Enhancement of photoelectrocatalysis efficiency of carbon nanotubes doped with TiO2 nanostructures applied on pesticide degradation

Ivana C

Abstract



In this study, a composite electrode based on multi-walled carbon nanotubes (MWCNT)
and titanium dioxide (TiO2) prepared by the sol-gel method was synthesized and
evaluated for the photoelectrochemical oxidation of carbaryl. The MWCNT/TiO2
composite was deposited into a titanium plate (Ti) and characterised by scanning
electron microscopy (SEM), X-ray diffraction (XRD), and electrochemically. The
photoelectrochemical oxidation of carbaryl was studied to evaluate potential
applications of the Ti/MWCNT/TiO2 composite electrode in environmental science.
The carbaryl removal efficiency yielded 71.0% at an applied potential of +1.5 V for 1 h
using the Ti/MWCNT/TiO2 composite electrode in presence of light. In comparison, the
removal efficiency reached 57.6% using the same parameters, however in absence of
light. The results demonstrated the interesting photoelectrochemical properties of the
developed material when applied on the pesticide degradation.

Keywords


Carbon nanotubes, Titanium dioxide, Carbaryl

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DOI: http://dx.doi.org/10.1828/cmr.v6i3.694

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