On the ability of metal-nitroprusside complexes as electrode modifiers: Characterization and electrochemical study of palladized aluminum electrode modified with iron pentacyanonitrosylferrate

Mixed Ni2+Co2+ Transition Metal Nitroprusside: Determination of Its Electrochemical Behavior and Electrocatalytic Activity towards the Oxidation of Phenylhydrazine

“…According to several reports, [27–30] the electrochemistry of transition metal nitroprussides is due not only to the redox character of the molecular block [Fe II (CN) 5 (NO)] 2− but also to the possibility of electron transfer form electroactive transition metals in the outer‐coordination sphere. In addition to, the NO + moiety is a non‐innocent ligand which is susceptible to irreversible reduction, hence the instability of the nitroprusside anion at negative applied potentials (Figure S5) [31–33] . Some authors have even suggested that the electrocatalytic activity of transition metal nitroprussides is due to the formation of Prussian blue species during its activation [31] .…”

“…In addition to, the NO + moiety is a non-innocent ligand which is susceptible to irreversible reduction, hence the instability of the nitroprusside anion at negative applied potentials (Figure S5). [31][32][33] Some authors have even suggested that the electrocatalytic activity of transition metal nitroprussides is due to the formation of Prussian blue species during its activation. [31] It is worth mentioning that the electrochemical behavior of both nickel nitroprusside (NiNP) and cobalt nitroprusside (CoNP) have been known for more than 10 years.…”

“…[31][32][33] Some authors have even suggested that the electrocatalytic activity of transition metal nitroprussides is due to the formation of Prussian blue species during its activation. [31] It is worth mentioning that the electrochemical behavior of both nickel nitroprusside (NiNP) and cobalt nitroprusside (CoNP) have been known for more than 10 years. When KNO 3 is used as supporting electrolyte, CoNP exhibits a redox wave located at around 0.5 V, [34,35] while NiNP present its redox wave at around 0.8 V. [36] In addition to the determinations at pH 7, we have also demonstrated that the electrochemistry of this NiCoNP material is not stable in PBS at pH = 8 (Figure S6), as expressed by the appearance of new electrochemical signals in the CV, likely due to the hydrolysis of the compound.…”

Electrocatalitic Detection of Hydrazine Using Chemically Modified Electrodes with Cobalt Pentacyanonitrosylferrate Adsorbed on the 3–Aminopropylsilica Surface

“…Several organic and inorganic electroactives species are used in the preparation of modified electrodes, among them worth mentioning the cyanoferrates as hexacyanoferrates (HCF) and pentacyanonitrosylferrates (PCNF) (Dastangoo & Poureshghi, 2015). These compounds are represented by the structure [Fe III (CN) 5 L] -2 , were L is CN or NO wich exhibits reversible electron transfer and has been cleverly immobilized on the surface of electrodes (Dastangoo & Poureshghi, 2015;Sakthivel, Sivakumar, Chen, & Lun-Cheng, 2016).…”

“…These compounds are represented by the structure [Fe III (CN) 5 L] -2 , were L is CN or NO wich exhibits reversible electron transfer and has been cleverly immobilized on the surface of electrodes (Dastangoo & Poureshghi, 2015;Sakthivel, Sivakumar, Chen, & Lun-Cheng, 2016). 2005); hydrazine (Costa et al, 2010;Jayasri & Narayanan, 2007;Luo et al, 2015); ascorbic acid (Razmi & Harasi, 2008) and dopamine (Razmi, Agazadeh, & Habibi-A.…”