Bottom-up precise synthesis of stable platinum dimers on graphene

Abstract Supported metal clusters containing only a few atoms are of great interest. Progress has been made in synthesis of metal single-atom catalysts. However, precise synthesis of metal dimers on high-surface area support remains a grand challenge. Here, we show that Pt 2 dimers can be fabricated with a bottom–up approach on graphene using atomic layer deposition, through proper nucleation sites creation, Pt 1 single-atom deposition and attaching a secondary Pt atom selectively on the preliminary one. Scanning transmission electron microscopy, x-ray absorption spectroscopy, and theoretical calculations suggest that the Pt 2 dimers are likely in the oxidized form of Pt 2 O x . In hydrolytic dehydrogenation…

• SS
  Salt Science Research Foundation

  Award: BL14W1
• NN
  National Natural Science Foundation of China

  Awards: 21533007, 21473169, 21673215, 21233007, 11621063, 11404314, WK2060030017
• UO
  University of Science and Technology of China
• RP
  Recruitment Program of Global Experts
• NS
  Natural Science Foundation for Young Scientists of Shanxi Province
• NS
  Natural Science Foundation of Anhui Province

  Award: 1708085MA06
• YS
  Young Scientists Fund
• FR
  Fundamental Research Funds for the Central Universities

  Awards: WK2060030017, 11621063, BL14W1