纳米线
乙醇
电化学
催化作用
氧化磷酸化
化学
纳米颗粒
纳米结构
选择性
化学工程
贵金属
纳米技术
材料科学
电极
有机化学
生物化学
工程类
物理化学
作者
Yufeng Zhang,Wei Zhu,Jinjie Fang,Zhiyuan Xu,Yanrong Xue,Di Liu,Rui Sui,Qingqing Lv,Xuerui Liu,Yongsheng Wang,Wei Chen,Zhongbin Zhuang
出处
期刊:Nano Research
[Springer Nature]
日期:2021-12-04
卷期号:15 (4): 2987-2993
被引量:10
标识
DOI:10.1007/s12274-021-3930-x
摘要
Electrochemical upgrading of biomass ethanol to value-added chemicals is promising for sustainable society. Here, we synthesize defective Ni3S2 nanowires (NWs), which show high activity towards electrochemical oxidation of ethanol to acetate. The Ni3S2 NWs are formed by the oriented attachment mechanism, and rich defects are introduced during the growth. A low onset potential of 1.31 V and high mass activity of 8,716 mAmgNi−1 at 1.5 V are achieved using the synthesized Ni3S2 NWs toward the ethanol electro-oxidation, which are better than the Ni(OH)2 NWs and the Ni3S2 nanoparticles (NPs). And the selectivity for the acetate generation is ca. 99%. The high activity of Ni3S2 NWs is attributed to the easier oxidation of Ni(II) to the catalytically active Ni(III) species with the promotion from S component and rich defects. These results demonstrate that the defective NWs can be synthesized by the oriented attachment method and the defective Ni3S2 NWs structure as the efficient non-noble metal electrocatalysts for oxidative upgrading of ethanol.
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