Graphite phase carbon nitride (g-C3N4) is a new type of non-metallic photocatalytic material, which has a certain light absorption in the visible light range, and also has good thermal stability, chemical stability and light stability, and is widely used. Applied to photocatalytic hydrogen production, water oxidation, organic degradation, photosynthesis, and carbon dioxide reduction. Zhang Tie-rui, a researcher at the Institute of Physics and Chemistry, Chinese Academy of Sciences, has focused on the controllable design of nanomaterials and the research of photoelectrocatalytic properties for many years. In the early stage, nitrogen-doped porous carbon nanosheets were successfully designed and prepared by using g-C3N4 as a template agent for electrocatalytic oxygen reduction. The aspect demonstrated excellent performance (Adv. Mater. 2016, 28, 5080). However, in the photocatalytic process, g-C3N4 still has a wide band gap and is difficult to make full use of visible light, and photoelectron-hole recombination is serious. Recent studies have shown that the direct introduction of nitrogen defects in the framework of g-C3N4 is one of the effective ways to solve the above problems. However, the reported methods for introducing nitrogen defects generally require severe reaction conditions and involve multiple-step operation processes, and the degree of defects is difficult to control and is often uneven surface defects, which greatly reduces the improvement of photocatalytic activity. Therefore, how to prepare g-C3N4 with controllable degree of nitrogen defects through a simpler way and further improve its photocatalytic activity is of great significance. Recently, on the basis of the previous work on g-C3N4, the research group has developed a novel alkali-assisted synthesis method to successfully prepare nitrogen-defective graphite phase carbon nitride nanosheets with good visible light absorption characteristics and photoproduction. The electron-hole separation capability greatly increases the photocatalytic hydrogen production rate. By controlling the addition of alkali in the synthesis, a series of different nitrogen defect concentrations of g-C3Nx are obtained. The bandgap of the g-C3Nx can be gradually narrowed with the increase of defect concentration, and can be precisely controlled through the change of the raw material ratio. The band gap of g-C3Nx can be reduced by approximately 0.3 eV compared to samples without nitrogen defects, and therefore has better visible light absorption capability. The absorption spectrum shows a global red shift, demonstrating that this one-step base-assisted synthesis method can form uniform bulk nitrogen defects, and has more outstanding light-absorbing properties than surface defects formed by other multi-step processing methods. In addition, the introduction of nitrogen defects contributes to the separation of photoelectron-hole pairs, and surface nitrogen vacancies can also capture photogenerated electrons and serve as active sites for photocatalytic reactions, ultimately resulting in a dramatic increase in the rate of hydrogen generation catalyzed by visible light. The relevant research results were published in the international journal Adv. Mater. 2017 (DOI: 10.1002/adma.201605148) and were selected as the cover of the journal to highlight readers. Subsequently, the international science media Advanced Science News highlighted the study with the title Nitrogen Defects in 2D Graphitic Carbon Nitride for Water Splitting. It is reported that this method of in-situ introduction of nitrogen defects at the time of synthesis has a good universality, not only provides a new idea for the controlled synthesis of g-C3N4, but also provides an in-depth study of the role of defects in 2D semiconductor catalytic materials. The character created better conditions. Relevant research work has been supported by the National Key Basic Research Program of the Ministry of Science and Technology, the National Science Foundation of China's Outstanding Young Scientists Fund, the National Natural Science Foundation of China Youth Fund Project, the National Million People Plan - Youth Top Talent Support Program, and the Chinese Academy of Sciences' Strategic Leading Science and Technology Project ( B) support. Bestware Pre-rinse Faucet brings the fine design and high technology together in all areas of the product process beyond Pull Out Faucet, Commercial Faucet and Commercial Kitchen Faucet. With extensive range of components, we can offer a large selection of both standard Kitchen Faucet and custom Basin Tap units as well as flexible combination. Stainless steel is 100% recyclable and is comprised of over 60% recycled material, Bestware faucets are the perfect solution in the commercial and industry for better water quality and the circumvention of the development of deleterious substances and bacteria. No plating, no oxidizing, no rust, lead free. Pre-Rinse Faucet,Pre Rinse Kitchen Faucet,Pre Rinse Tap,Pre Rinse Unit Bestware Hardware Production Co., Ltd. , https://www.bestwaremfg.com