Modified-ZnO-mediated dye detoxification by a heterogeneous Fenton process

• DOI: 10.1680/jemmr.22.00151
• Publication Date: 2023-04-13T14:43:19Z
• Authors: Abdulmohsen K D A...; Mohd Wajid Ali Khan; Ahmed Al-Otaibi; Asma K Alshamari; Eida Mohammad Als...; Lassaad Mechi; Fathi Rabeh Alimi; Shahper Nazeer Khan
• Keywords: 01 natural sciences; 6. Clean water; 0104 chemical sciences

The continuous and unchecked discharge of effluents by the dyeing industry into water bodies has led to rising importance treatment. This study focuses on successful abatement auramine O (AM) dye in an aqueous system through a heterogeneous Fenton process using ultrasonication. Zinc oxide (ZnO) nanoparticles (NPs) were obtained straightforward precipitation method then modified with glycine (M-ZnO). NP size sharply decreased upon modification glycine. X-ray diffraction was used determine basic crystal properties, such as crystallinity. It observed that NPs from 24.6 nm (pure zinc oxide) 17.3 A bandgap 3.4 eV determined for M-ZnO UV–visible spectrophotometer. Thermal gravimetric analysis revealed excellent thermal stability compared oxide. catalytic activity AM at pH 6. Detoxification assays showed pure hydrogen peroxide (H 2 ) exhibited 38 37% degradation, respectively. Meanwhile, 97% degradation 240 min. plausible mechanism is proposed