PdPtBi networked nanowires derived from Pd nanosheets as efficient catalysts for ethanol oxidation
作者机构：State Key Laboratory of Silicon Materials and School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China Zhejiang Provincial Key Laboratory of Power Semiconductor Materials and DevicesZJU-Hangzhou Global Scientific and Technological Innovation CenterHangzhou 311200China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2023年第16卷第7期
页 面：9125-9131页
核心收录：
学科分类：07[理学] 070205[理学-凝聚态物理] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学]
基 金：This work was supported by National Program for Support of Topnotch Young Professionals,National Key R&D Program of China(No.2018YFB2200102) Foundation for Innovative Research Groups of the National Natural Science Foundation of China(No.61721005) the Fundamental Research Funds for the Central Universities(Nos.226-2022-00200 and 226-2022-00250).
主 题：trimetallic palladium platinum network nanowire ethanol oxidation
摘 要：Direct ethanol fuel cells(DEFCs)have received increasing attention as one of the most promising energy conversion devices.However,developing catalysts with high activity,long durability and strong anti-poisoning ability for ethanol oxidation is still challenging.Here,using Pd nanosheets as sacrificial templates,we have successfully synthesized PdPtBi networked nanowires(NWs)to improve the activity and stability for ethanol oxidation reaction(EOR)due to the addition of Bi.Density functional theory(DFT)calculations demonstrated the downshift of d-band center of Pd,which is beneficial to suppress CO poisoning and boost reaction kinetics for EOR.Impressively,the PdPtBi networked NWs exhibited the highest activity(11.08 A·mg_(Pd+Pt)^(-1)and 92.52 mA·cm^(-2))with an enhancement of 4.4 and 17.5 times relative to those of Pd/C,respectively and best stability with a 47.2%left versus only a 5.8%left for Pd/C of mass activity after 3,600 s towards EOR.This work deepens the understanding of controllable preparation of networked NWs and provides an effective strategy to design advanced catalysts with high activity and stability.
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