The research group of Professor Hu Yong of Zhejiang Normal University has made a breakthrough in the design and preparation of a new type of highly efficient photocatalyst for photolysis of aquatic oxygen

Recently, Professor Hu Yong's research group of Zhejiang Normal University made a breakthrough in the design and preparation of a new type of highly efficient photochemical aquatic oxygen catalyst The related achievements were published on ACS catalyst (DOI: 10.1021/acscatal.8b03819 ）。 Liu Huanhuan, a 2016 graduate student, is the first author of this article, and Zhejiang Normal University is the only corresponding author Solar energy is regarded as an ideal energy to solve energy and environmental problems because of its inexhaustible renewable energy characteristics, clean and pollution-free The use of photocatalysis technology to convert solar energy into non polluting, efficient and storable hydrogen, hydrocarbon fuel and other chemical energy has become an important research direction of energy development in the future Due to the complex four electron transfer and chemical kinetics of O-O bond formation, the oxygen production process of water photolysis is faced with Therefore, oxygen production reaction has become a research hotspot in the field of photodegradation water Recently, Hu Yong's group has realized Pt nanocrystalline loading and Pt 2 + Doping on the surface and inside of α - Fe 2O 3 nano chips by one-step solvothermal method This method also has universality, and can be used to load and dope different metal nanocrystals and metal ions on the surface of α - Fe 2O 3 nano chip in one step The results show that the Pt-O bond formed by the doped Pt 2 + and the o in the system is more conducive to the formation of hybrid states than the Fe-O bond, so it can significantly improve the separation efficiency of photogenerated electrons and holes in the α - Fe 2O 3 nano chip At the same time, the surface Loaded Pt nanocrystal and the semiconductor α - Fe 2O 3 nano chip form a Schottky barrier, which greatly reduces the photogenerated electrons- Hole pair recombination Compared with the pure α - Fe 2O 3 nanoflakes, the prepared products show excellent visible light hydroxidation activity and stability The above work has been supported by NSFC and NSFC of Zhejiang Province.