Electro-reduction of cuprous chloride powder to copper nanoparticles in an ionic liquid |
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| Institution: | 1. College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China;2. School of Chemical, Environmental and Mining Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom;1. School of Resource and Environmental Sciences, Wuhan University, Wuhan 430072, PR China;2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 10016, PR China;3. Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA;1. Department of Nano Science and Engineering, Center for Nano Manufacturing, Inje University, Obang-dong, Gimhae, Gyeongnam 621-749, Republic of Korea;2. Department of Materials and Components Engineering, Dong-Eui University, 995 Eomgwangno, Busanjin-gu, Busan 614-714, Republic of Korea;1. State Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao, 066004, PR China;2. Hebei Key Laboratory of Applied Chemistry, Department of Environment and Chemistry, Yanshan University, Qinhuangdao, 066004, PR China;3. Henan Huanghe Whirlwind Co. Ltd., Changge, 461500, PR China |
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| Abstract: | Cyclic voltammetry of the CuCl powder in a cavity microelectrode revealed direct electro-reduction in solid state in 1-butyl-3-methylimidazolium hexafluorophosphate. Potentiostatic electrolysis of the salt powder (attached to a current collector) in the ionic liquid produced Cu nanoparticles as confirmed by X-ray diffraction, energy dispersive X-ray analysis, scanning and transmission electron microscopy. The particle size decreased down to 10 nm when the electrode potential was shifted from ?0.9 V to ?1.8 V (versus Ag/Ag+). The electro-reduction and the nanoparticle formation mechanisms were investigated in the ionic liquid and also in aqueous 0.1 mol L?1 KClO4 in which larger Cu particles were obtained. |
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