| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Sol-gel Synthesis and Catalytic Property of La0.5Sr0.5Co0.8Mn0.2O3-δ Perovskite |
| MAO Weida1,2, ZHAO Lin1
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1 College of Environmental Sciences and Engineering, Tianjin University, Tianjin 300072, China
2 Beijing Orient Landscape Environment Co., Ltd, Beijing 100015, China |
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Abstract The La0.5Sr0.5Co0.8Mn0.2O3-δ nanoparticles were prepared by sol-gel calcinations synthesis. The samples were characterized by means of XRD, electron microscopy, X-ray photoelectron spectroscopy and iodometric titration. Tetrabromobisphenol A was used as model pollutant to investigate its catalytic performance. The results showed that the La0.5Sr0.5Co0.8Mn0.2O3-δ particles had R-3c perovskite structure with an average grain size of 40-70 nm. Compared with the samples calcined under nitrogen, the non-stoichiometric oxygen concentration of the samples calcined by weak oxidation were moderate, the average valence of overall B-site ions in perovskite structure was also relatively stable, and its catalytic performance was therefore strong and relatively stable, which can be recycled for 4 times.
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Published: 25 December 2021
Online: 2021-12-27
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| Fund:This work was financially supported by the National Natural Science Foundation of China (41728001,41572237) and the Tianjin Science and Technology Project (18ZXSZSF00240). |
| About author: Weida Mao, research assistant of Tianjin University, graduated from Beijing University of Chemical Techno-logy in 2020 with a master's degree in engineering. His research interests are development of catalytic materials and soil remediation technology. |
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2021, Vol. 35 
