Fabrication of a sensitive and selective electrochemical sensing platform based on poly-l-leucine modified sensor for enhanced voltammetric determination of Riboflavin

Monnappa, Amrutha Balliamada; Manjunatha, Jamballi G.; Bhatt, Aarti S.; Ananda, Pushpanjali. Pemmatte

doi:10.1007/s11694-020-00608-9

Cited by 20 publications

(3 citation statements)

References 51 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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“…It is well known that EIS is one of the most used methods for studying the surface properties of modified electrodes. [36][37][38] Measurements were done in 5.0 mmol l −1 [Fe(CN) 6 ] 3−/4− containing 0.1 mol l −1 KCl at room temperature. The charge transport process of the Bare/PGE, AuNP/PGE, f-MWCNT/PGE, and f-MWCNT/AuNP/PGE were studied by observing charge transfer resistance (Rct) values at the electrode-electrolyte interface.…”

Section: Resultsmentioning

confidence: 99%

Selective Electrochemical Sensing of Riboflavin Based on Functionalized Multi-Walled Carbon Nanotube/Gold Nanoparticle/Pencil Graphite Electrode

Dokur

Gördük

Şahin

2020

ECS J. Solid State Sci. Technol.

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In this study; an easy, practical, and selective sensor has been developed for the electrochemical determination of riboflavin. To prepare the modified electrode, the gold nanoparticle was deposited on the pencil graphite electrode (AuNP/PGE) by the method of chronoamperometry at −3.0 V for 30 s in 0.5 M H2SO4 solution containing 10 mM tetrachloroaurate. Functionalized multi-walled carbon nanotube (f-MWCNT) solution was dropped on prepared AuNP/PGE and the functionalized multi-walled carbon nanotube/gold nanoparticle/pencil graphite electrode (f-MWCNT/AuNP/PGE) was prepared for measurements. Characterization studies of the prepared sensor were performed using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), energy-dispersive X-ray spectroscopy (EDX), and X-ray photoelectron spectroscopy (XPS) methods. The surface morphology of the prepared sensor was investigated by field emission scanning electron microscopy (FESEM). Differential pulse voltammetry (DPV) was used to carry out electrochemical measurements in phosphate buffer solution pH 4.0. Limit of detection (LOD) and limit of quantitation (LOQ) values were found to be 0.0352 and 0.118 μmol l−1, respectively. The fabricated sensor showed excellent anti-interference ability against ascorbic acid (AA) and glucose (G). The applicability of the constructed sensor to real samples was investigated and good recovery values were achieved. As a result, it has been seen that the modified electrode is applicable in applications of riboflavin determination.

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“…Carbon-based electrodes are currently in widespread use in electroanalytical chemistry for many different applications. This is due to their large potential window, low cost, rich surface chemistry, low background current, chemical inertness, and congruity [29][30][31][32][33][34][35]. Carbon is a distinctive and necessary element in our world.…”

Section: A D V a N C E D O N L I N E A R T I C L Ementioning

confidence: 99%

An overview of recent developments of carbon-based sensors for the analysis of drug molecules

Pushpanjali

Manjunatha

Hareesha

2021

J. Electrochem. Sci. Eng.

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This review summarizes some recent developments in the fabrication of modified sensors and biosensors using carbon-based materials. The great potential of carbon-based electrodes as sensing platforms is exciting due to their unique electrical and chemical properties, high accessibility and high biocompatibility. Carbon-based materials are particularly interesting due to almost infinite possibility of their functionalization with a wide variety of organic molecules, biologically important compounds and pharmaceuticals. This review is specifically focused on recent developments in the utilization of various carbon-based electrodes in sensing devices for the electrochemical investigation of drug molecules. Various voltammetric techniques considered in this effort include linear sweep voltammetry (LSV), cyclic voltammetry (CV), differential pulse voltammetry (DPV), square wave voltammetry (SWV), and square wave adsorptive stripping voltammetry (SWAdSV). The carbon-based electrode materials considered in this review comprise carbon paste, carbon nanotubes, graphite, graphene, and glassy carbon. The analytes chosen are some routinely used drugs such as paracetamol (PC), diclofenac sodium (DCF), 5-fluorouracil (5-FU), cetirizine (CTZ) and salbutamol (SAL). All here reported sensing electrodes produced very good results in electrochemical investigations of these drug molecules.

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Fabrication of a sensitive and selective electrochemical sensing platform based on poly-l-leucine modified sensor for enhanced voltammetric determination of Riboflavin

Cited by 20 publications

References 51 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

Selective Electrochemical Sensing of Riboflavin Based on Functionalized Multi-Walled Carbon Nanotube/Gold Nanoparticle/Pencil Graphite Electrode

An overview of recent developments of carbon-based sensors for the analysis of drug molecules

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