 |
The research results are published on the cover title in "Environmental and Environmental Science"
Recently, Du Pingwu, a professor at the University of Science and Technology of China, designed and developed a non-precious metal visible light catalytic hydrogen production system with high conversion rate. The research results were published in the form of a cover title in "Energy and Environment Science." The first author of the thesis is Sun Zijun, a postgraduate of the research group.
Traditional oil and fossil energy consumption has caused problems such as global warming, environmental pollution, and energy shortages. This is a major challenge for humanity. Under this background, low-carbon economy based on low energy consumption and low pollution is becoming a global concern and research hotspot. As an efficient and clean secondary energy carrier, hydrogen is considered to be an important clean energy source for humanity in the future. Therefore, the development and use of pollution-free hydrogen energy is an important way to achieve a low-carbon economy. The development of pollution-free, low-cost hydrogen production technology has increasingly attracted the attention of countries. By designing an efficient and low-cost photocatalytic system to absorb light and decompose water to make hydrogen, people have seen the possibility of converting solar energy into hydrogen energy.
The research group found that transition metal phosphides as co-catalysts have a good photocatalytic property for hydrogen production. The phosphides such as cuprous phosphide and molybdenum phosphide are supported on semiconductors, which can effectively enhance the photocatalytic hydrogen production of semiconductors. Efficiency (J. Mater. Chem. A, 2015, 3, 10243-10247; J. Mater. Chem. A, 2015, 3, 16941-16947). Based on the previous work, the research team used solvothermal method to subtly load the new Ni2P co-catalyst on the CdS semiconductor, resulting in a uniformly distributed and tightly contacted Ni2P/CdS composite structure. The experimental data and spectral characterization demonstrated the structure energy. Effectively promote the transfer of CdS photogenerated electrons, thereby inhibiting the recombination of electron-hole pairs and improving the photocatalytic hydrogen production performance. By adding an electron acceptor combined with ultrafast transient spectroscopy, the reaction mechanism of the photocatalytic process was studied and a rapid electron transfer process was discovered. In the presence of Na2S/Na2SO3 electron donors, the catalysts achieve efficient photocatalytic hydrogen production (the rate of hydrogen production is 1,200 μmol h-1 mg-1, and the number of transitions within 90 hours reaches -3270000,TOF ~36,400 h- 1 for Ni2P). Due to the low price of raw materials, excellent performance, and simple preparation, the application of this material to an efficient photocatalytic hydrogen production system shows important research prospects.
The above research work was supported by the thousands of young people of the Central Organization Department, the Collaborative Innovation Center for Energy Materials, the National Natural Science Foundation of China, and the talents of the new century.
Villa Elevator,Villa Lift,Villa House Elevator,Villa House Lift
Homefriend&FUJI Elevator Co.,Ltd , https://www.jfujilift.com