Preparation and characterization of electrochemical and electrocatalytic behavior of a zinc pentacyanonitrosylferrate film-modified glassy carbon electrode

Electrochemical Behavior of a Glassy Carbon Electrode Chemically Modified with Nickel Pentacyanonitrosylferrate in Presence of Sulfur Compounds

“…This pH-dependent behavior is consistent with the similar case in the literature [2,11,13]. In the face of successive scans in BR buffer pH 9.0 with 0.5 mol L À1 KNO 3 and a scan rate of 100 mV s À1 observed the degradation of NiPCNF/GC and the formation of other redox couple.…”

“…According to the literature, the PCNF complexed to metals (MPCNF) has been used for electrocatalytic oxidation of various compounds such as: sulfite [1], thiosulfate [12], hydrazine [13], ascorbic acid [14], dopamine [15], iodine [16] and nitrite [17]. However, studies of CMEs with MPCNF have been conducted using carbon composites electrodes (CCE) [1,18,19] and films on various substrates: glassy carbon (GC) [11][12][13][14]20], aluminum [3,16,21], mercury [22] and platinum [23], while the latter two substrates are not used very often.…”

Electrooxidation of sulfide by cobalt pentacyanonitrosylferrate film on glassy carbon electrode by cyclic voltammetry

“…The pentacyanonitrosylferrate (PCNF) anion, or nitroprusside, has attracted much attention in the preparation of modified carbon composite electrodes [10,11] and of thin films on electrodes over the last few years [12][13][14][15][16][17][18][19][20][21] because it shows reversible electron transfer and may be immobilized on the surface of electrodes [22].…”

Preparation and Characterization of a Tin Pentacyanonitrosylferrate‐Modified Carbon Ceramic Electrode: Application to Electrocatalytic Oxidation and Amperometric Detection of L‐Cysteine

“…This may be attributed to the NP(II)/NP(III) redox system but at high potentials any redox peak is no discernible. The electrochemical behavior of NP was reported elsewhere [49,50], that showed very complex properties due to its change by solution pH and via releasing of HCN, H þ abstraction, and electron withdrawing property of nitrosyl group bounded to Fe(II). The cyclic voltammogram of SnPCNF modified CCE in 0.5 M KNO 3 þ 0.25 M acetate buffer solution of pH 4 (curve b) shows two redox couples with formal potentials of 0.15 and 0.70 V vs. SCE.…”