Materials Reports  2021, Vol. 35 Issue (z2): 81-85 |
| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Improved Catalytic Ozone Degradation over Hydrothermal-treated Cobalt Phosphate |
| DU Guangzhi1,2, ZHANG Qian1, LIAO Jifei1, LIN Yu1, WU Fan1, XIANG Jianglai1, WANG Xiaoru1, ZHANG Ruiyang1
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1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China
2 The Center of New Energy Materials and Technology, School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China |
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Abstract Ozone pollution has gradually replaced PM 2.5 as the primary air pollutant,posing serious threaten to human health. Various approaches have thus been developed to resolve this problem. Among them, the catalytic decomposition technique has been extensively studied because of its environmentally friendliness, low energy consumption and low secondary pollution. Cobalt-based inorganic acid salts possessed abundant surface oxygen and exhibited excellent electron transport capabilities, possessing great potential in the ozone decomposition. In this study, different cobalt-based inorganic acid salts were prepared by a simple co-precipitation method and used as the catalysts for the ozone decomposition, among which the Co3(PO4)2 (G-CP) sample exhibits the highest performance. Subsequently, the G-CP sample was subjected to hydrothermal treatment for several hours for obtaining Hy-CP catalyst, and it was found that the activity and stability of ozone removal were significantly improved compared to G-CP. It is noting that 76% ozone removal rate can be maintained over Hy-CP-12 after 6 hours, which is 2.1 times higher than that of G-CP. The G-CP crystal structure and morphology will change with the hydrothermal process by XRD and SEM. BET XPS. In addition, the hydrothermal process significantly increases the specific surface area and surface oxygen content, which is conducive to the ozone decomposition, thereby improving the decomposition activity of G-CP.
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Published: 09 December 2021
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About author:: Guangzhi Du received his bachelor's degree from Southwest Petroleum University in 2018, and studied for his master's degree in Southwest Petroleum University from 2018 to 2021. He has been published one SCI academic paper.
Qian Zhang obtained his doctor degree from School of Materials Science and Engineering of Chongqing University in 2011, served as associate professor and master's supervisor in Southwest Petroleum University till now. His main research directions are indoor air purification, monolithic catalusis and electrochemistry. Now he is the scientific research backbone of “Oxidizing Functional Materials and Application” scientific research and innovation team of Sichuan universities and the “Energy Conversion and Storage of Advanced Materials” scientific and technological innovation team of Sichuan youth. He presided scientific research project of the National Natural Science Foundation, the State Key Laboratory and the Sichuan Enducation Department. He has published more than ten SCI academicpapers and won two national invention patents. |
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