Electrocatalytic oxidation of l-tyrosine at carboxylic acid functionalized multi-walled carbon nanotubes modified carbon paste electrode

D’Souza, Ozma J.; Mascarenhas, Ronald J.; Satpati, Ashis Kumar; Aiman, Lorraine V.; Mekhalif, Zineb

doi:10.1007/s11581-015-1552-6

Cited by 36 publications

(13 citation statements)

References 48 publications

(45 reference statements)

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“…The slope of the line for DA and UA was 55 and 41 mV pH À 1 , respectively, which was close to the Nernst value [13,[51][52][53]. Therefore, the number of protons involved equalled the number of electrons throughout the oxidation process [54][55].…”

Section: Electrochemical Behaviour Of Da and Ua On The Hnacsupporting

confidence: 73%

Amorphous Carbon Film with Self‐modified Carbon Nanoparticles Synthesized by Low Temperature Carbonization of Phenolic Resin for Simultaneous Sensing of Dopamine and Uric Acid

Wang

et al. 2021

Electroanalysis

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A self-modified film electrode consisting of homogeneous snowflake-shaped nanoparticles on the amorphous carbon substrate (HNAC) was prepared by low temperature carbonization of phenolic resin. Such a unique structure was beneficial to enhance the electroanalysis signal responds. Simultaneous detection of DA and UA was performed on the HNAC using differential pulse voltammetry (DPV) at pH 8 phosphate buffer. The well-defined oxidation peak potential separation reached 260 mV between DA and UA. Meanwhile, the detection limit of HNAC were 0.401 μM (DA) and 2.800 μM (UA).

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Section: Electrochemical Behaviour Of Da and Ua On The Hnacsupporting

confidence: 73%

Amorphous Carbon Film with Self‐modified Carbon Nanoparticles Synthesized by Low Temperature Carbonization of Phenolic Resin for Simultaneous Sensing of Dopamine and Uric Acid

Wang

et al. 2021

Electroanalysis

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“…The bare carbon paste electrode (CPE) was prepared as described elsewhere . Three sets of modified electrodes were prepared by the following procedures.…”

Section: Methodsmentioning

confidence: 99%

Application of a Nanosensor Based on MWCNT‐Sodium Dodecyl Sulphate Modified Electrode for the Analysis of a Novel Drug, Alpha‐Hydrazinonitroalkene in Human Blood Serum

et al. 2017

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The sensitivity enhancing properties of sodium dodecyl sulphate (SDS) and multi‐walled carbon nanotubes (MWCNTs) were associated to construct a nanosensor based on carbon paste electrode (CPE) by adopting drop cast method. The drop cast method makes use of minimum modifier and the entire modified surface of the sensor is available for the analyte. Surface characterization of the electrodes was carried out using FE‐SEM and EDX. EIS was used for the electrochemical characterization. We report for the first time the electrochemical analysis based on the oxidation of the ‐OH group of a novel drug, alpha‐hydrazinonitroalkene (I) which was found to have antibacterial and antimicrobial properties. The electron transfer kinetic parameters such as the charge transfer coefficient α and heterogeneous rate constant k′ were calculated and they have been found to be 0.64 and 9.62 × 10−2 cm s−1 respectively. The linear response ranges for (I) obtained at this sensor are 1.0 × 10−7 M − 7.0 × 10−7 M and 1.0 × 10−6 M – 4.5 × 10−5 M with a detection limit of (7.03 ± 0.41) × 10−8 M (S/N=3). The interference study suggested that the sensor was free from 1000‐fold excess of UA in the determination of (I). It was important to note that the sensor completely eliminated Ascorbic acid (AA) signal which offered a significant analytical advantage for the determination of the drug at this sensor. The practical usefulness of the modified sensor was demonstrated by the analysis of (I) in blood serum.

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“…In such cases, chemical functionalization may be used to adjust CNT properties for the application in question. For example, a better dispersion may be achieved by CNTs' functionalization [172].…”

Section: Carbon Nanotubes-modified Electrodesmentioning

confidence: 99%

Carbonaceous Nanomaterials Employed in the Development of Electrochemical Sensors Based on Screen-Printing Technique—A Review

Bounegru

Apetrei

2020

Catalysts

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This paper aims to revise research on carbonaceous nanomaterials used in developing sensors. In general, nanomaterials are known to be useful in developing high-performance sensors due to their unique physical and chemical properties. Thus, descriptions were made for various structural features, properties, and manner of functionalization of carbon-based nanomaterials used in electrochemical sensors. Of the commonly used technologies in manufacturing electrochemical sensors, the screen-printing technique was described, highlighting the advantages of this type of device. In addition, an analysis was performed in point of the various applications of carbon-based nanomaterial sensors to detect analytes of interest in different sample types.

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Electrocatalytic oxidation of l-tyrosine at carboxylic acid functionalized multi-walled carbon nanotubes modified carbon paste electrode

Cited by 36 publications

References 48 publications

Amorphous Carbon Film with Self‐modified Carbon Nanoparticles Synthesized by Low Temperature Carbonization of Phenolic Resin for Simultaneous Sensing of Dopamine and Uric Acid

Amorphous Carbon Film with Self‐modified Carbon Nanoparticles Synthesized by Low Temperature Carbonization of Phenolic Resin for Simultaneous Sensing of Dopamine and Uric Acid

Application of a Nanosensor Based on MWCNT‐Sodium Dodecyl Sulphate Modified Electrode for the Analysis of a Novel Drug, Alpha‐Hydrazinonitroalkene in Human Blood Serum

Carbonaceous Nanomaterials Employed in the Development of Electrochemical Sensors Based on Screen-Printing Technique—A Review

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