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An efficient ternary Mn0.2Cd0.8S/MoS2/Co3O4 heterojunction for visible-light-driven photocatalytic H2 evolution
Affiliation:1. College of Chemistry, Zhengzhou University, Zhengzhou 450001, PR China;2. College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, PR China;1. School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, 750021, PR China;2. Ningxia Key Laboratory of Solar Chemical Conversion Technology, North Minzu University, Yinchuan, 750021, PR China;3. Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan, 750021, PR China;1. College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, China;2. College of Chemistry and Chemical Engineering, Neijiang Normal University, Neijiang, Sichuan 641100, China;3. Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, PR China;4. Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan Guangdong 523808, China;1. School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China;2. State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, North Minzu University, Yinchuan 750021, PR China;1. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;2. School of Physics, Shandong University, Jinan 250100, China
Abstract:An efficient ternary Mn0.2Cd0.8S/MoS2/Co3O4 heterojunction was prepared and displayed excellent photocatalytic performance. The ternary Mn0.2Cd0.8S/MoS2/Co3O4 heterojunction with 0.62 wt% of MoS2 and 1.51 wt% of Co3O4 achieved the highest H2 evolution activity (16.45 mmol g?1 h?1), which was well above Mn0.2Cd0.8S (2.72 mmol g?1 h?1). The improved H2 evolution activity was ascribed to the synergistic effect of the Mn0.2Cd0.8S/Co3O4 p–n heterojunction and the modification of MoS2 as a co-catalyst. This work can offer a new perspective for the application of MnxCd1?xS-based ternary heterojunction towards solar energy conversion.
Keywords:P–n heterojunction  Co-catalyst modification
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