Abstract: A method for preparing a supported catalyst, including mixing waste lithium battery cathode material and biomass uniformly to obtain a mixture, then putting the mixture into a tube furnace for nitrogen purging, and then heating and calcining to obtain a solid sample after carbothermal reduction treatment; hydrothermal stirring the solid sample, followed by filtration to recover a residue, and drying the residue to obtain a mixed sample of Co3O4, TiO2, and biochar, labeled as TCO; ultrasonically dispersing the attapulgite in an acid solution, stirring in a water bath at 80° C.

Abstract: A method for preparing two-dimensional sheet-like Li4SiO4 sorbent, including: obtaining LiCoO2 by performing discharging, aluminum foil stripping, and sieving on waste lithium battery cathode material, and drying; obtaining biomass by freeze-drying waste biomass, and grinding and sieving the freeze-dried waste biomass; mixing LiCoO2 and the biomass uniformly to obtain a mixture, and putting the mixture into a tube furnace for nitrogen purging, heating and calcination, and carbothermal reduction to obtain a solid sample, hydrothermal stirring the solid sample, followed by filtering, and evaporating to obtain Li2CO3; ultrasonically dispersing the attapulgite in an acid solution, and stirring in a water bath at 80° C.

Abstract: The present disclosure provides a honeycomb catalyst for catalytic oxidative degradation of VOCs prepared by an ultrasonic double-atomization process.

Abstract: The present disclosure provides a honeycomb catalyst for catalytic oxidative degradation of VOCs prepared by an ultrasonic double-atomization process.

Abstract: A method for preparing a silicate/carbon composite from attapulgite, and use of the silicate/carbon composite are disclosed. The preparation method includes: (1) with attapulgite as a raw material, preparing SiO2 with a special structure; (2) dispersing the prepared SiO2 in water to obtain a suspension, and subjecting the suspension to ultrasonic dispersion; dissolving a metal nitrate in the suspension, adding NH4Cl, and adding ammonia water dropwise to the suspension; and adding sucrose to obtain a suspension; (3) subjecting the suspension to microwave hydrothermal reaction; after the reaction is completed, centrifuging a resulting system; and separating a resulting solid; and (4) subjecting the solid to high-temperature calcination in a muffle furnace, and grinding a resulting product to obtain the silicate/carbon composite, which can be used in photocatalytic ammonia synthesis.

Abstract: A method for preparing a silicate/carbon composite from attapulgite, and use of the silicate/carbon composite are disclosed. The preparation method includes: (1) with attapulgite as a raw material, preparing SiO2 with a special structure; (2) dispersing the prepared SiO2 in water to obtain a suspension, and subjecting the suspension to ultrasonic dispersion; dissolving a metal nitrate in the suspension, adding NH4Cl, and adding ammonia water dropwise to the suspension; and adding sucrose to obtain a suspension; (3) subjecting the suspension to microwave hydrothermal reaction; after the reaction is completed, centrifuging a resulting system; and separating a resulting solid; and (4) subjecting the solid to high-temperature calcination in a muffle furnace, and grinding a resulting product to obtain the silicate/carbon composite, which can be used in photocatalytic ammonia synthesis.