Layered double hydroxides for air pollution control: Applications, mechanisms and trends

Layered double hydroxides (LDHs) are often used as adsorbents and catalysts in pollutant treatment because of their unique layered structure and chemical properties. The control of gaseous pollutants is an important step in environmental pollution control. In this paper, the research status of LDHs in the capture and transformation of typical gaseous pollutants (SO2, NOx, VOCs, CO2) is reviewed, especially the purification mechanism and application advantages of these materials are expounded, and the future development direction of this material is predicted and analyzed.