文献类型：期刊文献

英文题名：Simple One-Step Molten Salt Method for Synthesizing Highly Efficient MXene-Supported Pt Nanoalloy Electrocatalysts

作者：Wang, Ya[1,2];Li, Lili[3,4];Shen, Miao[1,2];Tang, Rui[1,2];Zhou, Jing[1,2];Han, Ling[1,2];Zhang, Xiuqing[5];Zhang, Linjuan[1,2];Kim, Guntae[1,2];Wang, Jian-Qiang[1,2]

机构：[1]Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China;[2]Univ Chinese Acad Sci, Beijing 100049, Peoples R China;[3]Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China;[4]Shandong Univ, Inst Crystal Mat, Jinan 250100, Peoples R China;[5]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2023

卷号：10

期号：33

外文期刊名：ADVANCED SCIENCE

收录：;EI(收录号：20234314931138);WOS:【SCI-EXPANDED(收录号:WOS:001086975300001)】；

基金：This work was financially supported by the Natural Science Foundation of Shanghai (Grant No.21ZR1476200), the National Science Foundation of China (Grant No.22209201), the "Transformation Technologies for Clean Energy and Demonstration" Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA21000000), and the CAS Pioneer Hundred Talents Program (Guntae Kim). Furthermore, the authors thank the Shanghai Synchrotron Radiation Facility (14W1, SSRF).

语种：英文

外文关键词：catalysts; molten salts; MXenes; platinum nanoalloys

摘要：MXene-supported noble metal alloy catalysts exhibit remarkable electrocatalytic activity in various applications. However, there is no facile one-step method for synthesizing these catalysts, because the synthesis of MXenes requires a strongly oxidizing environment and the preparation of platinum nanoalloys requires a strongly reducing environment and high temperatures. Hence, achieving coupling in one step is extremely challenging. In this paper, a straightforward one-step molten salt method for preparing MXene-supported platinum nanoalloy catalysts is proposed. The molten salt acts as the reaction medium to dissolve the transition metals and platinum ions at high temperatures. Transition metal ions oxidize the A-site element from its MAX precursor at high temperatures, and the resulting transition metals further reduce platinum ions to form alloys. By coupling Al oxidation and platinum ion reduction using a molten salt solvent, this method directly converts Ti3AlC2 to a Pt-M@Ti(3)C(2)Tx catalyst (where M denotes the transition metal). It further offers the possibility of extending the Pt-M phase to binary, ternary, or quaternary platinum-containing nanoalloys and converting the Al-containing MAX phase to Ti2AlC and Ti3AlCN. Due to the strong interfacial interaction, the as-prepared Pt-Co@Ti(3)C(2)Tx is superior to commercial Pt/C (20 wt.%) in the hydrogen evolution reaction.