Results 1 to 10 of about 72,415 (120)

Selective electrochemical determination of dopamine using Thioglycolic acid modified gold electrode

Scientific African, 2023
This study was aimed to investigate the selective electrochemical determination for dopamine based on thioglyolic acid-modified gold electrode. Negatively charged Au electrode surface was created by making Thioglycolic acid film through thiol functional ...
Yideneku Feye, Abebe Diro, Getu Sisay, Shimeles Addisu Kitte   +3 more
doaj   +1 more source

Electrochemical sensing of biotin-avidin interaction on gold electrode modified by silver nanoparticles through covalent co-assembling

Sensors International, 2022
Electrochemical sensing of biotin-avidin interaction was investigated on gold electrode modified with 3-mercaptopropanoic acid (MPA) successively co-assembled with cysteamine functionalized silver nanoparticles and biotin or avidin.
Nirgaman Bage, Pradip Kar
doaj   +1 more source

Development of polypyrrole/nano-gold composite for non-enzymatic glucose sensors

Micro and Nano Engineering, 2022
In this study, a non-enzymatic glucose composed of gold nanoparticle decorated polypyrrole (PPy) is reported. The PPy is prepared by electro-polymerization in 0.05 M phosphate-buffered saline (PBS) containing 0.1 M pyrrole monomer. The gold nanoparticles
Hiroki Kawakami, Yuki Ito, Yu-An Chien, Chun-Yi Chen, Wan-Ting Chiu, Parthojit Chakraborty, Takamichi Nakamoto, Masato Sone, Tso-Fu Mark Chang   +8 more
doaj   +1 more source

Analysis of the Effect of Electrode Materials on the Sensitivity of Quartz Crystal Microbalance

Nanomaterials, 2022
This paper investigated the effect of electrode materials on the performance of quartz crystal microbalance (QCM) sensors by means of theoretical calculation, experiment, and finite element analysis methods. First, we calculated the particle displacement
Qiao Chen, Xianhe Huang, Yao Yao, Kunlei Mao   +3 more
doaj   +1 more source

Preparation of Gold Nanoplates Using Ortho Carbonyl Compounds as Capping Agents for Electrochemical Sensing of Lead Ions

Nanoscale Research Letters, 2021
In this study, gold nanoplates were synthesized using plant molecules (gallic acid) following a kinetic control mode. The growth of nanoplates is mainly due to the specific adsorption of capping agents on certain crystal facets.
Xinde Jiang, Jianye Ma, Guixian Jiang, Manqing Xu, Xueping Huang, Guiqing Gao, Xin Dai   +6 more
doaj   +1 more source

Nanostructured gold thin film electrode derived from surfactant-free gold nanoparticles for enhanced electrocatalysis

Electrochemistry Communications, 2023
Electrodes composed of nanostructured surfaces have been shown to be promising electrocatalysts, offering enhanced catalytic activity. Gold nanoparticles (AuNPs) are often used to produce such a nanostructured surface.
Yasuhiro Mie, Hirotaka Okabe, Chitose Mikami, Taisei Motomura, Naoki Matsuda   +4 more
doaj   +1 more source

Optically Transparent Gold Nanoparticles for DSSC Counter-Electrode: An Electrochemical Characterization

Molecules, 2022
A gold nanoparticles transparent electrode was realized by chemical reduction. This work aims to compare the transparent gold nanoparticles electrode with a more commonly utilized gold-film-coated electrode in order to investigate its potential use as ...
Jessica Barichello, Donatella Spadaro, Sara Gullace, Alessandro Sinopoli, Pietro Calandra, Alessia Irrera, Fabio Matteocci, Giuseppe Calogero, Stefano Caramori, Carlo Alberto Bignozzi   +9 more
doaj   +1 more source

Highly sensitive electrochemical detection of biotin-avidin interaction on gold electrode modified with silver nanoparticles through bilayer assembly

Results in Chemistry, 2022
The trifunctional l-cysteine containing carboxylic acid, amine and thiol is chemisorbed on the gold electrode surface via the thiol groups to form the self-assembled monolayer.
Nirgaman Bage, Sadhana Kundu, Arpita Adhikari, Pradip Kar   +3 more
doaj   +1 more source

Gold Nanoparticles/Carbon Nanotubes and Gold Nanoporous as Novel Electrochemical Platforms for L-Ascorbic Acid Detection: Comparative Performance and Application

Chemosensors, 2021
Herein, the effects of nanostructured modifications of a gold electrode surface in the development of electrochemical sensors for L-ascorbic acid detection have been investigated.
Cristina Tortolini, Federico Tasca, Mary Anna Venneri, Cinzia Marchese, Riccarda Antiochia   +4 more
doaj   +1 more source

Glassy carbon electrode modified with ex-in-situ gold film – A simple and effective working electrode for As(III) determination by using differential pulse anodic stripping voltammetry

Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên, 2021
An easy-to-make new working electrode, an ex-in-situ AuF/GCE, was developed for trace As(III) detection. A gold film electrode prepared ex-situ was re-plated in-situ during each arsenic deposition step by adding Au(III) into the analyte solution.
Hoang Thai Long, Thi Kim Dung Le
doaj   +1 more source