Active {010} facet-exposed Cu2MoS4 nanotube as high-efficiency photocatalyst |
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| Authors: | Ke Zhang Yunxiang Lin Zahir Muhammad Chuanqiang Wu Shuang Yang Qun He Xusheng Zheng Shuangming Chen Binghui Ge Li Song |
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| Affiliation: | 1. National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, China;2. Beijing National Laboratory for Condensed Mater Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | Rational design and facet-engineering of nanocrystal is an effective strategy to optimize the catalytic performance of abundant and economic semiconductorbased photocatalysts.In this study,we demonstrate a novel ternary Cu2MoS4 nanotube with the {010} facet exposed,synthesized via a hydrothermal method.Compared with two-dimensional Cu2MoS4 nanosheet with the {001} facet exposed,this one-dimensional nanotube exhibits highly enhanced performance of photodegradation and water splitting.Both theoretical calculations and experimental results suggest that the conduction band minimum (CBM) of the {010} facet crystal shows lower potential than that of the {001} facet.In particular,the up-shifted CBM in Cu2MoS4 nanotube is significantly beneficial for the absorption of dye molecules and reduction of H+ to H2.These results may open a new route for realizing high-efficiency photocatalysts based on Cu2MX4 by facet engineering. |
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| Keywords: | nanotube facet control photodegradation watersplitting theoretical calculations |
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