Prussian blue solid-state films and membranes as potassium ion-selective electrodes

Organic Redox Probes for the Key Oxidation States in Mixed Valence Ruthenium Oxide/Cyanometallate (Ruthenium Prussian Blue Analogue) Catalysts

“…60 mV/decade) with an equal number of K /e À . The variation of A1/C1 was considered to intercalate with alkali metal ion similar to the PB redox characteristic reported earlier [38,39].…”

“…This observation is different to the effect of pH on both the RuOx [20,22,23] and PB electrodes [36,38,39]. The abrupt change in the response at pH 4 is reasonable since the À CN À linkage in PB structure is highly unstable under neutral and alkaline pHs.…”

Electrochemical Behavior of Stable Cinder/Prussian Blue Analogue and Its Mediated Nitrite Oxidation

“…Metal-hexacyanoferrate (MHCF, M ¼ Ca II , Mg II , Mn II , Zn II , Ti III , Fe III , Cr III , and Ni II )-modified ITO electrodes were prepared by potential cycling in the window from À0.3 to 1.3 V at 50 mV=s for 20 cycles with 2 mM metal þ FeðCNÞ 3À 6 in pH 2 KCl=HCl solution. Figure 1A shows the CV response of the cinder-CPE in 2 mM K 3 [Fe(CN) 6 ] þ pH 2, 0.1 M KCl=HCl solution at a scan rate of 50 mV=s. Two redox peaks, namely A1=C1 and A2=C2, at formal redox potentials (E f ) of 0.248 V and 0.855 V grow with the successive scans.…”

“…Prussian blue (PB), or iron(III) hexacyanoferrate, is a wellknown mixed valence iron-containing compound widely applied in the fields of electrocatalytsis, electrochromic display, energy storage & battery, photo-response, anticorrosion, photolysis of water, ion-selective electrodes, and artificial biosensor systems [1][2][3][4][5][6][7]. Recently, we have communicated the preparation route of a new cinder-PB chemically modified electrode by means of a prevalent electrochemical technique since the cinder modifier contains an appreciable amount of blacked iron ions in the bulk lattice [8].…”

Urea determination in FIA mode by a newly designed urease-based biosensor

“…Krishnan and coworkers [13] described the thin film of Prussian blue as a potassium-selective electrode. Preparation of biosensors for determination of ethanol and glucose on the surface of the NiHCF/Ni electrode was also reported [14,15].…”