Carbon quantum dot supported semiconductor photocatalysts for efficient degradation of organic pollutants in water: a review

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dc.contributor.authorSharma, Sheetal
dc.contributor.authorDutta, Vishal
dc.contributor.authorSingh, Pardeep
dc.contributor.authorRaizada, Pankaj
dc.contributor.authorRahmani-Sani, Abolfazl
dc.contributor.authorHosseini-Bandegharaei, Ahmad
dc.contributor.authorThakur, Vijay Kumar
dc.date.accessioned2019-08-16T13:11:57Z
dc.date.available2019-08-16T13:11:57Z
dc.date.issued2019-04-25
dc.description.abstractSemiconductor photocatalyst mediated advanced oxidation processes are regarded as one of the most efficient technologies to mitigate organic pollutants in water. However, poor activity under visible light and the recombination of photogenerated electron and hole pairs hinder large scale applicability of semiconductor photocatalysts for water purification. The modification of semiconductor photocatalysts with carbon quantum dots (CQDs) is of high importance due to low toxicity, aqueous stability, enhanced surface area, economic feasibility, good biocompatibility and chemical inertness of CQDs. In this review, we highlight strategies to improve the activity of conventional semiconductor photocatalysts via coupling with CQDs. The enhanced photocatalytic activity of CQD modified narrow and wide band gap photocatalysts is due mainly to up-conversion photoluminescence (UPCL) and the electron reservoir properties of CQDs, while in the case of Z-scheme photocatalysts CQDs act as an electron mediator. Finally, a conclusive outlook and suggested research directions are provided to address challenges such as the inadequate separation of photoinduced charge carriers.en_UK
dc.identifier.citationSharma S, Dutta V, Singh P, et al., (2019) Carbon quantum dot supported semiconductor photocatalysts for efficient degradation of organic pollutants in water: a review. Journal of Cleaner Production, Volume 228, August 2019, pp. 755-769en_UK
dc.identifier.issn0959-6526
dc.identifier.urihttps://doi.org/10.1016/j.jclepro.2019.04.292
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/14445
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectSemiconductor photocatalysisen_UK
dc.subjectLimitations of conventional photocatalystsen_UK
dc.subjectCarbon quantum dots modified photocatalystsen_UK
dc.subjectImproved photocatalytic activityen_UK
dc.subjectWastewater treatmenten_UK
dc.titleCarbon quantum dot supported semiconductor photocatalysts for efficient degradation of organic pollutants in water: a reviewen_UK
dc.typeArticleen_UK

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