Interdigitated Gear-Shaped Screen-Printed Electrode Using G-PANI Ink for Sensitive Electrochemical Detection of Dopamine DOI Creative Commons
Pritu Parna Sarkar,

Ridma Tabassum,

Ahmed Hasnain Jalal

et al.

Journal of Sensor and Actuator Networks, Journal Year: 2024, Volume and Issue: 13(6), P. 84 - 84

Published: Dec. 6, 2024

In this research, a novel interdigitated gear-shaped, graphene-based electrochemical biosensor was developed for the detection of dopamine (DA). The sensor’s innovative design improves active surface area by 94.52% and 57% compared to commercially available Metrohm DropSens 110 screen-printed sensors printed circular sensors, respectively. electrode fabricated using laser processing modified with graphene polyaniline conductive ink (G-PANI) enhance its properties. Fourier Transform Infrared (FTIR) Spectroscopy X-ray diffraction (XRD) were employed characterize physiochemical properties sensor. Dopamine, neurotransmitter crucial several body functions, detected within linear range 0.1–100 µM, Limit Detection (LOD) 0.043 µM (coefficient determination, R2 = 0.98) in phosphate-buffer saline (PBS) ferri/ferrocyanide as redox probe. performance sensor evaluated cyclic voltammetry (CV) Chronoamperometry, demonstrating high sensitivity selectivity. gear-shaped exhibited excellent repeatability, relative standard deviation (RSD) 1.2% (n 4) reproducibility, an RSD 2.3% 4). addition detecting human serum, effectively distinguished ternary mixture containing uric acid (UA) ascorbic (AA). Overall, offers reliable, disposable, cost-effective solution detection, potential applications medical diagnostics neurological research.

Language: Английский

A facial synthesis of zinc metavanadate nanocomposite for enhanced photocatalytic degradation and sensor applications DOI

R. Naik,

T. Bala Narsaiah,

P. Justin

et al.

Research on Chemical Intermediates, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Language: Английский

Citations

1
Sustainable MXene Synthesis via Molten Salt Method and Nano-Silicon Coating for Enhanced Lithium-Ion Battery Performance DOI Creative Commons
Hansu Kim,

Yunki Jung,

Wonhwa Lee

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(4), P. 812 - 812

Published: Feb. 10, 2025

MXenes, a family of 2D transition metal carbides, nitrides, and carbonitrides, have attracted significant attention due to their exceptional physicochemical properties electrochemical performance, making them highly promising for diverse applications, particularly in energy storage. Despite notable advancements, MXene synthesis remains critical challenge, as conventional methods often rely on hazardous hydrofluoric acid-based processes, posing substantial environmental safety risks. In this study, we present an eco-friendly approach MXenes using molten salt which offer safer, sustainable alternative while enabling scalable production. Additionally, explore the development high-performance battery anodes by fabricating nanocomposites nano-silicon MXene, followed bio-inspired polydopamine coating carbonization process. This innovative strategy not only enhances structural stability performance but also aligns with environmentally conscious design principles. Our findings demonstrate potential nanocomposite materials advancing storage technologies.

Language: Английский

Citations

1
Ultra-high sensitivity electrochemical aptamer biosensor based on a carbon nano-confined interface for the detection of aflatoxin B1 in traditional chinese materia medica decoction pieces DOI

B. Liu,

Long‐Yue Meng, Li Han

et al.

Carbon letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Language: Английский

Citations

1
Construction of Cu2O/PANI-GO/SS flexible electrode with three-dimensional network structure towards electrochemical sensing of glucose and ascorbic acid DOI
Haoran Li, Yue Sun,

Ting Xian

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 178919 - 178919

Published: Jan. 1, 2025

Language: Английский

Citations

0
Aspects of Electrochemical Biosensors Using Affinity Assays DOI Creative Commons

Thor Pedersen,

Leonid Gurevich, Nils E. Magnusson

et al.

Biosensors, Journal Year: 2025, Volume and Issue: 15(3), P. 166 - 166

Published: March 4, 2025

In recent decades, the utilization of biomarkers has gained increasing attention. The timely identification and quantification proteins, nucleic acids, small molecules associated with a medical condition, infection, or contaminant have become increasingly crucial across variety fields, including medicine, food safety, quality/environmental control. State-of-the-art biomarker detection methods predominantly rely on standard immunoassay techniques, requiring specialized laboratory equipment trained personnel. This impedes broad commercial implementation biosensors in, e.g., Point-of-Care (PoC) settings where ease operation, portability, cost-efficiency are prioritized. Small, robust electrochemical promising alternative for analyzing in complex samples within PoC environments. Therefore, creating designing optimized sensing surfaces, immobilization strategies, efficient signal generation improving biosensor systems, which turn can real-world impact. present paper, we reviewed common electrode types geometries used approaches, discussed advantages drawbacks different methods, presented labeling strategies enhancement.

