Linear Sweep and Cyclic Voltammetry

Speiser, Bernd

doi:10.1002/9783527610426.bard030201

Cited by 7 publications

(6 citation statements)

References 79 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The calibration demonstrates that current density values of anodic and cathodic peaks have a linear correlation with the square roots of the scan rate (ν 1/2 ) variation, with correlation coefficient values (R 2 ) of 0.9996 and 0.9871, respectively. This correlation infers the diffusion-controlled mechanism of the electrochemical reaction on the surface of MWCNT/AgNP-SPCE [54].…”

Section: Optimization Of Various Parameters In the Fabrication Of Mwc...supporting

confidence: 60%

Durable nonenzymatic electrochemical sensing using silver decorated multi-walled carbon nanotubes for uric acid detection

Anshori,

Ula,

Asih

et al. 2023

Nanotechnology

View full text Add to dashboard Cite

In this study, we demonstrate a facile, durable and inexpensive technique of producing silver nanoparticles-decorated multi-walled carbon nanotubes (MWCNT/AgNP) on the easy-to-use screen-printed carbon electrodes (SPCE) for non-enzymatic detection of uric acid (UA) in an electrochemical sensor. The developed sensors show great durability for three months in storage, and high specificity performance for preclinical study using spiked UA in a synthetic urine sample. A simple route for this hybrid nanocomposite was proposed through an oxidation–reduction with reflux (ORR) process. A significant increase in the electroactive surface area of SPCE was achieved by modifying it with MWCNT/AgNP. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive x-ray spectroscopy (EDX), Fourier-transform infrared (FT-IR) spectroscopy, Raman spectroscopy, and x-ray diffraction (XRD) analysis confirmed this synthesis. The nanocomposite nanostructure electrodes achieved an outstanding UA detection with sensitivity of 0.1021 μA μM−1 and a wide dynamic range of 10–1000 μM. In phosphate-buffered saline (PBS), the measurements achieved a detection limit of 84.04 nM while in pure synthetic urine; it was 6.074 μM. The constructed sensor exhibits excellent stability and durability for several months, and great specificity against interfering compounds, including dopamine (DA), urea, and glucose. Overall, the present outcomes denote the potential of MWCNT/AgNP-decorated SPCE for early uric acid diagnostics tools in health monitoring.

show abstract

Section: Optimization Of Various Parameters In the Fabrication Of Mwc...supporting

confidence: 60%

Durable nonenzymatic electrochemical sensing using silver decorated multi-walled carbon nanotubes for uric acid detection

Anshori,

Ula,

Asih

et al. 2023

Nanotechnology

View full text Add to dashboard Cite

show abstract

“…Figure 9B points out the linear relation between the square root of the potential scan rate and the peak current with the linear equation, as seen in Equations ( 1) and ( 2) for anodic and cathodic peaks, respectively. The linearity indicates that the diffusion-controlled reaction dominates dopamine's electrochemical detection [43].…”

Section: Effect Of the Potential Scan Rate Variationmentioning

confidence: 98%

Gold Nanospikes Formation on Screen-Printed Carbon Electrode through Electrodeposition Method for Non-Enzymatic Electrochemical Sensor

Anshori

Althof

Rizalputri

et al. 2022

Metals

View full text Add to dashboard Cite

In this study, we reported the construction of Gold Nanospike (AuNS) structures on the surface of screen-printed carbon electrode (SPCE) used for non-enzymatic electrochemical detection. This modification was prepared with a one-step electrodeposition method by controlling the electrodeposition parameters, such as applied potential and deposition time, via Constant Potential Amperometry (CPA). Those parameters and precursor solution concentration were varied to investigate the optimum electrodeposition configuration. The results confirmed that AuNS were homogenously deposited and well-dispersed on the working electrode surface of SPCE. The AuNS-modified SPCE was implemented as a non-enzymatic sensor toward dopamine and could enhance the electrocatalytic ability compared with the bare SPCE. Further examination shows that the sensing performance of the AuNS-modified SPCE produced an increase in electrochemical surface area (ECSA) at 17.25 times higher than the bare electrode, a sensitivity of 0.056 µA mM−1 cm−2 with a wide linear range of 0.2–50 µM and a detection limit of 0.33 µM. In addition, AuNS-modified SPCE can selectively detect dopamine among other interfering analytes such as ascorbic acid, urea, and uric acid, which commonly coexist in the body fluid. This work demonstrated that AuNS-modified SPCE is a prospective sensing platform for non-enzymatic dopamine detection.

show abstract

“…Using electrophoretic technique, the film was coupled onto the surface of ITO coated glass plate. The linear sweep voltammetry was used to carry out response studies [49]. In 2010, Dhand et al fabricated a working bioelectrode represented as Lipase-GDH/PANI-SWCNT-TB/ITO, which could detect tributyrin in the concentration range of 50-400 mg/dL À1 in a short response time of 12 s. The electrode displayed high sensitivity of 4.28 Â 10 À4 mA mg/dL and storage stability of 91 days [50].…”

Section: Tg Biosensors Based On Conducting Polymermentioning

confidence: 99%

Recent trends and perspectives in enzyme based biosensor development for the screening of triglycerides: a comprehensive review

Hooda

Gahlaut

Gothwal

2018

Artificial Cells, Nanomedicine, and Biotechnology

View full text Add to dashboard Cite

Clinical manifestations of the elevated plasma triacylglycerol (TG) include a greater prevalence of atherosclerotic heart disease, acute pancreatitis, diabetes mellitus, hypertension, and ischemic vascular disease. Hence, these significant health troubles have attracted scientific attention for the precise detection of TG in biological samples. Numerous techniques have been employed to quantify TG over many decades, but biosensors hold the leading position owing to their superior traits such as highly specific recognition for target molecules, accuracy, minituarization, small sample requirement and rapid response. Enzyme-based electrochemical biosensors represent an instantaneous resolution for the foremost bottlenecks constraining laboratory prototypes to reach real time bedside applications. We highlight the choice of transducers and constructive strategies to design high-performance biosensor for the quantification of triglycerides in sera and early diagnosis of health problems related to it. In the present review, a small effort has been made to emphasize the significant role of enzymes, nanostructured metal oxides, graphene, conducting polypyrrole, nanoparticles, porous silicon, EISCAP and ENFET in enabling TG biosensors more proficient and taking a revolutionary step forward.

show abstract

Linear Sweep and Cyclic Voltammetry

Abstract: The sections in this article are Introduction Historical Background Potential Scan Voltammetries—Definitions Scope of the Chapter Theory of Potential Scan Voltammetries General Reversible Electron Transfer Kinetics of Electron Tran… Show more

Cited by 7 publications

References 79 publications

Durable nonenzymatic electrochemical sensing using silver decorated multi-walled carbon nanotubes for uric acid detection

Durable nonenzymatic electrochemical sensing using silver decorated multi-walled carbon nanotubes for uric acid detection

Gold Nanospikes Formation on Screen-Printed Carbon Electrode through Electrodeposition Method for Non-Enzymatic Electrochemical Sensor

Recent trends and perspectives in enzyme based biosensor development for the screening of triglycerides: a comprehensive review

Contact Info

Product

Resources

About