Recently, Ye Sheng, a doctoral candidate of the Chinese Academy of Sciences, Chinese Academy of Sciences Institute of Catalysis, Dalian Institute of Chemical Physics, and the researcher of the Solar Energy Research Department, Li Can, and Ph.D. students, Ye Sheng, etc., obtained in the study of the simulation of natural photosynthesis to build an efficient artificial photosynthetic system. new progress. Based on the concept of bionics, researchers combined the partially oxidized graphene with the hole storage layer, greatly improved the photo-generated charge separation efficiency, and achieved efficient photoelectrocatalytic decomposition of water into hydrogen. Related research results have been published in full text. In the "American Chemical Society" (J. Am. Chem. Soc., 2018, DOI: 10.1021/jacs.7b10662), and was invited as the current cover article. The research team used BiVO4 semiconductors as light-harvesting materials and nickel-iron layered double hydroxides (NiFeLDH) that inhibited BiVO4 photo-etching as hole storage layers by simulating important functions of key components in Photosystem II (Angew. Chem. Int. Ed., 2014, 53, 7295; Energy Environ. Sci., 2016, 9, 1327). At the same time, the molecular Co cubane was used as a water oxidation catalyst to simulate the Mn4CaO5 oxygen evolution center in natural photosynthesis. The researchers found that partially oxidized graphene (pGO) acts as a charge transport medium between the light trapping material and the water oxidation catalyst, exhibiting a function similar to tyrosine (Tyr) in the natural photosystem II. The results show that the biomimetic system has high efficiency and high stability in photoelectrocatalytic water decomposition reaction, and the initial potential of water oxidation reaction is 0.17V, close to the theoretical value of thermodynamics, and is the lowest value reported in the literature. In addition, the photocurrent at 1.23V (VS.RHE) bias of the system is as high as 4.45mA·cm-2, and the solar energy to hydrogen energy conversion (STH) is greater than 2.0%. This work was followed by the research team's use of a semiconductor-catalyst coupled system for photocatalysis (J. Catal., 2016, 338, 168; J. Am. Chem. Soc., 2016, 138, 10726). New progress in the application of photoelectrocatalytic water splitting. The above work was supported by the 973 project of the Ministry of Science and Technology, the National Natural Science Foundation of China, the Strategic Leading Science and Technology Project of the Chinese Academy of Sciences, and the iChEM.