Language: Английский

Citations

0
Modifying the Morphology, Doping, and Electroanalytical Performance of Carbon Nanofibers by Varying the Ratio of Etchant and Feedstock Gases DOI Open Access
Ishan Pande, Khadijeh Nekoueian, Jani Sainio

et al.

Analysis & Sensing, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Abstract Ammonia (NH 3 ) is a widely used etchant gas in the plasma‐enhanced chemical vapor deposition (PECVD) synthesis of carbon nanofibers (CNFs). In addition to being an effective etchant, NH also serves as dopant by providing N heteroatoms. However, this secondary role has not been comprehensively investigated. Moreover, influence N‐doping on electroanalytical performance CNFs thoroughly assessed. work, we have prepared two varieties altering ratio and feedstock gases C 2 H , respectively), resulting N‐doped with different doping levels. Differences were observed morphology electrochemical characteristics CNFs. While inner sphere redox (ISR) significantly affected, significant shift between peak potentials ascorbic acid (AA) dopamine (DA) was detected higher doped CNFs, enhanced selectivity towards DA. Our results demonstrate simple yet method for enhancing properties

Language: Английский

Citations

0
A Portable Microelectrochemical Sensor Based on Potentiostatic Polarization-Treated and Laser-Induced Graphene for the Simultaneous Determination of Ascorbic Acid, Dopamine, and Uric Acid DOI
Xiaoming Yuan, Xiu-Wen Wu,

Shilin Li

et al.

Langmuir, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 20, 2024

Maintaining normal biomolecular levels in the human body plays a crucial role controlling various diseases. In this work, we designed portable microelectrochemical sensor based on laser-induced graphene (LIG) for simultaneous determination of ascorbic acid (AA), dopamine (DA), and uric (UA). A simple electrode surface modification strategy, potentiostatic polarization an alkali solution, was applied to functionalize LIG with aim enhancing electrocatalytic activity, conductivity, wettability. After electrochemical pretreatment, modified displayed significantly enhanced activity toward AA, DA, UA, well-separated characteristic oxidation peaks each analyte, thus achieving their detection without further by nanomaterials. Differential pulse voltammetry (DPV) determining these three analytes. Under optimal conditions, calibration curves were obtained ranges 10–5000 μM, 0.1–6000 10–8000 nM limits (S/N = 3) 1.43 6.83 nM, 1.07 respectively. The achieved reliable satisfactory results detecting UA actual urine samples, demonstrating significant application prospects health monitoring clinical diagnosis.

Language: Английский

Citations

0
Interdigitated Gear-Shaped Screen-Printed Electrode Using G-PANI Ink for Sensitive Electrochemical Detection of Dopamine DOI Creative Commons
Pritu Parna Sarkar,

Ridma Tabassum,

Ahmed Hasnain Jalal

et al.

Journal of Sensor and Actuator Networks, Journal Year: 2024, Volume and Issue: 13(6), P. 84 - 84

Published: Dec. 6, 2024

In this research, a novel interdigitated gear-shaped, graphene-based electrochemical biosensor was developed for the detection of dopamine (DA). The sensor’s innovative design improves active surface area by 94.52% and 57% compared to commercially available Metrohm DropSens 110 screen-printed sensors printed circular sensors, respectively. electrode fabricated using laser processing modified with graphene polyaniline conductive ink (G-PANI) enhance its properties. Fourier Transform Infrared (FTIR) Spectroscopy X-ray diffraction (XRD) were employed characterize physiochemical properties sensor. Dopamine, neurotransmitter crucial several body functions, detected within linear range 0.1–100 µM, Limit Detection (LOD) 0.043 µM (coefficient determination, R2 = 0.98) in phosphate-buffer saline (PBS) ferri/ferrocyanide as redox probe. performance sensor evaluated cyclic voltammetry (CV) Chronoamperometry, demonstrating high sensitivity selectivity. gear-shaped exhibited excellent repeatability, relative standard deviation (RSD) 1.2% (n 4) reproducibility, an RSD 2.3% 4). addition detecting human serum, effectively distinguished ternary mixture containing uric acid (UA) ascorbic (AA). Overall, offers reliable, disposable, cost-effective solution detection, potential applications medical diagnostics neurological research.

Language: Английский

Citations

0