双金属片
纳米线
材料科学
纳米材料
光热治疗
表面等离子共振
纳米颗粒
纳米技术
贵金属
纳米晶
化学工程
等离子体子
光电效应
金属
光电子学
冶金
工程类
作者
Qi Xue,Hao Huang,Jingyi Zhu,Yue Zhao,Fu-Min Li,Pei Chen,Yu Chen
标识
DOI:10.1016/j.apcatb.2020.119269
摘要
Optimizing morphology, structure, and composition of noble metal bimetallic nanomaterials not only enhances their electroactivity and stability but also expands their scope of application. In this work, ultrafine bimetallic [email protected] core-shell nanowires ([email protected] ultra-NWs) are synthesized by simple wet chemical strategy using ultrafine Au nanowires (Au ultra-NWs) with 5.50 nm diameter as substrate and explore their potential application for hydrazine electro-oxidation reaction (HeOR) in an alkaline solution. Experimental and calculational results demonstrate that bimetallic [email protected] ultra-NWs with optimal component reveal 13.6-fold Rh-mass activity enhancement for HeOR at 0.4 V potential relative to commercial Rh nanocrystals (Rh c-NCs), which can be ascribed to the ultrathin Rh shell thickness and the electronic effect caused by the interaction between Au core and Rh shell. Under light irradiation conditions, bimetallic [email protected] ultra-NWs further show plasmon-promoted HeOR activity, which originates from photoelectric and photothermal effects caused by localized surface plasmon resonance of Au ultra-NWs core.
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