Carbon Allotropes in Other Metals (Cu, Zn, Fe etc.) Removal

Abstract

Heavy metal contamination in water is a serious issue that puts people's health at risk. Carbon nanomaterials are gaining popularity as a result of their superior physicochemical features, which can be used to remediate heavy metal-contaminated water more effectively. Because of their large surface area, nanoscale size, and availability of various functionalities, carbon nanomaterials, such as carbon nanotubes, fullerenes, graphene, graphene oxide, and activated carbon, have great potential for heavy metal removal from water. Toxic metal pollution (heavy metals, radioactive metals, etc.) is one of the most serious global problems; hence, removing toxic metals from contaminated water appears to be very vital. Nanotechnology plays a critical role in environmental monitoring and pollution management to address these concerns. Carbon nanotubes (CNTs) and their composites have gained a lot of attention because of their high adsorption capability in removing metals from contaminated water or enriching metals from wastewater. By selectively functionalizing CNTs with organic ligands, the removal efficiency for metal ions by CNTs was found to be around 10% to 80%, which may be enhanced to nearly 100%. We examine the use of carbon nanotubes (CNTs) in the treatment of toxic metal-containing wastewater for environmental monitoring and metal recovery in this paper. The newest study advancement of employing CNT composites for metal treatment is also mentioned, due to their increased sensitivity and selectivity towards metal enrichment or detection of harmful metal contamination of the environment.