Structural, morphological and electrochemical supercapacitive properties of sprayed manganese ferrite thin film electrode

Zate, Manohar K.; Jadhav, Vijaykumar V.; Gore, Shyam K.; Shendkar, Janardhan H.; Ekar, Satish; Al-Osta, Ahmed; Naushad, Mu.; Mane, Rajaram S.

doi:10.1016/j.jaap.2016.09.020

Cited by 38 publications

(6 citation statements)

References 55 publications

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“…The CV curves at all scan rates remained closed, indicating that surface charge had enough time to access the entire solution at both high and low scan rates [50]. Due to pseudo-capacitive behavior, redox peaks were seen in the CV curves [51]. The redox couple in all CV curves exhibited an increased current response with the increase of the scan rate from 10 to 150 mV/s.…”

Section: Resultsmentioning

confidence: 99%

Study on Electrochemical Degradation of Nicosulfuron by IrO2-Based DSA Electrodes: Performance, Kinetics, and Degradation Mechanism

Zhao

Zhang

Chen³

et al. 2019

IJERPH

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The widely used sulfonylurea herbicides have caused negative effects on the environment and human beings. Electrochemical degradation has attracted much attention in the treatment of refractory organic compounds due to its advantage of producing no secondary pollution. Three kinds of IrO2-based dimensionally stable anodes (DSAs) were used to degrade nicosulfuron by a batch electrochemical process. The results showed that a well-distributed crack network was formed on the Ti/Ta2O5-IrO2 electrode and Ti/Ta2O5-SnO2-IrO2 electrode due to the different coefficients of thermal expansion between the Ti substrate and oxide coatings. The oxygen evolution potential (OEP) increased according to the order of Ti/RuO2-IrO2 < Ti/Ta2O5-SnO2-IrO2 < Ti/Ta2O5-IrO2. Among the three electrodes, the Ti/Ta2O5-IrO2 electrode showed the highest efficiency and was chosen as the experimental electrode. Single factor experiments were carried out to obtain the optimum electrolysis condition, shown as follows: currency intensity 0.8 A; electrode spacing 3 cm, electrolyte pH 3. Under the optimum conditions, the degradation of nicosulfuron followed first-order kinetics and was mainly due to indirect electrochemical oxidation. It was a typical diffusion-controlled electrochemical process. On the basis of the intermediate identified by high performance liquid chromatograph-mass spectrometry (HPLC-MS), two possible degradation routes were proposed.

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Section: Resultsmentioning

confidence: 99%

Study on Electrochemical Degradation of Nicosulfuron by IrO2-Based DSA Electrodes: Performance, Kinetics, and Degradation Mechanism

Zhao

Zhang

Chen³

et al. 2019

IJERPH

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“…9b) of the same was recorded. The curves exhibit a semicircle at high and low frequency region, which corresponds to the charge transfer reaction at electrode/ electrolyte interface [37,38]. The PDPA/V 2 O 5 composite displayed a semicircle with smaller diameter than that of PDPA.…”

Section: Electrochemical Propertiesmentioning

confidence: 95%

Influence of medium on structure, morphology and electrochemical properties of polydiphenylamine/vanadium pentoxide composite

2019

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A facile, one-pot oxidative polymerization approach was used to synthesize polydiphenylamine (PDPA) and polydiphenylamine/vanadium pentoxide (PDPA/V 2 O 5 ) composite using APS as an oxidizing agent. The reactions were carried out in two different reaction media (i.e. aqueous and acidic). The influence of these two mediums on molecular structure, morphology and thermal stability was investigated using FTIR spectroscopy, X-ray diffraction, SEM-EDS and thermogravimetric analysis. The temperature dependent electrical conductivity and dielectric properties (dielectric loss and dielectric constant) of these materials were also conducted. These studies revealed that in aqueous medium PDPA/V 2 O 5 composite has formed however, in acidic medium only the PDPA polymer formed, suggesting different nature of V 2 O 5 in these two medium. The results also showed that the PDPA/V 2 O 5 composite has higher yield, good electrical conductivity, charge transport, dielectric losses and thermal properties as compared to that of PDPA. Furthermore, the electrochemical properties were evaluated by cyclic voltammetry, and electrochemical impedance spectroscopy and found that PDPA/ V 2 O 5 composite shows good electrochemical properties.

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“…An intercept at high frequency region with real axis of Z 0 is inner resistance (R s ) and distorted semicircle is charge-transfer resistance (R ct ) across the electrode-electrolyte interface. 24,25 From the tting equivalent circuit (inset of Fig. 5), it can be concluded that the R s of NiO thin lm electrode is about 0.89 U, while the R s of r-NiO is about 0.85 U.…”

Section: Electrochemical Performance Of Nio and R-nio Electrodesmentioning

confidence: 99%

Comparison of two different nickel oxide films for electrochemical reduction of imidacloprid

et al. 2020

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A nickel oxide (NiO) thin film was successfully prepared on Ni foil via a sol-gel method and a reduced state nickel oxide (r-NiO) thin film was obtained by etching NiO with hydrazine hydrate solution. Structure characterization through X-ray diffraction and scanning electron microscopy revealed the growth of nanostructure films on the surface of nickel foil. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy were used to assess the performance of the two films.Electroreduction of alkaline imidacloprid solution under potentiostatic conditions was carried out in a three-electrode system. The removal efficiencies of 80.2% (r-NiO) and 66.3% (NiO), and the current efficiencies of 67.3% (r-NiO) and 58.9% (NiO) were much higher than 41.7% (removal efficiency) and 0.003% (current efficiency) on the bare Ni electrode. This study prepared two novel thin films with composites of NiO or r-NiO, and thus provided feasible and efficient electrochemical degradation of imidacloprid. The degradation products were characterized and the possible degradation pathways were proposed.

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Structural, morphological and electrochemical supercapacitive properties of sprayed manganese ferrite thin film electrode

Cited by 38 publications

References 55 publications

Study on Electrochemical Degradation of Nicosulfuron by IrO2-Based DSA Electrodes: Performance, Kinetics, and Degradation Mechanism

Study on Electrochemical Degradation of Nicosulfuron by IrO2-Based DSA Electrodes: Performance, Kinetics, and Degradation Mechanism

Influence of medium on structure, morphology and electrochemical properties of polydiphenylamine/vanadium pentoxide composite

Comparison of two different nickel oxide films for electrochemical reduction of imidacloprid

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