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Updated: Feb 3, 2026

Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids
Published on: August 23, 2018
A general synthesis approach for supported bimetallic nanoparticles via surface inorganometallic chemistry
Kunlun Ding1, David A Cullen2, Laibao Zhang3
1Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA 70803, USA. kunlunding@lsu.edu.
Abstract:
The synthesis of ultrasmall supported bimetallic nanoparticles (between 1 and 3 nanometers in diameter) with well-defined stoichiometry and intimacy between constituent metals remains a substantial challenge. We synthesized 10 different supported bimetallic nanoparticles via surface inorganometallic chemistry by decomposing and reducing surface-adsorbed heterometallic double complex salts, which are readily obtained upon sequential adsorption of target cations and anions on a silica substrate. For example, adsorption of tetraamminepalladium(II) [Pd(NH3)4 2+] followed by adsorption of tetrachloroplatinate [PtCl4 2-] was used to form palladium-platinum (Pd-Pt) nanoparticles. These supported bimetallic nanoparticles show enhanced catalytic performance in acetylene selective hydrogenation, which clearly demonstrates a synergistic effect between constituent metals.
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