Photocatalytic Oxidation of Four Model Mercaptans from Aquatic Environment Using Ag-ZnO Nanocomposite Thin Film for Odor Control

作者：Habibi Mohammad Hossein^*; Sheibani Reza

来源：Journal of Advanced Oxidation Technologies, 2010, 13(2): 192-199.

• Mineralization
• Mercaptan
• 2-Mercaptobenzoxazole
• 2-Mercaptobenzimidazole
• 3-Mercapto-1,2,4-triazole
• 2-Mercaptopyrimidine
• Ag-ZnO thin film
• Nano-composite thin film

In this study, Ag-ZnO nanocomposite thin film catalysts coated on glass prepared by a simple spin-coating method were used to mineralize four model mercaptans, 2-Mercaptobenzoxazole (MBO), 2-Mercaptobenzimidazole (MBI), 3-Mercapto-1,2,4-triazole (MT) and 2-Mercaptopyrimidine (MP) for odor control. Ag-ZnO nanocomposite thin film was characterized by means of X- ray diffraction (XRD), scanning electron microscopy/energy dispersive X- ray spectrometry (SEM/EDX). It was found that these mercaptans underwent photocatalytic degradation in the presence of Ag-ZnO nano-composite thin film, and the optimum catalyst was Ag-ZnO with 0.064 molar percent of Ag. The rate of photocatalytic process carried out with Ag-ZnO thin film as well as the relationship between the operational parameters. This fundamental research about the photocatalytic reaction provides essential knowledge with potential to further develop a new process for mercaptan degradation in odor control.

• 出版日期2010-6