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Amperometric assay of hydrazine utilizing electro-deposited cobalt hexacyanoferrate nanocrystals on graphene oxide sheets.
- Source :
- Bulletin of Materials Science; 2020, Vol. 43 Issue 1, p1-11, 11p
- Publication Year :
- 2020
-
Abstract
- In-situ electrochemical deposition of cobalt hexacyanoferrate (CoHCF) on graphene oxide (GO) and its application for the electrocatalytic hydrazine determination in real samples are described in this research study. Co<superscript>2+</superscript> is immobilized on GO and the resulting material, GO-Co<superscript>2+</superscript> is coated on the surface of glassy carbon (GC) electrode. The fabricated electrode (GC/GO-Co<superscript>2+</superscript>) is subjected to a continuous potential cycling in the range of 0.0–1.0 V which results in the formation of a thin CoHCF film on the surface of GO coated on the GC electrode (abbreviated as GC/GO-CoHCF). The synthesized GO-CoHCF composite material is characterized by Fourier transform infrared and scanning electron microscopy. GC/GO-CoHCF electrode electrocatalytically oxidizes hydrazine at low overpotential (0.63 V) and this phenomenon is subsequently utilized for the sensitive determination of hydrazine in aqueous solutions. It exhibits a wide linear calibration range (0.1–400 µM), high sensitivity (0.93 µA µM<superscript>−1</superscript> cm<superscript>−2</superscript>) and low limit of detection (17.5 nM) for the determination of hydrazine. Further, this electrode is employed for hydrazine determination in real samples. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02504707
- Volume :
- 43
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Bulletin of Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 145376959
- Full Text :
- https://doi.org/10.1007/s12034-020-02219-y