Synthesis and Characterization of Graphene Oxide-modified Bi2WO6 and Its Use as Photocatalyst

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dc.contributor.authorHu, Xiaoyue
dc.date.accessioned2014-08-15T13:26:38Z
dc.date.available2014-08-15T13:26:38Z
dc.date.created2014
dc.date.issued2014
dc.identifier.urihttp://hdl.handle.net/10393/31459
dc.identifier.urihttp://dx.doi.org/10.20381/ruor-6364
dc.description.abstractThe control of environmental pollution, particularly in wastewater treatment, is one of the major concerns of the 21st century. Among the currently available pollution control technologies, photocatalysis is one of the most promising and efficient approaches to the reduction of pollutants. Graphene, a carbon nanomaterial with specific physical and chemical properties, has been reported as a promising potential new catalyst material in this field. A Bi2WO6 photocatalyst modified with graphene oxide was synthesized in a two-step hydrothermal process. Compared with pure Bi2WO6, the modified photocatalyst with 1.2 wt% graphene oxide improved photoactivity during the degradation of rhodamine-B (RhB) dye pollutant, by facilitating the dissociation of photogenerated excitons, which in turn results in more O2- radicals. XRD characterization showed that the modification of Bi2WO6 with graphene oxide does not affect its structure or morphology. The adsorption properties of graphene also contribute to the improvement of photoactivity. Other parameters such as catalyst dosage, temperature and solution pH are studied, with the aim to improve the efficiency of RhB removal.
dc.language.isoen
dc.publisherUniversité d'Ottawa / University of Ottawa
dc.subjectPhotocatalyst
dc.subjectBi2WO6
dc.subjectGraphene oxide
dc.subjectHydrothermal method
dc.titleSynthesis and Characterization of Graphene Oxide-modified Bi2WO6 and Its Use as Photocatalyst
dc.typeThesis
dc.faculty.departmentGénie chimique et biologique / Chemical and Biological Engineering
dc.contributor.supervisorZhang, Zisheng
dc.degree.nameMASc
dc.degree.levelmasters
dc.degree.disciplineGénie / Engineering
thesis.degree.nameMASc
thesis.degree.levelMasters
thesis.degree.disciplineGénie / Engineering
uottawa.departmentGénie chimique et biologique / Chemical and Biological Engineering
CollectionThèses, 2011 - // Theses, 2011 -

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