Abstract
Iron nitroprusside (FeNP) particles have been synthesized from drop by drop (n-FeNP) and bulk mixing (BM) (b-FeNP) methods. FeNP particles obtained from both methods were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). n-FeNP particles were used in constructing modified carbon paste electrode (CPE), which has been further used for electrochemical studies. The effect of pH and electrolyte cation on the electrochemical behavior of n-FeNP modified CPE has been studied in detail. Oxidation of nitrite and reduction of peroxodisulfate reactions have been electrocatalyzed at two redox centers of n-FeNP modified CPE. Based on the electrochemical experiments conducted and Tafel plots, mechanism for both the reactions has been proposed. Both the analytes were estimated in soil and ground water samples using n-FeNP modified CPE and the results were validated with the help of standard methods.
Highlights
Peroxodisulfate is used in several industries for various purposes such as chemical etching in the electronics industry, for pulp and paper processing in paper industry, in primary components of consumer products such as hair coloring, swimming pool treatment products and used in food additives as a flour treatment agent
Cadmium nitroprusside has been electrodeposited on glassy carbon electrode (GCE) and the various parameters influencing its electrochemical behavior were studied in detail.[43]
Synthesized FeNP was characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM) to obtain the information about their phase purity, surface morphology and size of the particles
Summary
Peroxodisulfate is used in several industries for various purposes such as chemical etching in the electronics industry, for pulp and paper processing in paper industry, in primary components of consumer products such as hair coloring, swimming pool treatment products and used in food additives as a flour treatment agent. Cadmium nitroprusside has been electrodeposited on glassy carbon electrode (GCE) and the various parameters influencing its electrochemical behavior were studied in detail.[43] Conducting surfaces like glassy carbon or aluminum electrodes are generally used for the electrodeposition of wide variety of metal nitroprussides from the aqueous solution containing a mixture of metal ion and nitroprusside ion or any one of them Those modified electrodes were used for sensing sulfide, iodide, hydrazine, ascorbic acid, dopamine, etc.[44,45,46,47,48] Carbon ceramic electrodes have been constructed using lead and tin nitroprussides as the modifiers and used for the detection of L-cysteine and hydrogen peroxide.[49,50] It is clear that metal nitroprussides undergo reversible electron transfer and got wide applications like Prussian Blue and its analogues. Scanning electron micrographs (SEM) were obtained using Quanta-200 scanning electron microscope by dispersing sample on a conducting carbon tape
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