Chemical transformation of solution-processed Ag nanocrystal thin films into electrically conductive and catalytically active Pt-based nanostructures

Mingi Seong, Hoyoung Kim, Ho Young Woo, Md Ashraf Hossain, Jun Hyuk Ahn, Soo Kil Kim, Taejong Paik, Soong Ju Oh

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Efficient methods for the controlled syntheses of metal nanocrystals are important for emerging electronics and catalysis applications. In this report, we present a solution-based method for the fabrication of Pt-coated Ag nanocrystal (NC)thin films through the use of ligand-exchange and electroless deposition. We successfully prepared uniform or bumpy Ag@Pt core/shell structures, as well as Ag–Pt alloy structures, through control of the reducing agents. We first report the Ag–Pt alloy structures can be synthesized by low-temperature and solution-based process of post treatment that exhibited high catalytic activity toward the hydrogen evolution reaction.

Original languageEnglish
Pages (from-to)388-395
Number of pages8
JournalJournal of Industrial and Engineering Chemistry
Volume76
DOIs
Publication statusPublished - 2019 Aug 25

Keywords

  • Electroless deposition
  • Galvanic displacement
  • Hydrogen evolution reaction
  • Pt–Ag alloy structure
  • Silver nanocrystal

ASJC Scopus subject areas

  • Chemical Engineering(all)

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