Photo-assisted electrochemical abatement of trifluralin using a cathode containing a C60-carbon nanotubes composite

This work reports the potential application of modified gas-diffusion electrode (GDE) with C60-CNT composite, as a stable and efficient cathode material for degradation of trifluralin (TRL) pesticide by photo-assisted electrochemical (PE) process. C60-CNT composite was prepared and characterized. Su...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2018-05, Vol.199, p.510-523
Main Authors: Hasanzadeh, Aliyeh, Khataee, Alireza, Zarei, Mahmoud, Joo, Sang Woo
Format: Article
Language:English
Subjects:
C60-CNT composite
Cathode modification
Hydrogen peroxide electrogeneration
Pesticide degradation
Photoassisted electrochemical process
Trifluralin
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Summary:This work reports the potential application of modified gas-diffusion electrode (GDE) with C60-CNT composite, as a stable and efficient cathode material for degradation of trifluralin (TRL) pesticide by photo-assisted electrochemical (PE) process. C60-CNT composite was prepared and characterized. Subsequently, a novel C60-CNT composite modified GDE cathode was developed and the electrochemical and physical characteristics of the modified GDEs were studied. C60-CNT composite/GDE showed great efficiencies for electro-generating H2O2, owing to huge surface area and high conductivity. Afterwards, a comparative study of TRL oxidation via photolysis, anodic oxidation (AO) and PE processes using C60-CNT composite/GDE revealed the degradation percentages of 42.2, 48.5 and 93.4%, respectively, after 180 min of treatment. The TRL degradation followed a pseudo-first-order kinetics, being faster in the order: photolysis 
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2018.02.061