High Rate Production of Clean Water Based on the Combined Photo‐Electro‐Thermal Effect of Graphene Architecture |
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| Authors: | Linfan Cui Panpan Zhang Yukun Xiao Yuan Liang Hanxue Liang Zhihua Cheng Liangti Qu |
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| Affiliation: | 1. Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education of China, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China;2. Key Laboratory for Advanced Materials Processing Technology, Ministry of Education of China, State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing, P. R. China |
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| Abstract: | The use of abundant solar energy for regeneration and desalination of water is a promising strategy to address the challenge of a global shortage of clean water. Progress has been made to develop photothermal materials to improve the solar steam generation performance. However, the mass production rate of water is still low. Herein, by a rational combination of photo‐electro‐thermal effect on an all‐graphene hybrid architecture, solar energy can not only be absorbed fully and transferred into heat, but also converted into electric power to further heat up the graphene skeleton frame for a much enhanced generation of water vapor. As a result, the unique graphene evaporator reaches a record high water production rate of 2.01–2.61 kg m?2 h?1 under solar illumination of 1 kW m?2 even without system optimization. Several square meters of the graphene evaporators will provide a daily water supply that is enough for tens of people. The combination of photo‐electro‐thermal effect on graphene materials offers a new strategy to build a fast and scalable solar steam generation system, which makes an important step towards a solution for the scarcity of clean water. |
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| Keywords: | clean water generation desalination graphene architecture high rate production photo‐electro‐thermal effect |
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