Enhancement of photoelectrocatalysis efficiency of carbon nanotubes doped with TiO2 nanostructures applied on pesticide degradation
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.
Copyright (c) 2019 Ivana C
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