Poly (Biphenol / biphenoquinone - vanadium (IV)) modified electrode as selective sensor for detection of 4-nitrophenol

2021 ◽  
pp. 106945
Author(s):  
Sabereh Narouie ◽  
Gholam Hossein Rounaghi ◽  
Hamideh. Saravani ◽  
Mehdi Shahbakhsh
Keyword(s):  
Modified Electrode ◽  
Selective Sensor

scholarly journals Modification of Gold Surface with Gold Nanoparticles and Cyclohexyl Dithiocarbamate as a Selective Sensor for Cysteine

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Ehab AlShamaileh ◽  
Haytham Saadeh ◽  
Valerie Favry
Keyword(s):  
Gold Nanoparticles ◽  
Cyclic Voltammetry ◽  
Modified Electrode ◽  
Self Assembly ◽  
Gold Surface ◽  
The Self ◽  
Self Assembled Monolayer ◽  
Chemically Modified ◽  
Modified Surface ◽  
Selective Sensor

The self-assembly of cyclohexylamine dithiocarbamate (C6DTC) on gold (Au) and gold nanoparticles (AuNPs) was studied electrochemically using cyclic voltammetry (CV). Cyclic voltammetry was used to study the systemFe(CN)63-/Fe(CN)64-at the electrode surface of (C6DTC/Au) and (C6DTC/AuNPs). The application of the resulting chemically modified surface as a selective sensor for cysteine, among other amino acids, was investigated. Linear oxidative desorption technique was used to characterize the modified electrode that consists of the self-assembled monolayer of cyclohexylamine dithiocarbamate on gold nanoparticles deposited on Au electrode (C6DTC/AuNPs/Au). The results showed an enhancement in the oxidation peak of cysteine on the modified electrode and hence a greater sensitivity.

Highly sensitive NADH detection by utilising an aluminium hydroxide/iron hydroxide/MWCNTs nanocomposite film-modified electrode

2020 ◽  
Vol 15 (14) ◽  
pp. 997-1002
Author(s):  
Yu Wang ◽  
Lingling Yin ◽  
Xia Li ◽  
Ran Shang ◽  
Xiangli Yang ◽  
...  
Keyword(s):  
Modified Electrode ◽  
Aluminium Hydroxide ◽  
Nanocomposite Film ◽  
Iron Hydroxide ◽  
Highly Sensitive

Application of Alizarin/Graphene-Chitosan Modified Electrode on Detection of Human Telomere DNA

2013 ◽  
Vol 41 (4) ◽  
pp. 481
Author(s):  
Yuan-Yuan JIANG ◽  
Kun WANG ◽  
Chong-Zheng XU ◽  
Xiao-Di YANG ◽  
Hui-Hui LI
Keyword(s):  
Modified Electrode ◽  
Human Telomere

Differential Pulse Voltammetric Determination of Piroxicam on Lanthanide Ferric Oxide Nanoparticles-Carbon Paste Modified Electrode

2018 ◽  
Vol 14 (3) ◽  
pp. 271-276 ◽  
Author(s):  
Isaac Yves Lopes de Macedo ◽  
Morgana Fernandes Alecrim ◽  
Luane Ferreira Garcia ◽  
Aparecido Ribeiro de Souza ◽  
Wallans Torres Pio dos Santos ◽  
...  
Keyword(s):  
Modified Electrode ◽  
Ferric Oxide ◽  
Differential Pulse ◽  
Voltammetric Determination ◽  
Oxide Nanoparticles ◽  
Carbon Paste ◽  
Carbon Paste Modified Electrode

scholarly journals Paper-Based Competitive Immunochromatography Coupled with an Enzyme-Modified Electrode to Enable the Wireless Monitoring and Electrochemical Sensing of Cotinine in Urine

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1659
Author(s):  
Nutcha Larpant ◽  
Pramod K. Kalambate ◽  
Tautgirdas Ruzgas ◽  
Wanida Laiwattanapaisal
Keyword(s):  
Glucose Oxidase ◽  
Modified Electrode ◽  
Near Field ◽  
Electrochemical Measurement ◽  
Electrochemical Sensing ◽  
Urine Samples ◽  
Lateral Flow Strip ◽  
Wireless Monitoring ◽  
Sensing Platform ◽  
Combined Strategy

This paper proposes a combined strategy of using paper-based competitive immunochromatography and a near field communication (NFC) tag for wireless cotinine determination. The glucose oxidase labeled cotinine antibody specifically binds free cotinine in a sample, whereas the unoccupied antibody attached to BSA-cotinine at the test line on a lateral flow strip. The glucose oxidase on the strip and an assistant pad in the presence of glucose generated H2O2 and imposed the Ag oxidation on the modified electrode. This enabled monitoring of immunoreaction by either electrochemical measurement or wireless detection. Wireless sensing was realized for cotinine in the range of 100–1000 ng/mL (R2 = 0.96) in PBS medium. Undiluted urine samples from non-smokers exhibited an Ag-oxidation rate three times higher than the smoker’s urine samples. For 1:8 diluted urine samples (smokers), the proposed paper-based competitive immunochromatography coupled with an enzyme-modified electrode differentiated positive and negative samples and exhibited cotinine discrimination at levels higher than 12 ng/mL. This novel sensing platform can potentially be combined with a smartphone as a reader unit.

scholarly journals Nanostructured TiO2 and PEDOT Electrodes with Photovoltaic Application

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 107
Author(s):  
Andrés Mauricio Ramírez ◽  
Linda Cattin ◽  
Jean-Christian Bernède ◽  
Fernando Raúl Díaz ◽  
Manuel Alejandro Gacitúa ◽  
...  
Keyword(s):  
Modified Electrode ◽  
Photovoltaic Cells ◽  
Morphological Characterization ◽  
Transparent Electrodes ◽  
Nanostructured Tio2 ◽  
Photovoltaic Application

In this work, nanostructured TiO2 and poly-3,4-ethylenedioxythiophene (PEDOT) layers were electrochemically prepared over transparent electrodes. Morphological characterization evidenced the presence of nanostructures as planed with 50-nm-wide TiO2 rod formations followed by 30-nm-wide PEDOT wires. Different characterizations were made to the deposits, establishing their composition and optic properties of the deposits. Finally, photovoltaic cells were prepared using this modified electrode, proving that the presence of PEDOT nanowires in the cell achieves almost double the efficiency of its bulk analogue.

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