)

Fingerprint

Dive into the research topics of 'Ultrathin dendritic Pt<sub>3</sub>Cu triangular pyramid caps with enhanced electrocatalytic activity'. Together they form a unique fingerprint.

Cite this