Background: Nanomaterials offer promising remediation techniques for water containing
toxic pollutants especially heavy metals.
Methods: A complete analysis of the application of nano-adsorbents for heavy metals removal from
water has been reviewed. The effect of their functionalization on the adsorption capacity, the reusability,
and the surface area has also been discussed.
Results: In particular, the focus was on the applications of graphene oxide, carbon, silica, titanium
dioxide, and iron oxide for water treatment. Additionally, the effect of functional groups on heavy
metal selectivity has been discussed as well.
Conclusion: This article will provide environmental engineers and academicians with information
related to the latest engineered nanomaterials employed for the treatment of wastewater containing
toxic heavy metals.