Amperometric assay of hydrazine utilizing electro-deposited cobalt hexacyanoferrate nanocrystals on graphene oxide sheets
MAMTA YADAV VELLAICHAMY GANESAN RUPALI GUPTA DHARMENDRA KUMAR YADAV PIYUSH KUMAR SONKAR
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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$^{2+}$ is immobilized on GO and the resulting material, GO-Co$^{2+}$ is coated on the surface of glassy carbon (GC) electrode. The fabricated electrode (GC/GO-Co$^{2+}$) 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 thisphenomenon is subsequently utilized for the sensitive determination of hydrazine in aqueous solutions. It exhibits a wide linear calibration range (0.1–400 $\mu$M), high sensitivity (0.93 $\mu$A $\mu$M$^{-1}$ cm$^{-2}$) and low limit of detection (17.5 nM) for the determination of hydrazine. Further, this electrode is employed for hydrazine determination in real samples.
MAMTA YADAV1 VELLAICHAMY GANESAN1 RUPALI GUPTA1 DHARMENDRA KUMAR YADAV1 PIYUSH KUMAR SONKAR
Volume 45, 2022
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Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020
Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020
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