FTO-TiO2 Photoelectrocatalytic Degradation of Triphenyltin Chloride Coupled to Photoelectro-Fenton - a mechanistic study
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2020-04-05 |
| Authors | Jianxiong Xu, Hugo OlveraāVargas, Bryan Jian Hua Loh, Olivier Lefebvre |
Abstract
Section titled āAbstractāAbstract A powerful, simple and stable transparent photoanode based on TiO2 nanoparticles deposited on fluorine-doped tin oxide (FTO) was synthesized for the photoelectrocatalytic degradation of the organometallic pollutant triphenyltin chloride (TPTCl). Contrasting with most of the works on photoelectrocatalysis (PEC), FTO-TiO2 was found to be an excellent anode material for the degradation/mineralization of organic pollutants at high anodic potentials through the formation of electrochemically-induced hVB+ (dark PEC), showing a similar behavior as the so-called ānon-activeā anodes like the powerful boron doped diamond electrode (BDD). The electrocatalytic efficiency was enhanced by the photoexcitation of TiO2 under UV light (PEC) and by coupling with photoelectro-Fenton (PEC-PEF): this resulted in complete degradation of TPTCl in 15āÆmin (kapp =0.274āÆminā1) and total mineralization in 2āÆh. The mechanisms governing the photoelectrocatalytic processes are investigated in detail by means of electrochemical measurements and chemical probes, and a mineralization pathway for TPTCl is proposed.
Tech Support
Section titled āTech SupportāOriginal Source
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