Factors Influencing the Photocatalytic Activity of Photocatalysts in Wastewater Treatment

Chapter 8 Factors Influencing the Photocatalytic Activity of Photocatalysts in Wastewater Treatment Rashi Gusain, Rashi Gusain Department of Chemical Sciences, University of Johannesburg, Doornfontein, South Africa Centre for Nanostructures and Advanced Materials, DSI-CSIR Nanotechnology Innovation Centre, Council for Scientific and Industrial Research, Pretoria, South AfricaSearch for more papers by this authorNeeraj Kumar, Neeraj Kumar Centre for Nanostructures and Advanced Materials, DSI-CSIR Nanotechnology Innovation Centre, Council for Scientific and Industrial Research, Pretoria, South AfricaSearch for more papers by this authorSuprakas Sinha Ray, Suprakas Sinha Ray Department of Chemical Sciences, University of Johannesburg, Doornfontein, South Africa Centre for Nanostructures and Advanced Materials, DSI-CSIR Nanotechnology Innovation Centre, Council for Scientific and Industrial Research, Pretoria, South AfricaSearch for more papers by this author Rashi Gusain, Rashi Gusain Department of Chemical Sciences, University of Johannesburg, Doornfontein, South Africa Centre for Nanostructures and Advanced Materials, DSI-CSIR Nanotechnology Innovation Centre, Council for Scientific and Industrial Research, Pretoria, South AfricaSearch for more papers by this authorNeeraj Kumar, Neeraj Kumar Centre for Nanostructures and Advanced Materials, DSI-CSIR Nanotechnology Innovation Centre, Council for Scientific and Industrial Research, Pretoria, South AfricaSearch for more papers by this authorSuprakas Sinha Ray, Suprakas Sinha Ray Department of Chemical Sciences, University of Johannesburg, Doornfontein, South Africa Centre for Nanostructures and Advanced Materials, DSI-CSIR Nanotechnology Innovation Centre, Council for Scientific and Industrial Research, Pretoria, South AfricaSearch for more papers by this author Book Editor(s):Elvis Fosso-Kankeu, Elvis Fosso-KankeuSearch for more papers by this authorSadanand Pandey, Sadanand PandeySearch for more papers by this authorSuprakas Sinha Ray, Suprakas Sinha RaySearch for more papers by this author First published: 15 May 2020 https://doi.org/10.1002/9781119631422.ch8 AboutPDFPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShareShare a linkShare onFacebookTwitterLinked InRedditWechat Summary Photocatalysis is considered as a promising, sustainable, economically feasible, environmentally friendly technique to improve the quality of the wastewater with zero secondary waste and help to fight the clean water scarcity. Advances in the development of semiconductor nanomaterials have attracted a considerable amount of interest in wastewater treatment. Several UV/visible light excitable nanomaterials such as TiO2, ZnO, MoS2, g-C3N4, CuO, Fe2O3, CdS, SnO2, ZnS, SrTiO3, etc., and their nanohybrids have been studied as photocatalysts to degrade organic/inorganic pollutants from wastewater. Their efficiency can be controlled by optimizing various parameters (e.g., pH, temperature, the dosage of catalyst, oxidants, light intensity, morphology, etc.) during the reaction. The experimental conditions significantly affect the performance of photocatalyst in the photodegradation of contaminants. Optimization of operating parameters and their effect on photocatalytic degradation of water pollutants will be the main focus of this chapter. It was noticed that photocatalytic property of materials can be improved by changing morphologies, doping of element, addition of oxidant, high surface area, and high light intensity. Also, the brief about designing strategies and general mechanism of photocatalysis and recent advances in nanomaterials and nanohybrid materials will be discussed here. Photocatalysts in Advanced Oxidation Processes for Wastewater Treatment RelatedInformation