Nickel, copper and manganese hexacyanoferrate with poly(3,4-ethylenedioxythiophene) hybrid film modified electrode for selectively determination of ascorbic acid

Abstract

The NiHCF PEDOT, CuHCF PEDOT and MnHCF PEDOT films were prepared on glassy car bon electrode (GCE) by multiple scan cyclic voltammetry and characterized using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and scanning electron microscope (SEM) techniques. The advantages of these films are demonstrated for selectivity detection of ascorbic acid using cyclic voltammetry and amperometric method. Interestingly, the NiHCF PEDOT and CuHCF PEDOT modified electrodes exhibited a wide linear response range (5 × 10 -6 -3 × 10 -4 M, R 2 = 0.9973 and 1.8 × 10 -3 -1.8 × 10 -2 M, R 2 = 0.9924). The electrochemical sensors facilitated the oxidation of AA but not responded to other electroac tive biomolecules such as dopamine, uric acid, H 2 O 2 , glucose. The difference is MnHCF PEDOT/GCE that no response to AA. In addition, the NiHCF PEDOT and CuHCF PEDOT modified electrodes exhibited a distinct advantage of simple preparation, specificity, stability and reproducibility.

Nanopalladium grained polymer nanocomposite based sensor for the sensitive determination of Melatonin

“…Various types of electrodes with different types of surface modifications have been used as a working electrode in the electrochemical analysis of MEL including carbon paste electrodes [42], carbon disc electrode [43], boron-doped diamond (BDD) electrode [44], manganese hexacyanoferrate (MnHCF) mixed-valent poly (3, (PEDOT) hybrid film modified glassy carbon electrode [45], BT-drug membrane sensors [46], glassy carbon electrode [47], RGO/RuO2/GCE [48] etc. However, the previously reported sensors have a limitation of small linear concentration range, higher limits of detection, complex modifications and in some cases high cost like BDD electrode.…”

Electropolymerized Diphenylamine on Functionalized Multiwalled Carbon Nanotube Composite Film and Its Application to Develop a Multifunctional Biosensor

“…The corresponding linear regression equations were found as I pa1 (µA)=0.637 v (V/s)+59.8, R 2 =0.986, I pc1 (µA)=−0.621 v (V/s)+66.6, R 2 =0.983, I pa2 (µA)=0.436v (V/s)−5.1, R 2 =0.998 and I pc2 (µA)=−0.157 v (V/s)−8.9, R 2 =0.994. Here, the linear increase in the anodic and cathodic peak currents of PDPA‐AFCNT/GCE according to the scan rate revealed that the film exhibited the typical characteristics of surface controlled thin‐layer electrochemical behavior 28, 30.…”

“…Conductive/electroactive polymers, such as polypyrrole, polyaniline (PANI), polythiophene, etc. 23–27 are prepared through an electropolymerization procedure and used as modifiers for the construction of chemically modified electrodes 28–30. Among various conducting polymers, poly(diphenylamine) (PDPA) is new and shows many properties that are not comparable with other N‐substituted PANI’s, which include electrochemistry, conductivity, and electrochromic behavior 31.…”

Controlled electrochemical synthesis of yttrium (III) hexacyanoferrate micro flowers and their composite with multiwalled carbon nanotubes, and its application for sensing catechin in tea samples

“…Besides, electrode surfaces modified with CA film have been used for various applications [32,33]. So far, various techniques such as HPLC [34,35], gas chromatography [36], spectrophotometry [37], biomimetic sensor [38], and electrochemical methods [39,40] have been employed for the detection of CA. Though different techniques have been used for the determination of CA, electrochemical analysis is reliable and cost-effective, which allows for the fast detection [41].…”