Unveiling the critical role of TiO_(2)-supported atomically dispersed Cu species for enhanced photofixation of N_(2)to nitrate
作者机构：Key Laboratory of Photochemical Conversion and Optoelectronic MaterialsTechnical Institute of Physics and ChemistryChinese Academy of SciencesBejing 100190China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBejing 100049China School of Future TechnologyUniversity of Chinese Academy of SciencesBejing 100049China Department of Chemical EngineeringUniversity College LondonLondon WC1E7JEUnited Kingdom
出 版 物：《Fundamental Research》 (自然科学基础研究（英文版）)
年 卷 期：2024年第4卷第4期
页 面：934-940页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学]
基 金：Dong Li received his B.S.degree in materials chemistry from the China University of Petroleum(East China)in 2019.He is now a Ph.D.candidate in materials science at the Technical Institute of Physics and Chemistry Chinese Academy of Sciences.His research interests focus on the design and synthesis ofnanomaterials forphotocatalytic nitrogen fixation
主 题：N_(2) photofixation TiO_(2) Nitrate photosynthesis Cu species NO_(x),intermediates
摘 要：Nitrate products are widely used in manufacturing as crucial raw materials and *** traditional nitrate synthesis process involves high energy consumption and emission,thereby opposing the goals of zero-carbon emission and green ***,a sustainable roadmap for nitrate synthesis that uses green energy input,clean N sources,and direct catalytic processes is urgently required(e.g.,developing a novel photosynthesis system).Here,we synthesized TiO2-supported atomically dispersed Cu species for N_(2)photofixation to nitrate in a flow *** optimized photocatalyst yielded a high nitrate photosynthesis rate of 0.93μmol h-1 and selectivity of~90%,which is superior to most of the values reported thus ***,experimental results and in-situ investigations revealed that the atomically dispersed Cu sites in the as-designed sample significantly enhanced the separation and transfer efficiency of photogenerated carriers,adsorption and activation of reactants,and the formation of chemisorbed O_(x)intermediates,thereby realizing the excellent photofixation of N_(2)to nitrate.
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