文献类型：期刊文献

英文题名：Interfacial Active-Oxygen Transport in Inverse CuOx/Perovskite Catalysts for Low-Temperature CO Oxidation

作者：Wang, Yuying[1]; Zhao, Kun[2]; Zhu, Xing[3]; Qin, Langlang[4]; Wei, Hengyu[3]; Wu, Jiayi[5]; Xu, Yuxuan[6]; Zhao, Binhong[1]; Wang, Shuang[4]; Gao, Yunfei[1]; Wang, Fuchen[1]; Zhu, Minghui[5]

机构：[1] Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai, 200237, China; [2] Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China; [3] State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China; [4] College of Environment and Ecology, Taiyuan University of Technology, Jinzhong, 030600, China; [5] State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China; [6] School of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, China

年份：2026

卷号：18

期号：27

起止页码：37677

外文期刊名：ACS Applied Materials and Interfaces

收录：EI(收录号：20262921137208);Scopus(收录号：2-s2.0-105044909278)

语种：英文

外文关键词：Carbon monoxide - Catalyst activity - Copper oxides - Costs - Density functional theory - Design for testability - Gas adsorption - Inverse problems - Oxidation - Oxygen - Temperature

摘要：Developing earth-abundant catalysts for low-temperature carbon monoxide (CO) oxidation is important for next-generation emission control, particularly in industrial scenarios where precious-metal catalysts face cost and stability constraints. Here, we report an "inverse" catalyst architecture in which LaMn0.6Cu0.4O3 (LMCO) perovskite is integrated with CuOx-derived phases to form 80Cu-LMCO. The catalyst reaches a T90 of 60 °C for CO oxidation, outperforming conventional perovskite and copper oxide catalysts under comparable conditions. Unlike previously reported CuOx or perovskite catalysts, this system uses an inverse CuOx/perovskite architecture to spatially separate O2 activation from CO adsorption while coupling these processes through interfacial active-oxygen transport. In situ spectroscopy, 18O2 isotopic-exchange experiments, and density functional theory (DFT) calculations further support this pathway by showing that LMCO activates oxygen and provides labile oxygen species, whereas reduced Cu-containing phases provide CO adsorption sites and mediate oxygen transfer toward interfacial Cu+ species. This active-oxygen transport pathway provides a mechanistic basis for designing robust, low-cost catalysts for low-temperature oxidation reactions. ? 2026 American Chemical Society