Chinese Academy of Sciences successfully developed functional perovskite oxide porous membrane and energy-saving regeneration technology

Recently, good news came from Qingdao Institute of Bioenergy and Process, Chinese Academy of Sciences. The research team of the membrane separation and catalysis research group of the Institute successfully developed a functional perovskite oxide porous membrane and energy-saving regeneration technology Important scientific and technological achievements in development and its catalytic-membrane separation performance research.

Biological pollutants such as algae and a wide variety of organic pollutants often exist in natural waters. In the evaporation process driven by sunlight, pollutants will be enriched and grown in the photothermal film, resulting in film pollution, resulting in a decrease in the performance of the film material. High temperature degradation can effectively remove biological and organic pollutants, and is an ideal means to achieve membrane regeneration. However, the thermal decomposition process of pollutants requires higher temperatures, which will cause huge energy consumption. Reducing the combustion decomposition temperature of pollutants can effectively reduce energy consumption, achieve energy-saving regeneration of membrane materials, and promote the application of photothermal materials in actual water environments.

Researcher Jiang Heqing, head of the Membrane Separation and Catalysis Research Group at the Qingdao Institute of Bioenergy and Processes, Chinese Academy of Sciences, proposed that at the same time, the use of cobalt-based perovskite catalysts and photothermal properties to develop a multi-functional perovskite oxide porous membrane. Under the guidance of this idea, associate researcher Wang Yuchao of the research group developed a perovskite oxide La0.7Sr0.3CoO3 (LSCO) porous membrane. In the test using algae and melamine as pollutants, the LSCO porous membrane significantly reduced the combustion decomposition temperature of the pollutants attached to it, and reduced the regeneration energy consumption of the porous membrane during the combustion process, achieving the purpose of energy conservation and regeneration. Due to the high thermal stability of the LSCO porous membrane, its performance is basically unaffected after multiple membrane regeneration cycles.

This work skillfully utilizes the photothermal and catalytic properties of perovskite oxides to solve the biological pollution problem of photothermal films in practical applications. (Reporter Wang Jiangao correspondent Liu Jia)

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