Devi P, Sharma C, Kumar P, Kumar M, Bansod BKS, Nayak MK, Singla ML. Selective electrochemical sensing for arsenite using rGO/Fe
3O
4 nanocomposites.
JOURNAL OF HAZARDOUS MATERIALS 2017;
322:85-94. [PMID:
27021430 DOI:
10.1016/j.jhazmat.2016.02.066]
[Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 02/12/2016] [Accepted: 02/27/2016] [Indexed: 06/05/2023]
Abstract
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 (0.281μA/ppb) and lower LOD (0.12ppb) 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.
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