Determination of Riboflavin at Carbon Nanotube Paste Electrodes Modified with an Anionic Surfactant

Tigari, Girish; Manjunatha, Jamballi G.; Raril, Chenthattil; Hareesha, N.

doi:10.1002/slct.201803191

Cited by 62 publications

(11 citation statements)

References 38 publications

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“…Poly-L-leucine modified carbon paste electrode DPV [d] CV [b] 2-50 2-140 0.034 0.0402 [36] 9. SLS modified Carbon nanotube Paste electrode CV [b] 2.0-200.0 0.925 [37] 10.…”

Section: Calibration Plot and Detection Of Limitmentioning

confidence: 99%

Mechanistic Insights into the Voltammetric Determination of Riboflavin at Poly (Serine) Modified Graphite and Carbon Nanotube Composite Paste Electrode

et al. 2021

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Intense present work is directed on the fabrication and application of Poly (serine) modified graphite carbon nanotube composite paste electrode (PSR/CNTPE) for determining the Riboflavin (RF). The surface qualities of the projected sensor were observed by Field Emission Scanning Electron Microscopy (FE-SEM) and the conductivity by Electrochemical Impedance Spectroscopy (EIS) method. The electrochemical redox activity of the PSR/CNTPE to RF was investigated through Cyclic Voltammetry (CV) and Differential Pulse Voltammetry (DPV). Outcomes displays that Poly (serine) in CNTPE enhanced the catalytic performance of the electrode towards the redox reaction of RF. The voltammetric response of PSR/CNTPE exhibited linear dependence for extended concentration range of RF from 6 μM to 50 μM with lower detection limit of 3.4 × 10 À 8 M.The PSR/CNTPE revealed to be reproducible, highly stable and successfully validated for the pharmaceutical, beverage and milk samples. The fabricated electrode was conducive and displayed two well-separated oxidation signals for the solution containing two vitamins RF and Folic Acid (FA). The projected sensor is an adequate candidate for electrochemical sensing of RF.

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“…Poly-L-leucine modified carbon paste electrode DPV [d] CV [b] 2-50 2-140 0.034 0.0402 [36] 9. SLS modified Carbon nanotube Paste electrode CV [b] 2.0-200.0 0.925 [37] 10.…”

Section: Calibration Plot and Detection Of Limitmentioning

confidence: 99%

Mechanistic Insights into the Voltammetric Determination of Riboflavin at Poly (Serine) Modified Graphite and Carbon Nanotube Composite Paste Electrode

et al. 2021

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“…The linear regression equation produced was E pa =0.068 pH+1.390 having R=0.996. The slope value 0.068 V/pH, which is almost nearer to the Nernst value (0.059 V/pH) for the involvement of identical number of H + ions and electrons in the electrochemical reaction The suggested oxidation mechanism of CFX is shown in Scheme .…”

Section: Resultsmentioning

confidence: 61%

The Electrochemical Resolution of Ciprofloxacin, Riboflavin and Estriol Using Anionic Surfactant and Polymer‐Modified Carbon Paste Electrode

2019

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In the current study, a novel electrode was prepared by utilizing electropolymerization as well as immobilization technique for the resolution of antibacterial drug Ciprofloxacin (CFX). Cyclic voltammetric (CV) technique was adopted to explore the properties of poly(Evans blue) sodium dodecyl sulphate doubly modified carbon paste electrode (PEBSDSMCPE). A significant enhancement in the electrochemical activity was observed at modified electrode compared to bare carbon paste electrode (BCPE). The effect of variation in sweep rate was also performed to evaluate the total number of electrons transferred during the oxidation of CFX. The mass transfer process taking place at the electrode surface was also examined and it was found to be controlled by diffusion phenomena. Under optimized circumstances the limit of detection (LOD) and quantification limit (LOQ) were achieved to be 1.83×10−7 M and 6.11×10−7 M respectively. PEBSDSMCPE was successfully utilized for the selective determination of CFX, Riboflavin (RFL) and Estriol (EST). The current proposed method was well adopted for the analysis of real sample.

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“…The electrochemical redox reaction of CC is shown in Eq. (1) . The current densities and ΔEp values on the rGO paper electrode and the Fe−CuMOF/rGO composite paper electrode for CC were determined as 0.2 and 1.5 mA cm −2 and as 300 and 80 mV, respectively.…”

Section: Resultsmentioning

confidence: 99%

Graphene Paper with Sharp‐edged Nanorods of Fe−CuMOF as an Excellent Electrode for the Simultaneous Detection of Catechol and Resorcinol

Kıranşan

Topç̧u

2019

Electroanalysis

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A flexible composite paper Fe−Cu‐based metal‐organic framework (MOF)/reduced graphene oxide (rGO) (Fe−CuMOF/rGO) electrode was prepared by using a simple electrochemical method for the simultaneous detection of catechol (CC) and resorcinol (RC). Free‐standing, flexible and double‐sided Fe−CuMOF/rGO composite paper was obtained by applying the electrochemical deposition process on the rGO paper electrode in the solution containing Fe−CuMOF composite. The morphological analysis of Fe−CuMOF/rGO composite paper showed that sea urchin‐like structures formed on the rGO electrode surface consist of numerous sharp‐edged nanorods of Fe−CuMOF. Flexible Fe−CuMOF/rGO paper electrode exhibited high sensitivity, wide linear range and low detection limit for the simultaneous determination of CC and RC. The linear ranges of concentration for CC and RC were 0.1–800 and 0.1–720 μM, respectively, and the corresponding limits of detection (S/N=3) were 0.016 and 0.020 μM. The outstanding performance of this flexible electrode could be attributed to the sharp‐edged urchin‐like Fe−CuMOF structures which provide an increment of the surface area and the electrochemical activity of the composite paper electrode. Stability tests showed that Fe−CuMOF/rGO composite paper electrode has excellent flexibility, high durability, and good reproducibility. Furthermore, this electrode exhibited high sensitivity and selectivity for the determination of CC and RC in real sample analysis.

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Determination of Riboflavin at Carbon Nanotube Paste Electrodes Modified with an Anionic Surfactant

Cited by 62 publications

References 38 publications

Mechanistic Insights into the Voltammetric Determination of Riboflavin at Poly (Serine) Modified Graphite and Carbon Nanotube Composite Paste Electrode

Mechanistic Insights into the Voltammetric Determination of Riboflavin at Poly (Serine) Modified Graphite and Carbon Nanotube Composite Paste Electrode

The Electrochemical Resolution of Ciprofloxacin, Riboflavin and Estriol Using Anionic Surfactant and Polymer‐Modified Carbon Paste Electrode

Graphene Paper with Sharp‐edged Nanorods of Fe−CuMOF as an Excellent Electrode for the Simultaneous Detection of Catechol and Resorcinol

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