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Electrocatalytic reduction of nitroaromatic compounds by activated graphite sheets in the presence of atmospheric oxygen molecules
Journal of Catalysis ( IF 7.3 ) Pub Date : 2017-11-06 , DOI: 10.1016/j.jcat.2017.09.012
Natarajan Karikalan , Subbiramaniyan Kubendhiran , Shen-Ming Chen , Periyasamy Sundaresan , Raj Karthik

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 as an 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 as a 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 0.05–1100 µM, 0.05–147 µM and 0.05–145 µM, in the N2, O2 and aerated atmospheres, respectively. Moreover, the lowest detection limits were obtained around 0.026 µM, 0.031 µM and 0.032 µM, 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.



中文翻译:

大气中存在氧分子的情况下,活性石墨片电催化还原硝基芳族化合物

人为的气候和环境问题引发了对硝基芳香族化合物(NAC)的修复。因此,大多数研究致力于NAC的电催化还原。主要地,碳质材料已被用作确定NAC的电极材料。但是,氧还原的作用对于解决NAC的电催化还原是必需的。因此,这项工作主要集中在饱和氧和大气氧条件下还原NAC。选择石墨和硝基苯(NB)作为模型电极和分析物,以评估氧还原的效果。但是,石墨不再表现出高的电催化活性,因此将活化的石墨片材用于NAC的测定。有趣的是,在图2中,分别为O 2和充气气氛。此外,对于N 2,O 2和充气气氛,最低检测限分别为0.026 µM,0.031 µM和0.032 µM 。为了研究活性石墨的电化学反应性,选择了四种不同的NAC,例如氟他胺(抗癌药),甲基对硫磷(农药),4-硝基苯胺和4-硝基苯酚。

更新日期:2017-11-06
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