Experimental and theoretical investigation of high-entropy-alloy/support as a catalyst for reduction reactions  

作　　者：Wail Al Zoubi Bassem Assfour Abdul Wahab Allaf Stefano Leoni Jee-Hyun Kang Young Gun Ko 

机构地区：[1]Materials Electrochemistry Laboratory,School of Materials Science and Engineering,Yeungnam University,Gyeongsan 38541,Republic of Korea [2]Atomic Energy Commission,Department of Chemistry,P.O.Box 6091,Damascus,Syria [3]Arab International University,Department of Pharmaceutical Chemistry and Quality Control,Faculty of Pharmacy,Ghabaghib,Darra,Syria [4]Cardiff University,School of Chemistry,Park Place,CF103AT Cardiff,United Kingdom [5]School of Materials Science and Engineering,Institute of Materials Technology,Yeungnam University,Gyeongsan 38541,Republic of Korea

出　　处：《Journal of Energy Chemistry》2023年第6期132-142,I0005,共12页能源化学（英文版）

基　　金：supported by the National Research Foundation (NRF)of South Korea (2022R1A2C1004392)。

摘　　要：Control of chemical composition and incorporation of multiple metallic elements into a single metal nanoparticle(NP)in an alloyed or a phase-segregated state hold potential scientific merit;however,developing libraries of such structures using effective strategies is challenging owing to the thermodynamic immiscibility of repelling constituent metallic elements.Herein,we present a one-pot interfacial plasma-discharge-driven(IP-D)synthesis strategy for fabricating stable high-entropy-alloy(HEA)NPs exhibiting ultrasmall size on a porous support surface.Accordingly,an electric field was applied for 120 s to enhance the incorporation of multiple metallic elements(i.e.,CuAgFe,CuAgNi,and CuAgNiFe)into ally HEA-NPs.Further,NPs were attached to a porous magnesium oxide surface via rapid cooling.With solar light as the sole energy input,the CuAgNiFe catalyst was investigated as a reusable and sustainable material exhibiting excellent catalytic performance(100%conversion and 99% selectivity within1 min for a hydrogenation reaction)and consistent activity even after 20 cycles for a reduction reaction,considerably outperforming the majority of the conventional photocatalysts.Thus,the proposed strategy establishes a novel method for designing and synthesizing highly efficient and stable catalysts for the convertion of nitroarenes to anilines via chemical reduction.

关 键 词：PLASMA MISCIBLE MULTICOMPONENT Metal nanoparticle NANOCATALYSTS 

分 类 号：TQ246.31[化学工程—有机化工] TQ426[一般工业技术—材料科学与工程] TB383.1