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The roles of nanomaterials in conventional and emerging technologies for heavy metal removal: a state-of-the-art review

Subramaniam, Mahesan Naidu and Goh, Pei Sean and Lau, Woei Jye and Ismail, Ahmad Fauzi (2019) The roles of nanomaterials in conventional and emerging technologies for heavy metal removal: a state-of-the-art review. Nanomaterials, 9 (4). pp. 1-32. ISSN 2079-4991

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Official URL: http://dx.doi.org/10.3390/nano9040625

Abstract

Heavy metal (HM) pollution in waterways is a serious threat towards global water security, as high dosages of HM poisoning can significantly harm all living organisms. Researchers have developed promising methods to isolate, separate, or reduce these HMs from water bodies to overcome this. This includes techniques, such as adsorption, photocatalysis, and membrane removal. Nanomaterials play an integral role in all of these remediation techniques. Nanomaterials of different shapes have been atomically designed via various synthesis techniques, such as hydrothermal, wet chemical synthesis, and so on to develop unique nanomaterials with exceptional properties, including high surface area and porosity, modified surface charge, increment in active sites, enhanced photocatalytic effciency, and improvedHMremoval selectivity. In this work, a comprehensive review on the role that nanomaterials play in removing HM from waterways. The unique characteristics of the nanomaterials, synthesis technique, and removal principles are presented. A detailed visualisation of HM removal performances and the mechanisms behind this improvement is also detailed. Finally, the future directions for the development of nanomaterials are highlighted.

Item Type:Article
Uncontrolled Keywords:membrane, nanomaterials, photocatalysis
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:87982
Deposited By: Yanti Mohd Shah
Deposited On:30 Nov 2020 21:44
Last Modified:30 Nov 2020 21:44

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