文献类型：期刊文献

英文题名：Synthesis of Ceymn(1-Y)Ox Solid Solution Catalysts with Superior Photothermal Catalytic Performance for Acetone Removal Under Ambient Condition

作者：Wang, Xinkai[1]; Zhao, Bin[2]; Chen, Feng[1]

机构：[1] Key Laboratory for Advanced Materials, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China; [2] College of Materials Science and Engineering, Shenzhen University, 1066 Xueyuan Avenue, Guangdong Province, Shenzhen, 518055, China

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220124221)

语种：英文

外文关键词：Absorption spectroscopy - Acetone - Catalysis - Catalyst activity - Cerium - Cerium oxide - Manganese - Manganese compounds - Rate constants - Sol-gel process - Sol-gels - Temperature

摘要：Cerium-manganese solid solution catalysts were prepared by sol-gel method. X-ray diffraction, Raman, UV-Vis-IR diffuse reflectance spectroscopy, and H2 temperature programmed reduction (H2-TPR) were used to characterize the as-prepared catalysts. Introduction of Mn x+ into CeO2 lattice dramatically improved the full solar spectrum absorption ability, as well as the lattice oxygen mobility of the catalysts. The Ce0.25Mn0.75Ox catalyst presents much better low temperature reducibility due to the presence of readily reduced Mnx+ species in CeO2 lattice. Ce0.25Mn0.75Ox shows superior photothermal catalytic activity for the degradation of gaseous acetone under visible-infrared irradiation (150 mW/cm2), which gives a reaction rate constant of 11.0 times higher than that with MnOx. In the whole process, the air temperature in catalytic system never exceeds 42 °C, thus achieving efficient photothermal catalysis for acetone removal under ambient condition. This work provides an alternative strategy in environmental protection field for efficient volatile organic compounds removal in indoor environment. ? 2022, The Authors. All rights reserved.