Highly Dense Cu Nanowires for Low-Overpotential CO2 Reduction

Nano Letters
David RacitiChao Wang

Abstract

Electrochemical reduction of CO2, an artificial way of carbon recycling, represents one promising solution for energy and environmental sustainability. However, it is challenged by the lack of active and selective catalysts. Here, we report a two-step synthesis of highly dense Cu nanowires as advanced electrocatalysts for CO2 reduction. CuO nanowires were first grown by oxidation of Cu mesh in air and then reduced by either annealing in the presence of hydrogen or applying a cathodic electrochemical potential to produce Cu nanowires. The two reduction methods generated Cu nanowires with similar dimensions but distinct surface structures, which have provided an ideal platform for comparative studies of the effect of surface structure on the electrocatalytic properties. In particular, the Cu nanowires generated by electrochemical reduction were highly active and selective for CO2 reduction, requiring an overpotential of only 0.3 V to reach 1 mA/cm(2) electrode current density and achieving Faradaic efficiency toward CO as high as ∼60%. Our work has advanced the understanding of the structure-property relationship of Cu-based nanocatalysts, which could be valuable for the further development of advanced electrocatalytic materials ...Continue Reading

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Citations

Oct 14, 2016·Nano Letters·Tina Saberi SafaeiEdward H Sargent
Dec 16, 2016·Journal of the American Chemical Society·Myung Jun KimBenjamin J Wiley
Dec 17, 2016·The Journal of Physical Chemistry Letters·André EilertAnders Nilsson
Jun 24, 2017·Journal of the American Chemical Society·Qing TangDe-En Jiang
Aug 15, 2017·Angewandte Chemie·Zhe WengHailiang Wang
Jul 28, 2019·Chemistry, an Asian Journal·Anxiang GuanGengfeng Zheng
Aug 28, 2019·Nanoscale·Michelle MuzzioShouheng Sun
Sep 29, 2019·Chemical Communications : Chem Comm·Senlin ChuZhenyu Sun
Jan 7, 2020·Physical Chemistry Chemical Physics : PCCP·Aamir Hassan ShahTao He
Apr 3, 2020·Chemical Society Reviews·Panagiotis Trogadas, Marc-Olivier Coppens
Apr 28, 2020·Angewandte Chemie·Anthony VasileffShi-Zhang Qiao
Apr 22, 2020·Chemistry : a European Journal·Zhao-Qing LiuXiao-Tong Wang
Mar 7, 2020·Proceedings of the National Academy of Sciences of the United States of America·Gayea HyunSeokwoo Jeon
Aug 7, 2019·Chemistry : a European Journal·Mengwei YuanShelley D Minteer
Jun 24, 2017·Nanotechnology·Ki Dong YangKi Tae Nam
Mar 6, 2018·Chemical Communications : Chem Comm·Jiangtian LiDeryn Chu
Oct 24, 2019·Nature Communications·Tao-Tao ZhuangEdward H Sargent

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