Show simple item record

dc.contributor.authorLiu, S.
dc.contributor.authorSun, Hongqi
dc.contributor.authorAng, H.
dc.contributor.authorTade, Moses
dc.contributor.authorWang, Shaobin
dc.identifier.citationLiu, S. and Sun, H. and Ang, H. and Tade, M. and Wang, S. 2016. Integrated oxygen-doping and dye sensitization of graphitic carbon nitride for enhanced visible light photodegradation. Journal of Colloid and Interface Science. 476: pp. 193-199.

Graphitic carbon nitride (GCN) is a promising metal-free photocatalyst while suffering from low charge mobility induced inefficient photocatalysis. In this work, oxygen doping was employed to enhance the photodegradation of organic pollutants in water on graphitic carbon nitride (GCNO) under visible light. For further absorption extension, four organic dyes (Eosin-Y, Perylene, Nile-red and Coumarin) were adopted to dye-sensitize the GCNO photocatalyst. It was found that O-doping can promote dye sensitization, which was dependent on the type of dyes and influenced the photodegradation efficiencies of methylene blue (MB) and phenol. Nile-red sensitized GCNO presented the best activity in MB degradation under λ > 480 nm irradiations while Eosin-Y showed the best sensitization performance for phenol degradation under λ > 420 nm light source. However, dye sensitization was not effective for enhanced pollutant degradation on GCN without O-doping. UV–vis diffuse reflectance spectra (UV–vis DRS), photoluminescence (PL) spectra, and photocurrent analyses were applied to investigate the mechanism of carriers’ transfer, which indicated that dye molecules could inject extra electrons into GCNO energy band and the energy dislocation could suppress electron/hole recombination, enhancing photocatalytic performances.

dc.publisherAcademic Press
dc.titleIntegrated oxygen-doping and dye sensitization of graphitic carbon nitride for enhanced visible light photodegradation
dc.typeJournal Article
dcterms.source.titleJournal of Colloid and Interface Science
curtin.departmentDepartment of Chemical Engineering
curtin.accessStatusFulltext not available

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record