4.7 Article

Improving the air quality with Functionalized Carbon Nanotubes: Sensing and remediation applications in the real world

期刊

CHEMOSPHERE
卷 299, 期 -, 页码 -

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PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2022.134468

关键词

Carbon nanotubes; Nanocomposites; Functionalization; Air filter; Gas sensing; Air pollution

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This article introduces the method and advantages of using carbon nanotubes as adsorbents to purify the air, including the synthesis, functionalization, and purification methods of carbon nanotubes, as well as their applications in removing pollutants and detecting harmful gases.
With the world developing exponentially every day, the collateral damage to air is incessant. There are many methods to purify the air but using carbon nanotubes (CNTs) as adsorbents remains one of the most efficient and reliable methods, due to their high maximum adsorption capacity which renders them extremely useful for removing pollutants from the air. The different types of CNTs, their synthesis, functionalization, purification, functioning, and advantages over conventional filters are deliberated along with diverse types of CNTs like single-walled (SWCNTs), multiwalled (MWCNTs), and others, which can be functionalized and deployed for the removal of harmful gases like oxides of nitrogen and sulphur, and ozone, and volatile organic compounds (VOCs), among others. A comprehensive description of CNTs is provided in this overview with illustrative ex-amples from the past five years. The fabrication methods and target gases of many CNTs-based gas sensors are highlighted, in addition to the comparison of their properties, mainly sensitivity. The effect of functionalization on sensors has been discussed in detail for various composites targeting specific gases, including the future outlook of functionalized CNTs in assorted practical applications.

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