The Application of Mineral Kaolinite for Environment Decontamination: A Review

Kaolinite clay mineral with a layered silicate structure is an abundant resource in China. Due to its advantages of excellent stability, high specific surface area and environmental friendliness, kaolinite widely used environment decontamination. By using as carrier, the photocatalytic technology pure photocatalysts poor activities, narrow spectral responses, limited electron transport can be overcome, nano-Ag disinfectant’s limitation growth aggregation nanoparticles released. Moreover, adsorbent shows hydroxyl activity low cation exchange, leading adsorption selectivity easy desorption heavy metals. Current modification methods including heat treatment, acid modification, metal inorganic salt organic are carried out obtain better performance. This review systematically summarizes application kaolinite-based nanomaterials decontamination, such pollutant degradation disinfection, nano silver (Ag) adsorption. In addition, applications on gas phase pollutant, carbon dioxide (CO2), capture removal volatile compounds (VOCs) also discussed. study first comprehensive summary field. The illustrates efficiency mechanisms coupling naturally/modified nanomaterials, current use kaolinite.