Synthesis of nickel oxides nanoparticles on glassy carbon as an electron transfer facilitator for horseradish peroxidase: Direct electron transfer and H2O2 determination

Mohammadi, Ali; Moghaddam, Abdolmajid Bayandori; Kazemzad, Mahmood; Dinarvand, Rassoul; Badraghi, Jalil

doi:10.1016/j.msec.2009.01.029

Cited by 34 publications

(13 citation statements)

References 43 publications

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“…The voltammogram is characterized by the flattening of the anodic process due to the catalytic, and a significant magnification of the cathodic procedure related to the reduction of the oxidized form of the dopaquinone generated by the enzymatic reaction. The shape of these voltammograms is typical for catalytic redox processes taking place at the electrode solution interface, which has been broadly described in the literature 35.…”

Section: Resultsmentioning

confidence: 91%

Tyrosinase Biosensor for Antioxidants Based on Semiconducting Polymer Support

et al. 2016

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This study reports sensitive phenolic compounds detection using biosensing electrode constructed by immobilization of tyrosinase in an electrochemically synthesized copolymer based on N‐nonylcarbazole derivatives on a platinum (Pt) electrode. Tyrosinase has been successfully immobilized (electrolytic deposition) on the surface of thin film built of poly[2,7‐bis(selenophene)‐N‐nonylcarbazole] and poly[3,6‐bis(selenophene)‐N‐nonylcarbazole]. A well‐defined reduction current according to the phenolic compounds was observed in cyclic voltammetry, which assigned to the reduction of biocatalytically produced o‐quinones on the electrode surface. The immersion of the tyrosinase‐equipped electrode in solution with substrate generated large catalytic currents easily recorded by cyclic voltammetry. The response of the biosensing arrangement was estimated in the presence of catechol and L‐3,4‐dihydroxyphenylalanine (L‐DOPA). The system exhibits an explicit catalytic activity and the substrates can be amperometrically determined at +0.07 V vs. Ag/AgCl. The activation energy (Ea) of immobilized tyrosinase catalytic reaction was estimated as 24.65 kJ/mol in PBS buffer. The analytical properties of the developed biosensor, such as linear concentration range, sensitivity, detection limit and reproducibility, repeatibility were also evaluated. Considering the fact, that the immobilization policy proved high efficiency, the results suggest that the method for phenoloxidase immobilization has a big capacity of providing high throughput engineering of bioelectronic devices.

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Section: Resultsmentioning

confidence: 91%

Tyrosinase Biosensor for Antioxidants Based on Semiconducting Polymer Support

et al. 2016

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“…They can be used to promote electron transfer reactions when used as electrode materials in electrochemical devices [3,4]. Among the metal nanostructures, nickel oxide nanoparticles (NiONPs) has attracted much attention for development of modified electrodes due to their cost effectiveness, high electrocatalytic effect, biocompatibility, non-toxicity and high chemical stability [25,26]. Hitherto, there are no reports on NiONPs/Gr for the simultaneous determination of PCM and MFA.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Voltammetric Determination of Mefenamic Acid and Paracetamol using Graphene Nanosheets/Nickel Oxide Nanoparticles Modified Carbon Paste Electrode

Naeemy

Gholam-Shahbazi

Mohammadi

2017

J. Electrochem. Sci. Technol

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A new modified carbon paste electrode (CPE) was constructed based on nickel oxide nanoparticles (NiONPs) and graphene nanosheets (Gr) for simultaneous determination of paracetamol (PCM) and mefenamic acid (MFA) in aqueous media and pharmaceutical dosage forms. NiONPs were synthesized via a simple and inexpensive technique and characterized using X-ray diffraction method. Scanning electron microscopy was used for the characterization of the morphology of modified carbon paste electrode (NiONPs/Gr/CPE). Voltammetric studies suggest that the NiONPs and Gr provide a synergistic augmentation that can increase current responses by improvement of electron transfers of these compounds on the NiONPs/ Gr/CPE surface. Using cyclic voltammetry, the NiONPs/Gr/CPE showed good sensitivity and selectivity for the determination of PCM and MFA in individually or mixture standard samples in the linear range of 0.1-30 μg mL-1. The resulted limit of detection and limit of quantification were 20 and 60 ng mL-1 for PCM, 24 and 72 ng mL-1 for MFA, respectively. The analytical performance of the NiONPs/Gr/CPE was evaluated for the determination of PCM and MFA in pharmaceutical dosage forms with satisfactory results.

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“…Carbon nanotubes have been widely used in electrochemical studies, where carbon nanotube modified electrodes employed for sensing applications. Recent studies showed that modified electrodes by carbon nanotubes and other nanostructures could impart electrocatalytic activity to the electrochemical studies [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Application of Carbon Nanotube-Graphite Mixture for the Determination of Diclofenac Sodium in Pharmaceutical and Biological Samples

Bay¹,

Moghaddam²,

Mohammadi³

et al. 2012

Pharm Anal Acta

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In this study, the main purpose is to fabricate a sensitive and selective electrochemical sensor through the multiwalled carbon nanotube-graphite/Ag electrode (MWCNTs-G/Ag). The application of this sensor was developed for the determination of diclofenac sodium in pharmaceutical dosage form, urine and human plasma. MWCNTs-graphite mixture improved the electroactive surface area due to its porous structure and a remarkable increase in the peak currents was observed. It demonstrated a catalytic effect and speeded up the rate of redox process. Application of MWCNTs-G/Ag resulted in a sensitivity augmentation. It is found that a maximum current response for the sensor in the Britton-Robinson buffer solution can be obtained in pH 3. The prepared sensor showed good standard calibration curves during 3 consecutive days over the concentration range of 45-2000 ng/mL and RSD values ranging from 1.95-7.11%. The limit of quantitation and detection limit were 45 and 15 ng/mL, respectively.

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Synthesis of nickel oxides nanoparticles on glassy carbon as an electron transfer facilitator for horseradish peroxidase: Direct electron transfer and H2O2 determination

Cited by 34 publications

References 43 publications

Tyrosinase Biosensor for Antioxidants Based on Semiconducting Polymer Support

Tyrosinase Biosensor for Antioxidants Based on Semiconducting Polymer Support

Simultaneous Voltammetric Determination of Mefenamic Acid and Paracetamol using Graphene Nanosheets/Nickel Oxide Nanoparticles Modified Carbon Paste Electrode

Application of Carbon Nanotube-Graphite Mixture for the Determination of Diclofenac Sodium in Pharmaceutical and Biological Samples

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