- Title
- Advances in porous material research towards the management of air pollution
- Creator
- Palliyarayil, A.; Saini, H.; Vinayakumar, K.; Selvarajan, P.; Vinu, A.; Kumar, N. S.; Sil, S.
- Relation
- Emergent Materials Vol. 4, p. 607-643
- Publisher Link
- http://dx.doi.org/10.1007/s42247-020-00151-9
- Publisher
- Springer
- Resource Type
- journal article
- Date
- 2021
- Description
- Air pollution is a global challenge and researchers have been making tremendous efforts towards its abatement using existing or novel materials. To date, various porous solid adsorbent materials have gained significant attention, due to their textural properties, ease of modification, efficiency, selectivity, and recyclability. Although carbon-based adsorbents show promising adsorption efficiency, the capacity of the materials can be further enhanced and made more specific by various surface treatment methods. Functionalization with acidic/basic functionalities or incorporation of metal/metal oxides enhances the pollutant removal capacity of the granular activated carbon (GAC)/activated carbon fiber cloth (ACFC). Similarly, different modifications are performed on carbon aerogels with a view to make it appropriate for specific applications such as removal of CO2, CO, and volatile organic compounds. Currently, carbon aerogel nanohybrids from organic biomass are being developed through hydrothermal carbonization, which involves a cost-effective and green synthesis approach with chemical-free procedures compared to the hydrocarbon precursors. In silica-based adsorbents, attention has been given on engineering the pore size and nitrogen-occupied sites in order to tailor the surface functionalities which are crucial for understanding the interactions between pollutants and meso/microporous silica materials. In zeolites, the research is based on the effect of exchangeable cations and Si/Al ratio towards improving the surface chemistry between pollutants and adsorbents. The present review focuses on the development of these sorbents with an emphasis on environmental applications. The discussion shall revolve primarily towards the synthesis and surface modification of adsorbents as well as the sorbent-adsorbate mechanism and its chemistry.
- Subject
- air pollution; adsorption; catalysis; granular activated carbon; activated carbon fiber cloth; carbon aerogels; SDG 7; SDG 13; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1436968
- Identifier
- uon:40194
- Identifier
- ISSN:2522-5731
- Language
- eng
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Goal 13: Climate Change
Goal 7: Ensure access to affordable, reliable, sustainable and modern energy
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