Abstract
During the past few years, facile synthesis of a plethora of carbon-based nanomaterials and upcycling of wastes to value-added materials has surged as an area of extensive research. Among numerous carbon-based nanomaterials, carbon nanotubes (CNTs) possessing unique structures and remarkable properties have huge potential in the energy and environment sectors. Several conventional methods are reported in the literature for CNTs synthesis but a few are mentioned on their green synthesis. The objective of this chapter is to present a broad overview of waste-derived CNTs concerning environmental applications starting with the identification of wastes that can be utilized as feedstock resources for producing CNTs followed by their various synthesis techniques. Further utilization of waste-derived CNTs in different environmental applications like water and soil remediation, soil and air quality monitoring, pesticide removal, etc. have been figured out. In conclusion, the socio-economic impact of CNTs and their future perspectives has been discussed.
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