Graphene oxide amplified electrochemiluminescence of graphitic carbon nitride and its application in ultrasensitive sensing for Cu(2+).
Anal Chim Acta
; 891: 113-9, 2015 Sep 03.
Article
em En
| MEDLINE
| ID: mdl-26388369
ABSTRACT
Here for the first time, we present a novel electrochemiluminescence (ECL) sensor based on graphitic carbon nitride/graphene oxide (g-C3N4/GO) hybrid for the ultrasensitive detection of Cu(2+), which is a common pollutant in environmental system. The g-C3N4/GO shows stable ECL signal in the presence of the self-produced coreactant from oxygen reduction, and the ECL signal could be effectively quenched by Cu(2+), the possible ECL detection mechanism has been proposed in detail. GO can not only significantly enhance the cathodic ECL signal of g-C3N4 (â¼3.8 times), but also serve as immobilization platform for g-C3N4. After optimization of experimental conditions, the proposed protocol can offer an ultrasensitive, highly selective and recyclable method for the detection of Cu(2+) with a low detection limit of 1.0 × 10(-11) M and a wide linear range from 1.0 × 10(-11) to 1.0 × 10(-7) M. Moreover, the practicability of the ECL sensor in real wastewater samples is also tested, showing that the proposed ECL sensor could be a promising alternative method for the emergency and routine monitoring of Cu(2+) in real sample.
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Base de dados:
MEDLINE
Assunto principal:
Óxidos
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Cobre
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Técnicas Eletroquímicas
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Águas Residuárias
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Grafite
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Medições Luminescentes
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Nitrilas
Tipo de estudo:
Evaluation_studies
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Guideline
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article