A kind of preparation method of water-soluble carbon dot modified perovskite type catalytic material

Abstract

The invention relates to a method for preparing a water-soluble carbon point-modified perovskite-type catalytic material, which comprises the following steps: 1. Mix amino acids, alcohols, urea or citric acid in proportion, and stir evenly until a transparent low-eutectic Melt solvent; 2 Weigh the perovskite metal precursor, fuel and fuel additives, mix and stir to obtain the precursor mixed solution, and roast at 650~850°C for 3-6h to obtain the perovskite metal oxide catalyst; 3 Make the transparent Deep eutectic solvent and perovskite metal oxide catalyst mixed with deionized water; 4 reacted at 180-230°C for 3-7h; 5 cooled, washed and filtered; 6 dried at 80°C, and then calcined at 600°C 1 -3h. The present invention optimizes the physical and chemical properties of the surface of the perovskite-type catalytic material by adding carbon-containing precursors, namely amino acids, alcohols, and urea or citric acid, and the modified perovskite-type catalytic material can catalyze more efficiently degrade methane.

Description

technical field [0001] The invention belongs to the technical fields of chemical industry, environmental protection and catalytic materials, in particular, it relates to a preparation method of a modified perovskite type catalytic material. Background technique [0002] Organic matter is the main component of particulate matter in the urban environment, and is also the main component of PM and O 3 important precursors. Most of the industrial emission series of volatile organic compounds (VOCs) have obvious "three-caused" effects, becoming a "cancer" that affects the health of residents and a "bottleneck" that restricts the development of the national economy and environmental protection. With the tightening of national, local and industry VOCs emission standards, the deep mineralization of VOCs has become inevitable. [0003] The composition of VOCs is complex, and the gas velocity and concentration fluctuate greatly. Coupled catalyst purification technologies such as heat...

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Problems solved by technology

Although the introduction of ordered porosity can significantly improve the catalytic activity of metal oxides, the synthesis process is complex and uneconomical; other various wet chemical reaction processes, such as co-precipitation treatment, sol-gel, hydrothermal treatment of perovskite The material also has various disadvantages, for example, it is difficult to simultaneously control the precipitation of cations in the solution in the co-precipitation method, which often leads to the separation of components; sol-gel technology usually uses expensive metal alkoxides as raw materials; hydrothermal method usually requires a long time time response

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