Enhancement of zinc oxide-mediated solar light decoloration of Acid Yellow 99 dye by addition of β-CD

Abstract

In the current work, the commercially available ZnO photocatalyst was used to investigate the photodecoloration of Acid yellow 99 (AY99) dye under solar light radiation. Promising enhancement of photodecoloration of AY99 dye was also achieved by the addition of b-cyclodextrin (b-CD) with the ZnO (ZnO-b-CD). The effects of process parameters such as initial concentration, pH, catalyst loading, and illumination time on the extent of decoloration were investigated. The optimum catalyst loading was observed at 2.0 g/L. The higher photoactivity of ZnOb-CD/solar light system than ZnO/solar light system can be ascribed due to the ligand to metal charge transfer (LMCT) from b-CD to Zn II . The complexation patterns have been confirmed with UV-visible and FT-IR spectroscopy and the interaction between ZnO and b-CD has been characterized by FE-SEM, powder XRD analysis, and UV-visible diffuse reflectance spectroscopy.

Role of NiO Nanoparticles in Enhancing Structure Properties of TiO2 and Its Applications in Photodegradation and Hydrogen Evolution

“…Brilliant green (BG) is a very common dye that has a wide range of applications in modern textile, printed circuit boards, inks, biological staining, rubber and plastic industries, leather industries, and antiseptic preparation (Gram-positive bacteria). , BG has been reported to cause carcinogenicity, hypersensitivity, and toxicity to living organisms. , Phenols are also highly toxic organic compounds, and these compounds are found in wastewater coming from the chemical and petroleum industries . Different techniques were investigated for dye removal from wastewater, such as biological treatment, photodegradation, coagulation–flocculation, and adsorption processes. ,− Photodegradation is efficient in the industrial wastewater treatment process with more success rates …”

“…25,27 Phenols are also highly toxic organic compounds, and these compounds are found in wastewater coming from the chemical and petroleum industries. 28 Different techniques were investigated for dye removal from wastewater, such as biological treatment, 29 photodegradation, 30 coagulation−flocculation, 31 and adsorption processes. 10,32−37 Photodegradation is efficient in the industrial wastewater treatment process with more success rates.…”

Role of b-Cyclodextrin in Enhanced Photocatalytic Decolorization of Metanil Yellow Dye with TiO2

“…TiO2 (e¯ + h + ) + MY dye UV → H 2 O + CO 2 + mineralization products The following reactions explain the stepwise mechanism of enhanced photodecolorization of metanil yellow dye by TiO 2 -β-cyclodextrin system [20,21].…”

Investigation of metal doped mesoporous TiO2 nanostructures for environmental remediation

“…Various methods such as membrane separation, ltration, distillation, adsorption, biological treatment and photodegradation have been developed for the degradation of pollutants through wastewater treatment [2][3][4]. Among these various methods, photodegradation is found to be the most effective method because of its operational simplicity, complete mineralization and low cost [5][6][7].…”