Ag+‑Induced Assembly of Pt Clusters for Photocatalytic Hydrogen Production

• Published in: Inorganic chemistry Vol. 63; no. 38; pp. 17672 - 17680
• Main Authors: Zhao, Xiaojing, Chen, Wen-Jie, Liang, Qing-Man, Chen, Su-Kang, Xun, Jiao, Geng, Bi-Jun, Su, Hai-Feng, Yang, Yang
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 23.09.2024
• ISSN: 0020-1669; 1520-510X; 1520-510X
• DOI: 10.1021/acs.inorgchem.4c02483

Cluster-assembled nanowires provide a unique strategy for the preparation of high-performance nanostructures. However, existing preparations are limited by complex processes and harsh reaction conditions. Here, Ag+ ions were utilized as a novel structure-directing agent to generate the self-assembly of Pt clusters to form ultrafine nanowires with a diameter of less than 5 nm. Electrospray ionization mass spectrometry (ESI-MS) and extended X-ray absorption fine structure (EXAFS) characterizations demonstrated that every Ag+ bridged two [Pt3(CO)3(μ2-CO)3] n 2– clusters through coordination and formed a sandwich-like structure of [Pt3(CO)3(μ2-CO)3] n Ag­[Pt3(CO)3(μ2-CO)3] m 3–. As a result, multiple sandwich-like structures of [Pt3(CO)3(μ2-CO)3] n Ag­[Pt3(CO)3(μ2-CO)3] m 3– were established by Ag+ to form Pt nanowire superstructures {[Pt3(CO)6] n Ag­[Pt3(CO)6] m Ag­[Pt3(CO)6] x}∞ (abbreviated as Ag–Pt NWS). Our results demonstrate that the Pt nanowire superstructures showed promising cocatalytic performance for photocatalytic H2 production with the involvement of Ag+, which promises a desirable way to develop advanced functional nanomaterials.