Selective electrochemical sensing for arsenite using rGO/Fe3O4 nanocomposites

Devi, Pooja and Sharma, Chhavi and Kumar, Praveen and Kumar, Mahesh and Bansod, B.S. and Nayak, M.K. and Singla, M.L. (2017) Selective electrochemical sensing for arsenite using rGO/Fe3O4 nanocomposites. Journal of Hazardous Materials, 322 (A). pp. 85-94. ISSN 0304-3894

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Herein, we report rGO/Fe3O4 nanocomposites (NCs) free from noble metals, synthesized by facile one step chemical reduction method, for electrochemical detection of arsenite in water by square wave anodic stripping Voltammetry (SWASV). The synthesized NCs were characterized for its optical, morphological and structural properties. The NCs modified glassy carbon (GCE), NCs/GCE, electrodes showed a higher sensitivity (0.281 μA/ppb) and lower LOD (0.12 ppb) under optimized experimental conditions. The proposed NCs/GCE electrodes show no interference towards arsenite species in the presence of common cationic interferants, namely, Cu(II), Pb(II), Ni(II), Co(II), Cd(II), Cr(II), Zn(II), etc. In addition, the proposed electrode demonstrates a good stability, reproducibility and potential practical application in electrochemical detection of arsenite.

Item Type: Article
Uncontrolled Keywords: Arsenite; rGO/Fe3O4; Nanocomposites; Stripping voltammetry
Subjects: CSIO > Agri - Instrumentation
CSIO > Chemistry
Divisions: Agri - Instrumentation
Depositing User: Ms. Jyotsana
Date Deposited: 09 Aug 2018 11:54
Last Modified: 09 Aug 2018 11:54

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