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The invention discloses an S-type heterojunction photocatalyst of FMO (at) F and M-ZIS as well as a preparation method and application of the S-type heterojunction photocatalyst. According to the invention, the S-type heterojunction photocatalyst of Fe and Mo co-doped ZnIn2S4 coated FeMoO4 (FMO (at) F and M-ZIS) can be prepared without using a template agent and a surfactant. The catalyst can take tetracycline hydrochloride as a pollutant (40 ppm), the degradation efficiency of the catalyst can reach 100% under a 10 W LED lamp for 20 min, and the degradation rates of high performance liquid chromatography and three-dimensional fluorescence detection are 100% and 97.4% respectively.

The application relates to the technical field of dehumidification materials, and provides a preparation method of a composite aerogel dehumidification material and the composite aerogel dehumidification material prepared by the method. The preparation method comprises the following steps: preparing an aerogel material from wood nanocellulose, a polyamide acid salt solution and deionized water; and then compounding the aerogel with a hygroscopic salt solution. The obtained composite aerogel dehumidification material has a hygroscopic effect higher than that of existing molecular sieves and silica gel.

This application discloses a method for preparing a graphene / carbon nanotube composite slurry and its application, relating to the field of electrochemical sensing. The method includes: S1, placing multi-walled carbon nanotubes in concentrated sulfuric acid, reacting, washing with deionized water until neutral, and drying to obtain carboxylated carbon nanotubes; S2, adding the carboxylated carbon nanotubes to thionyl chloride, stirring the reaction, rinsing with tetrahydrofuran, and drying to obtain acyl chloride-based carbon nanotubes; S3, mixing the following components: 4.0-6.0% multi-walled carbon nanotubes, graphene microsheets... 0.2-1.0%, dispersant 0.5-1.0%, melamine 3.0-6.0%, balance NMP; S4, add graphene oxide / carbon nanotube filter material to dilute hydrochloric acid solution for acid washing and purge with nitrogen bubbles, stir evenly, filter, dry, and repeat 4 times. Mix and disperse each component in N-methylpyrrolidone to improve the uniformity of the mixture. Carbon nanotubes and graphene microsheets are uniformly dispersed in NMP to reduce the possibility of agglomeration and break up the already agglomerated groups.

The embodiment of the invention relates to an efficient lithium supplement material and a preparation method and application thereof, and the preparation method comprises the following steps: placing a lithium source material, a carbon source material, conductive carbon and a solvent in stirring equipment, and uniformly stirring and mixing to obtain a mixed solution; drying the mixed solution in drying equipment, and removing the solvent to obtain an intermediate material; placing the intermediate material in sintering equipment in an inert gas environment, and performing pre-sintering treatment to form a core material; and continuously sintering the core material in the sintering equipment, introducing carbon-containing gas into the sintering equipment, keeping the temperature for a certain time, forming a carbon coating layer on the surface of the core material, cooling to room temperature, and discharging to obtain the efficient lithium supplementing material. When the efficient lithium supplement material prepared by the preparation method is applied to the lithium ion battery, the lithium ion battery can have higher capacity and better rate capability.