文献类型：期刊文献

英文题名：Entropy-Maximized Synthesis of Multimetallic Nanoparticle Catalysts via a Ultrasonication-Assisted Wet Chemistry Method under Ambient Conditions

作者：Liu, Miaomiao[1,2];Zhang, Zihao[2];Okejiri, Francis[2];Yang, Shize[3];Zhou, Shenghu[1];Dai, Sheng[2,4]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[2]Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA;[3]Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA;[4]Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA

年份：2019

卷号：6

期号：7

外文期刊名：ADVANCED MATERIALS INTERFACES

收录：;EI(收录号：20191006590307);WOS:【SCI-EXPANDED(收录号:WOS:000468010200015)】；

基金：The research was supported by the U.S. Department of Energy, Basic Energy Science, Chemical, Geoscience, and Bioscience Division. Part of the electron microscopy analysis was carried out at the Centre for Functional Nanomaterials, Brookhaven National Laboratory (BNL), which is supported by the DOE, Office of Basic Energy Science, under contract DE-SC0012704. S.Z. thanks the National Natural Science Foundation of China (Grant No. 21776090). M.L. was financially supported by the China Scholarship Council for one year's study at the University of Tennessee and Oak Ridge National Laboratory.

语种：英文

外文关键词：alkaline HER; high-entropy alloy; nanoparticles; ultrasonication-assisted; wet chemistry method

摘要：A facile ultrasonication-assisted wet chemistry method for preparing multicomponent alloy nanoparticles (NPs) including high-entropy alloys (HEAs) is reported. PtAuPdRhRu alloy (HEA), quaternary PtAuPdRh alloy, and ternary PtAuPd alloy NPs are produced with approximate to 3 nm in diameter. Taking advantage of the acoustic cavitation phenomenon in ultrasonication process, noble metal precursors could be co-reduced by chemical reductants and transform to alloy structures under operation at room conditions. The instantaneous massive energy (approximate to 5000 degrees C, 2000 atm) occurring in momentary timespans (10(-9) s) contributes to the formation of multimetallic mixed nanomaterials driven by entropy maximization. Owing to strong synergistic effects, the catalysts with the HEA NPs supported on carbons exhibit prominent electrocatalytic activities for hydrogen evolution reaction.