Disposable, efficient and highly selective electrochemical sensor based on Cadmium oxide nanoparticles decorated screen-printed carbon electrode for ascorbic acid determination in fruit juices

Gopalakrishnan, Arthi; Sha, Rinky; Vishnu, Nandimalla; Kumar, R. Thilak; Badhulika, Sushmee

doi:10.1016/j.nanoso.2018.05.004

Cited by 48 publications

(17 citation statements)

References 38 publications

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“…Electro‐oxidation of AA is explained in Scheme . Ascorbic acid oxidizes to dehydroascorbic acid with two oxidation steps, which at the total donates the two 2H + ions and 2e − …”

Section: Resultsmentioning

confidence: 99%

Electrochemical Determination of Ascorbic Acid Based on AgNPs/PVP‐Modified Glassy Carbon Electrode

Karaboduk

2019

ChemistrySelect

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The electrochemical determination of ascorbic acid was carried out at the surface of glassy carbon electrode (GCE) modified by silver nanoparticles (AgNPs):Polyvinylpyrrolidone (PVP). Nanocomposite was evaluated by fourier transform infrared spectroscopy, zeta potential, and X‐ray diffraction. Also, the surface morphologies of the developed electrode were investigated by scanning electron microscopy, and profilometer. The electrochemical performance of AgNPs/PVP/GCE was studied with cyclic voltammetry and electrochemical impedance spectroscopy measurements. The electrochemical studies demonstrated that the electrode had a large surface. Compared with the bare GCE, PVP/GCE, and AgNPs/GCE, the AgNPs/PVP‐modified GCE showed excellent performance for the electrochemical determination of ascorbic acid. At the optimized conditions of differential pulse voltammetry in pH 6.0 of phosphate buffer solution, the modified electrode allowed the determination of ascorbic acid on a potential of 0.54 V vs. Ag/AgCl. Under optimized conditions, the low detection limit of 0.047 μM and working range of 0.2‐1200 μM were obtained at the AgNPs/PVP/GCE. The AgNPs/PVP/GCE allowed to obtain highest peak current values at low concentrations. Moreover, the fabricated electrode also exhibited good repeatability, reproducibility, and stability. The developed electrode was successfully enforced for the analysis of ascorbic acid in banana, kiwi fruit, mango, and pineapple.

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“…Electro‐oxidation of AA is explained in Scheme . Ascorbic acid oxidizes to dehydroascorbic acid with two oxidation steps, which at the total donates the two 2H + ions and 2e − …”

Section: Resultsmentioning

confidence: 99%

Electrochemical Determination of Ascorbic Acid Based on AgNPs/PVP‐Modified Glassy Carbon Electrode

Karaboduk

2019

ChemistrySelect

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“…Asam askorbat merupakan senyawa memiliki peranan penting dalam tubuh sebagai antioksidan yang mampu menghambat oksidasi zat [4]. Kekurangan asam askorbat pada tubuh dapat menyebabkan tubuh mengalami lemah otot dan juga anemia serta apabila kelebihan asam askorbat juga akan menyebabkan ganguan pada perut [5].…”

Section: Pendahuluanunclassified

Fabrikasi dan Karakterisasi Sensor Elektrokimia Asam Askorbat Berbasis Teknologi Film Tebal dengan Menggunakan Elektroda Pasta Karbon

2020

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Fabrikasi sensor elektrokima asam askorbat berbasi filem tebal telah berhasil dilakukan dengan menggunakan pasta kerbon sebagai elektroda kerja yang tercetak di permukaan subtrat alumina. Proses pendeteksian sensor dilakukan dengan teknik siklik voltametri dengan menvariasikan konsentrasi larutan asam askorbat. Sensor elektroda yang difabrikasi menunjukkan puncak oksidasi asam askobat pada potensial 0,2 V terhadap elektroda Ag/AgCl. Hasil siklik voltemetri menunjukkan puncak arus oksidasi yang meningkat seiring dengan kenaikan konsentsi yang di berikan. Dari data asrus di peroleh hasil karakterisasi dengan kelinieritasn sensor sebesar 0,7799, presisi 10,6 s/d 26,3 %, sensitivitas 1,65329x10-8 A/µM.cm2, dan keakurasian 83 s/d 152,62 %.

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“…The estimated j 0 value of CQD modified electrode (147 μAcm −2 ) is about 16 folds higher than that of the bare GCE (8.93 μA cm −2 ). Lower Rct and higher j 0 values indicate that CQD acts as an excellent electrochemical sensing platform for detection of analytes .…”

Section: Figurementioning

confidence: 99%

A Novel Biomass Derived Carbon Quantum Dots for Highly Sensitive and Selective Detection of Hydrazine

et al. 2018

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Disposable, efficient and highly selective electrochemical sensor based on Cadmium oxide nanoparticles decorated screen-printed carbon electrode for ascorbic acid determination in fruit juices

Cited by 48 publications

References 38 publications

Electrochemical Determination of Ascorbic Acid Based on AgNPs/PVP‐Modified Glassy Carbon Electrode

Electrochemical Determination of Ascorbic Acid Based on AgNPs/PVP‐Modified Glassy Carbon Electrode

Fabrikasi dan Karakterisasi Sensor Elektrokimia Asam Askorbat Berbasis Teknologi Film Tebal dengan Menggunakan Elektroda Pasta Karbon

A Novel Biomass Derived Carbon Quantum Dots for Highly Sensitive and Selective Detection of Hydrazine

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