Non-noble metal ultrathin MoS2 nanosheets modified Mn0.2Cd0.8S heterostructures for efficient photocatalytic H2 evolution with visible light irradiation |
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| Affiliation: | 1. School of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, PR China;2. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China;3. School of Applied Physics and Materials, Wuyi University, Jiangmen, Guangdong, 529020, PR China;1. Key Laboratory of Eco-Chemical Engineering, Key Laboratory of Rubber-Plastics of Ministry of Education, Qingdao University of Science and Technology, Qingdao, 266042, PR China;2. College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, PR China;3. School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, PR China;1. School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, North Minzu University, State Ethnic Affairs Commission, Yinchuan, 750021, PR China;2. College of Chemistry and Chemical Engineering, Jishou University, Jishou, Hunan, 416000, PR China;1. Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China;2. School of Material Science and Engineering, Zhengzhou University, Zhengzhou 450001, China;1. College of Chemistry and Material Science, Huaibei Normal University, Huaibei, Anhui 235000, China;2. Instrumental Measurement & Analysis Center, Fuzhou University, Fuzhou, Fujian 350002, China;3. Fujian Provincial Key Laboratory of Ecology?Toxicological Effects & Control for Emerging Contaminants, Putian University, Fujian 351100, China |
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| Abstract: | A series of non-noble metal ultrathin MoS2 nanosheets modified Mn0.2Cd0.8S heterostructured composites were prepared by an ultrasonic assisted hydrothermal synthesis process. Comparing with the pristine Mn0.2Cd0.8S composite, the obtained ultrathin MoS2/Mn0.2Cd0.8S composites exhibited a significantly improved photocatalytic activity for hydrogen evolution from water with visible light response. The optimized photocatalytic activity toward MoS2/Mn0.2Cd0.8S composite is around 8 times of the pristine Mn0.2Cd0.8S composite. Moreover, the ultrathin MoS2/Mn0.2Cd0.8S composites displayed good photocatalytic stability in the course of photochemical reaction. The excellent photocatalytic activity of the ultrathin MoS2/Mn0.2Cd0.8S composites might be attributed to the formed heterojunctions in composites itself and the sufficient active edge sites in MoS2 phase. A possible photocatalytic mechanism was tentatively proposed. Considering its excellent photocatalytic activity and good photochemical stability, the obtained ultrathin MoS2/Mn0.2Cd0.8S composite has potential application in photocatalytic hydrogen evolution from water by using solar energy. |
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| Keywords: | Hydrogen evolution Heterostructure |
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