Carbon-based heterogeneous photocatalysts for water cleaning technologies: a review
authors Lopes, JL; Martins, MJ; Nogueira, HIS; Estrada, AC; Trindade, T
nationality International
journal ENVIRONMENTAL CHEMISTRY LETTERS
author keywords Carbon nanostructures; Metal oxides; Metal sulfides; Polyoxometalates; Semiconductors carbon nanocomposites; Visible-light photocatalysts; Heterogeneous photocatalysis; Photodegradation; Organic pollutants; Water cleaning
keywords REDUCED GRAPHENE-OXIDE; ONE-POT SYNTHESIS; LIQUID-PHASE EXFOLIATION; HIGH-PERFORMANCE; QUANTUM DOTS; METHYLENE-BLUE; IN-VIVO; PHOTOLUMINESCENCE PROPERTIES; POLYOXOMETALATE CLUSTERS; SULFIDE NANOSTRUCTURES
abstract Clean and accessible water for all has been defined by the United Nations as a major goal to promote sustainability in a planet with improved life quality. However, the growth of population and global industry processes are having a massive impact on the water quality. The presence of organic pollutants in water and wastewater, such as pharmaceuticals, organic dyes and by-products of industrial processes, is a major issue. Conventional wastewater treatments are still limited, and, consequently, it is crucial to design innovative cleaning technologies such as heterogeneous photocatalysis with nanomaterials. Here we review mechanisms and applications of carbon-based nanostructures for heterogeneous photocatalysis applied to water purification. In particular, we present recent developments in synthetic routes and surface modification of carbon nanostructures aiming at their use under visible light irradiation. As such, carbon-based nanostructures decorated with distinct phases have been investigated, such as semiconductor compounds and polyoxometalates. The photocatalytic efficiency of hybrid nanocomposite materials is attributed to improved light harvesting and reduced recombination of photo-generated charge carriers. Furthermore, the recovery of photocatalysts by using assisted magnetic separation is presented as a promising strategy of reusability.
publisher SPRINGER HEIDELBERG
issn 1610-3653
isbn 1610-3661
year published 2021
volume 19
issue 1
beginning page 643
ending page 668
digital object identifier (doi) 10.1007/s10311-020-01092-9
web of science category 26
subject category Chemistry, Multidisciplinary; Engineering, Environmental; Environmental Sciences
unique article identifier WOS:000604831400005
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journal impact factor 5.922
5 year journal impact factor 5.249
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