Photoelectrochemical degradation of bisphenol A using Cu doped WO3 electrodes

Cu-doped WO3 electrode was fabricated on FTO substrate via one step preparation by modified sol-gel method using a suspension of [(NH4)10H2(W2O7)6] and CuSO4·5H2O in mix of polyethylene glycol 300 and ethylene glycol. Photoelectrocatalytic degradation of bisphenol A (BPA) with Cu-doped WO3 electrode...

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Bibliographic Details
Published in:Journal of electroanalytical chemistry (Lausanne, Switzerland) Switzerland), 2019-04, Vol.839, p.123-133
Main Authors: Goulart, Lorena Athie, Alves, Suellen Aparecida, Mascaro, Lucia Helena
Format: Article
Language:English
Subjects:
Bisphenol A
Chemical sensors
Cu doped WO3
Degradation
Electrochemical sensor
Electrodes
Ethylene glycol
Hydrogen peroxide
Intermediates
Light irradiation
Oxidation
Oxidizing agents
Photodegradation
Polyethylene glycol
Sol-gel processes
Spectrophotometry
Substrates
Tungsten oxides
Visible light activity
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Summary:Cu-doped WO3 electrode was fabricated on FTO substrate via one step preparation by modified sol-gel method using a suspension of [(NH4)10H2(W2O7)6] and CuSO4·5H2O in mix of polyethylene glycol 300 and ethylene glycol. Photoelectrocatalytic degradation of bisphenol A (BPA) with Cu-doped WO3 electrode was performed under visible light irradiation and H2O2 as auxiliary oxidizing agent. For monitoring of the photoelectrocatalysis it was used conventional and alternative method (UV–Vis spectrophotometry and electrochemical sensor, respectively). After 8h of assay, it was verified removal of 80% of BPA and formation of the phenolic intermediates using electrochemical sensor and 75% of total carbon organic removal. [Display omitted] •Cu doped WO3 electrodes were synthesized successfully by sol gel modified method.•The electrode was applied in the BPA photodegradation with 75% of TOC removal.•Electrochemical sensor (NiO/MWCNT/GCE) was used for monitoring of the BPA decay and intermediates formed.
ISSN:1572-6657
1873-2569
DOI:10.1016/j.jelechem.2019.03.027