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首页> 外文期刊>Electroanalysis >Voltammetric Detection of Nitrite Anions Employing Imidazole Functionalized Reduced Graphene Oxide as an Electrocatalyst
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Voltammetric Detection of Nitrite Anions Employing Imidazole Functionalized Reduced Graphene Oxide as an Electrocatalyst

机译：Voltammetric Detection of Nitrite Anions Employing Imidazole Functionalized Reduced Graphene Oxide as an Electrocatalyst

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摘要

A kind of metal free catalyst with excellent electrocatalytic activity toward nitrite anions oxidation was synthesized through functionalization of graphene oxide (GO) with imidazole aromatic rings. Imidazole rings linked to graphene oxide nanosheets via 3-chloropropyl trimethoxysilane (CPTMS) mediators following simultaneous thermally reduction of GO during the functionalization, to form rGO-Im for modification of gold electrode (GE). The sensing platform characterized by SEM, XRD, IR and Raman methods. The resulting rGO-Im-GE sensor, responded sensitively to nitrite concentrations within a wide linear range (1 to 1000 mu M) and indicated a relative low detection limit (LOD=0.28 mu M, S/N=3) without interfering with common ions existing in aqueous media. Furthermore acceptable recoveries were obtained when applying the proposed sensor to tap water samples.

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