 |
(a) Graphene-enhanced catalytic hydrogen evolution reaction on nickel surface; (b) Van der Waals force modified volcanic curve of hydrogen evolution catalytic activity on different metal surfaces; (c) Theoretical predictions of different metal surfaces after graphene overlay Hydrogen evolution catalytic activity volcano-type curve.
Recently, Dr. Chen Wei and Dr. Cui Ping of the Hefei National Laboratory for Microscale Materials Science and Technology, University of Science and Technology of China, have collaborated with their counterparts to make new progress in the study of two-dimensional material-constrained catalytic theory. It is predicted that the surface of graphene coated with nickel can become an ideal hydrogen generator. platform. The research results were published in the Nano Letters published on September 2nd. The co-first author was Zhou Yi-nong, a graduate of China University of Science and Technology and a postdoctoral researcher in the field of quantum information and quantum science and technology.
In recent years, Bao Xin and the research team of the Institute of Chemical Physics of the Chinese Academy of Sciences proposed the concept of restricted catalysis. On this basis, the research team of China University of Science and Technology further proposed the concept of critical catalysis, that is, to select inexpensive metal materials that already have a certain catalytic activity, and to introduce a limited catalyst through the modification of two-dimensional materials, thereby greatly accelerating the rate of hydrogen generation. By first-principles calculations, the team found that when hydrogen atoms are at the interface between graphene and different metals, their adsorption energy is somewhat reduced compared to metals that are not covered with graphene. Particularly outstanding is that the adsorption energy of the metal nickel surface is controlled by graphene, and its corresponding hydrogen evolution ability is regulated to the vicinity of the peak of the volcano-type curve, and becomes a catalyst material having high catalytic activity. At the same time, calculations show that the diffusion rate of hydrogen at the interface is still very fast, and this property also ensures the rapid collection of products. The research provides new ideas for the cheap preparation of clean energy hydrogen and other industrially important chemical reactions.
The above research was funded by the Committee, the Chinese Academy of Sciences, the Ministry of Science and Technology, and the Ministry of Education.
Bestware Touchless 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 Pre-rinse 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.
Touchless Faucet,Kitchen Sink Faucets,Utility Sink Faucet,Sink Tap
Bestware Hardware Production Co., Ltd. , https://www.bestwarefaucets.com