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Recently, Professor Zhou Zhen and the team of Nankai University School of Materials Science and Engineering have found that visible light decomposes water to catalyze the design of materials and have made important progress in the study of catalytic materials that use visible light to decompose water. This research has important application prospects for solving the energy crisis and environmental pollution problems by using solar energy to decompose water to produce efficiency.
Photolysis water refers to the decomposition of water into hydrogen and oxygen under the irradiation of sunlight, which is an effective method of using solar energy. Among them, photolysis of water catalysts plays a crucial role. Existing photo-reducing water catalysts are generally active in the ultraviolet region, while ultraviolet light only accounts for 4% of the total sunlight energy. Most of the sunlight energy is in the visible region. At present, there are few international applications for the use of solar water to obtain clean energy. Therefore, the development of a visible light decomposition water catalyst can greatly increase the efficiency of solar energy utilization.
Due to its characteristics, two-dimensional layered materials are more active for photolysis of water and are ideal for photolysis of water catalysts. The search for two-dimensional materials that can absorb visible light has become an important issue. Zhou Zhen led the team for many years on the basis of two-dimensional material research, dedicated to the search for water photocatalysts with visible light activity, through theoretical calculations, studied a variety of layered perovskite materials, found how to absorb visible light efficiently and The design law of the catalyst for decomposing water uses this rule to study and design the two-dimensional material Ca5V4O15, which is a potential photocatalytic water photocatalyst with visible light activity. The relevant results were published in Nano Energy 2016 (28, 390, original link: http://dx.doi.org/10.1016/j.nanoen.2016.08.064). Zhou Zhen is the author of the correspondence.
In addition, under the guidance of this law, the team also found that layered metal phosphorus sulfur compounds (MPS3, M = Fe, Mn, Ni, Cd, Zn) and metal phosphorus selenium compounds (MPSe3, M = Fe, Mn) are also expected to be used as Visible light decomposes the water catalyst. The team selected MnPSe3 to have a strong absorption peak in the visible light region, which can decompose water in an acidic and neutral environment to produce hydrogen and oxygen. It is the best photocatalytic water photocatalytic activity catalyst. This result indicates the direction of efforts for the development of visible light decomposable water two-dimensional catalytic materials. Relevant research results were published in Advanced Sciences 2016 (3, 1600062, link to the original: http://dx.doi.org/10.1002/advs.201600062), and entered the top ten of the monthly original paper download list. name. Zhou Zhen is the author of the correspondence. The journal was first published in December 2014 and is the latest top-level journal created by Wiley Press.
The above research has been funded by the National Natural Science Foundation of China's Innovative Research Group Fund and the Ministry of Education Innovation Team Project. (Reporter Ma Chao)
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