3 years ago

Electrocatalytic reduction of nitroaromatic compounds by activated graphite sheets in the presence of atmospheric oxygen molecules

Electrocatalytic reduction of nitroaromatic compounds by activated graphite sheets in the presence of atmospheric oxygen molecules
The anthropogenic climate and environmental issues incite the remediation of nitroaromatic compounds (NACs). Therefore, most of the researches have been devoted to the electrocatalytic reduction of NACs. Mainly, the carbonaceous materials have been employed asan electrode material for the determination of NACs. However, the effect of oxygen reduction is necessary to address with the electrocatalytic reduction of NACs. Hence, this work mainly focuses the reduction of NACs with the saturated oxygen and atmospheric oxygen conditions. The graphite and nitrobenzene (NB) were chosen asa model electrode and analyte for assess the effect of oxygen reduction. Though, the graphite is no longer express high electrocatalytic activity thus the activated graphite sheets were employed in the determination of NACs. Interestingly, the activated graphite sheets exhibited an excellent performance to the reduction of nitrobenzene and revealed an acceptable linear range around 0.05–1100µM, 0.05–147µM and 0.05–145µM, in the N2, O2 and aerated atmospheres, respectively. Moreover, the lowest detection limits were obtained around 0.026µM, 0.031µM and 0.032µM, for the N2, O2 and aerated atmospheres respectively. In order to investigate the electrochemical reactivity of activated graphite, four different NACs were selected such as flutamide (anti-cancer drug), methyl parathion (pesticide), 4-nitro aniline and 4-nitro phenol.

Publisher URL: www.sciencedirect.com/science

DOI: S0021951717303342

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