Electrochemical monitoring of the photocatalytic degradation of the insecticide emamectin benzoate using TiO2 and ZnO materials
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2023-04-11 |
| Journal | Applied Catalysis A General |
| Authors | Wesley J. McCormick, Denis McCrudden, Nathan Skillen, Peter K. J. Robertson |
| Institutions | Queenâs University Belfast, Atlantic Technological University |
| Citations | 15 |
Abstract
Section titled âAbstractâPhotocatalysis is a rapidly expanding technology where a diverse range of toxic chemicals can be completely degraded in water. In this study, an efficient photocatalytic method for the degradation of the aquatic pollutant, emamectin benzoate, coupled with a novel electrochemical monitoring method is reported for the first time. Photocatalytic reactions were performed in a slurry-based reactor containing either a ZnO or TiO2 photocatalyst irradiated with 365 nm UV-LEDs. Electrochemical monitoring was accomplished using Square Wave Voltammetry using a cathodically pre-treated boron doped diamond indicator electrode. Parameters such as initial pollutant concentration, solution pH and photocatalyst dosage, were investigated to optimise the process. While ZnO provided a higher initial rate of degradation than TiO2 at all concentrations investigated, the overall degradation profiles were similar. This novel technique allowed a large range of parameters to be rapidly and effectively scrutinised using electrochemical monitoring of the degradation.
Tech Support
Section titled âTech SupportâOriginal Source
Section titled âOriginal SourceâReferences
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