Design and simulation of a photocatalysis reactor for rhodamine B degradation using cobalt-doped ZnO film

Abstract

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Adsorption of textile dyes from aqueous solutions onto clay: Kinetic modelling and equilibrium isotherm analysis

“…The commercial activated carbon is commonly utilized as an effective adsorbent in the adsorption process but researches are still carried out for organic or inorganic cheap and effective alternatives due to its high production and regeneration costs ( Arellano-Cardenas et al, 2013 ; Abidi et al, 2015 ). Recently developed polymeric ( Naciri et al, 2022 ) and metallic composites ( Tanji et al, 2021 ) have been proposed as effective alternatives for the adsorption ( Imgharn et al, 2022 ) or photocatalytic degradation ( Fahoul et al, 2022 ) of metal ions ( Imgharn et al, 2023 ), dyes ( Hsini et al, 2021 ), and other organic pollutants. However, clay minerals have been mostly used to remove dyes from aqueous solutions ( Bhattacharyya et al, 2014 ) since their properties such as non-toxicity, naturally abundancy, low-cost, high surface area, and porosity ( Gürses et al, 2009 ).…”

Probing size-dependent defects in zinc oxide using synchrotron techniques: impact on photocatalytic efficiency

“…The Rh-B molecules react with the superoxide free radical to disintegrate in non-toxic simpler molecules leading to its mineralization. 71–74 Fig. 15 depicts a schematic of the mechanism for the degradation of Rh-B dye using ZnO as the photocatalyst under UV-Visible lamp irradiation.…”

“…The Rh-B molecules react with the superoxide free radical to disintegrate in non-toxic simpler molecules leading to its mineralization. [71][72][73][74] (5)…”

Experimental and ab initio studies of Co-doped ZnO nanophotocatalyst thin films for dye mineralization

“…27 Cobalt dopants are employed to create new energy levels in the bandgap that can be stimulated by visible light. 28 In addition, cobalt is a remarkable partner of the ZnO nanophotocatalyst to enhance the photocatalytic activity by substituting the ZnO structure. 29…”