Synthesis of CoMoO4/Co9S8 network arrays on nickel foam as efficient urea oxidation and hydrogen evolution catalyst |
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| Affiliation: | 1. School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, People''s Republic of China;2. School of Science, North University of China, People''s Republic of China;1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China;2. Patent Examination Cooperation Hubei Center of the Patent Office, State Intellectual Property Office, Wuhan 430070, China;1. Chemical Engineering and Technology Institute, North University of China, Taiyuan 030051, PR China;2. Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan, PR China;1. School of Chemical Engineering and Technology, North University of China, Taiyuan, 030051, China;2. School of Environment and Safety, North University of China, Taiyuan, 030051, China;3. School of Science, North University of China, Taiyuan, 030051, China |
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| Abstract: | It is of high significance to design robust, low-cost and stable electrocatalysts for the urea splitting reaction under alkaline medium. In this communication, we present the exploitation of CoMoO4/Co9S8 which directly grown on nickel foam (CoMoO4/Co9S8/NF) as a robust and stable electrocatalyst for urea splitting. Such CoMoO4/Co9S8/NF (CMo:CS = 9:1) presents the lowest overpotential (172 mV@10 mAcm−2), which is better than that of CoMoO4/NF (185 mV@10 mAcm−2), CoMoO4/Co9S8/NF (CMo:CS = 8:2) (208 mV@10 mAcm−2), CoMoO4/Co9S8/NF (CMo:CS = 7:3) (270 mV@10 mAcm−2) and Co9S8/NF (286 mV@10 mAcm−2) for hydrogen evolution. In addition, The CoMoO4/Co9S8/NF (CMo:CS = 8:2) presents a superior long-term electrocatalytic stability, keeping its activity at 40 mAcm−2 for 13 h for urea oxidation. |
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| Keywords: | Nickel foam Electrocatalytic Urea splitting Durability |
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