Electrochemical Detection of Hydrazine by Carbon Paste Electrode Modified with Ferrocene Derivatives, Ionic Liquid, and CoS₂-Carbon Nanotube Nanocomposite

Abstract

The electrocatalytic performance of carbon paste electrode (CPE) modified with ferrocene-derivative (ethyl2-(4-ferrocenyl­[1,2,3]­triazol-1-yl)­acetate), ionic liquid (n-hexyl-3-methylimidazolium hexafluorophosphate), and CoS2-carbon nanotube nanocomposite (EFTA/IL/CoS2-CNT/CPE) was investigated for the electrocatalytic detection of hydrazine. CoS2-CNT nanocomposite was characterized by field emission scanning electron microscopy, X-ray powder diffraction, and transmission electron microscopy. According to the results of cyclic voltammetry, the EFTA/IL/CoS2-CNT-integrated CPE has been accompanied by greater catalytic activities for hydrazine oxidation compared to the other electrodes in phosphate buffer solution at a pH 7.0 as a result of the synergistic impact of fused ferrocene-derivative, IL, and nanocomposite. The sensor responded linearly with increasing concentration of hydrazine from 0.03 to 500.0 μM with a higher sensitivity (0.073 μA μM–1) and lower limit of detection (LOD, 0.015 μM). Furthermore, reasonable reproducibility, lengthy stability, and excellent selectivity were also attained for the proposed sensor. Finally, EFTA/IL/CoS2-CNT/CPE was applied for the detection of hydrazine in water samples, and good recoveries varied from 96.7 to 103.0%.

Electrochemical Sensor Based on ZnFe2O4/RGO Nanocomposite for Ultrasensitive Detection of Hydrazine in Real Samples

“…The real specimens included river, drinking, and tap water samples, which were filtered thoroughly before analysis and diluted with 0.1 M PBS with dilution factor of 1:4. Then different hydrazine concentrations were added to the specimens and analysis with standard addition method [ 9 ].…”

“…Such techniques involve complex processes with relatively narrow linear ranges and low accuracy. Electrochemical methods are fast, highly sensitive, selective, cost-effective and enable portable devices [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. Hence, we select these methods for hydrazine detection in the present study.…”

Hydroxyapatite/L-Lysine Composite Coating as Glassy Carbon Electrode Modifier for the Analysis and Detection of Nile Blue A

“…In these fields, Materials 2022, 15, 4262 2 of 17 solid electrodes chemically modified by convenient inorganic materials, likely to display great affinity for a target species, are usually used. Some common examples of such materials are silica [13,14], clay minerals [15,16], various carbon derivatives [17][18][19][20], and metal oxides [21,22]. Furthermore, additional studies also have highlighted the use of conjugated organic polymers (conductive polymers) as electrode modifiers in the fabrication of modified electrodes for the electroanalysis of various analytes [23,24].…”

Constructing and electrochemical performance of AuNPs decorated MIL-53 (Fe, Ni) MOFs–derived nanostructures for highly sensitive hydrazine detection

“…However, the performance of existing electrochemical sensors mainly depends on the sensing electrode materials. Direct electrochemical detection of hydrazine using the traditional electrodes (unmodified electrodes) usually exist the problem of higher oxidation overpotential, which limits the capability of hydrazine detection [11]. Therefore, different functionalization sensing nanomaterials were chemically modified on the traditional glassy carbon electrodes to improve their performances for hydrazine detection [12].…”