Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10141493 | Journal of Molecular Liquids | 2018 | 58 Pages |
Abstract
Photocatalysis, a green technique is widely applied in the fields of environmental remediation for the removal of many pollutant constituents. It is known that major problems related to the present photocatalytic system, which significantly limit their photocatalysis efficiency, are low-usage of visible light, fast recombination and also the low migration ability of the photo-generated electrons and holes. To solve the problem associated with conventional photocatalytic systems, recently hybrid photocatalysts containing carbon quantum dots (CQDs) have been proposed. The tunable photocatalytic characteristics of CQDs are widely mentioned. Moreover, the excellent photocatalytic activity of CQDs alone and in combination with photoactive species in the photo-degradation of organic pollutants was confirmed in the many reports. This work presents a comprehensive view of the application of CQDs to improve conventional photocatalytic systems in those studies which considered organic dyes as sample pollutants. In addition to providing detailed information regarding important roles of CQDs in photocatalytic activity enhancement, this review provides the comprehensive details about findings of the photocatalytic degradation of dyes using CQD-based photocatalysts and the best CQD-based composites photocatalysts are highlighted.
Keywords
CNDsN-doped carbon quantum dotsNCDsTiO2 nanosheetTNSCQDsrHbAOPsPhoto-induced electron transferHomohighest occupied molecular orbitalconduction bandOrganic dyesRhodamine BCongo redPhotodegradationAdvanced oxidation processesPhotoluminescencePhotocatalysisLangmuir-HinshelwoodLUMOMethyl orangeMethylene blueCarbon nanodotsCarbon quantum dotsN-doped carbon dotsPETLowest Unoccupied Molecular Orbitalvalence band
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Meghdad Pirsaheb, Anvar Asadi, Mika Sillanpää, Negin Farhadian,