Adsorption and Adsorption-Photocatalytic Degradation of VOCs Based on Carbon Materials

Adsorption and the combination of adsorption and photocatalysis are prospective strategies for treating low concentration volatile organic compounds (VOCs). Behind the adsorption technology of VOC treatments are carbon-based materials with large surface areas and high VOC uptake. This review summarizes the research progress in carbon-based adsorbents and adsorbent-photocatalysts for VOC removal. Firstly, the VOC adsorption performances of various carbon materials, including activated carbon, activated carbon fiber, biochar, graphene and its derivatives, and carbon nanotubes, are summarized, and the adsorption mechanism of VOCs on carbon materials is analyzed. Then, the VOC adsorptionphotocatalytic properties of composites comprised of different carbon materials and photocatalysts are presented. Finally, perspectives on the adsorption and adsorption-photocatalysis of VOCs via carbon materials are proposed. This review provides an optimal reference for the research and development of adsorbents and adsorption-photocatalysts of VOCs.