Recently, the researcher of the Department of Solar Energy Research of the State Key Laboratory of Catalysis and the National Laboratory of Clean Energy of the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Li Can, a member of the Chinese Academy of Sciences, and Zhang Fuxiang and Chen Shanshan have collaborated with the Kazunari Domen Research Group of the University of Tokyo in Japan. Visible light-driven photocatalytic Z mechanism progresses in the complete decomposition of water to hydrogen production. The results show that the MgTa2O6-xNy/TaON heterojunction material synthesized in one step of nitriding (the longest absorbable wavelength is up to 570 nm) can effectively promote photo-induced charge separation. Based on this heterojunction material, the broad spectrum response Z mechanism is completely established. Decomposition of water to produce hydrogen system, the apparent quantum efficiency of the highest reported in the current literature (AQE: 6.8% @ 420 nm). The results were published online in the journal German Applied Chemistry. The photocatalytic decomposition of water to hydrogen is one of the ideal ways to fundamentally solve the energy crisis and environmental pollution, and the development and application of broad spectrum-responsive semiconductor materials are the premise and basis for the efficient photochemical conversion of solar energy. In recent years, the Li Can team has been devoted to the development of a novel broad-spectrum-responsive semiconductor material. Through a series of layered or tunnel-shaped wide bandgap semiconductor materials doped with nitrogen, effective broad-spectrum absorption and utilization have been achieved, and confirmed experimentally. The feasibility of photocatalytic decomposition of water materials for such novel semiconductors has been discussed (J. Mater. Chem. A, 2013, 12, 5651; Chem. Commun., 2014, 50, 14415; Chin. J. Catal., 2014, 35 , 1431). However, such semiconductor materials still have the problem of low photo-carrier separation efficiency. Based on this, the team has always attached importance to the development and construction of strategies such as heterojunction, heterojunction, and even inter-plane charge separation to increase the photo-generated charge separation efficiency of materials from the source. Recently, they further designed and developed a new nitridation synthesis strategy and succeeded in constructing a MgTa2O6-xNy/TaON heterojunction structure based on nitrogen-doped compounds and oxynitrides, which can significantly improve the separation efficiency of photogenerated charges and the photocatalytic Z mechanism. Decomposition of water to hydrogen production, obtained in the literature reported powder photocatalytic Z mechanism of the highest apparent quantum efficiency of decomposition water system. This study not only provided a new method for the construction of heterogeneous structures, but also opened a chain from the development of new materials to the complete decomposition of water to hydrogen, which laid the foundation for further development of high-efficiency visible light complete decomposition of water to hydrogen production. The research was funded by the Fund's major funds, the A3 International Cooperation Fund, the "973" Project of the Ministry of Science and Technology and the "100-person Plan" selection project of the Chinese Academy of Sciences. Iron Pyrite,Ferro Sulphur,Ferro Sulphur Noble Alloy,Fes Noble Alloy Anyang Xinyi Alloy Co.,Ltd. , https://www.xyferroalloy.com
Dalian Institute of Chemical Industry, Broad Spectrum Response, Photocatalytic Decomposition, Water Hydrogen, Advancement