Nanostructured Ba/ZnO modified electrode as a sensor material for detection of organosulfur thiosalicylic acid

Aim and Objective: Ultrafine Ag/ZnO nanotetrapods (AZNTP) have been prepared successfully using silver (I)–bis (oxalato) zinc complex and 1, 3-diaminopropane (DAP) with a phase separation system, and have been injected into a diethyl/water solution. Materials and Methods: This crystal structure and lattice constant of the AZNTP obtained were investigated by means of a SEM, XRD, TEM and UV-vis spectrum. Results: The results of the present study demonstrated the growth and characterization AZNTP for humidity sensing and DAP plays a key role in the determination of particle morphology. AZNTP films with 23 nm in arm diameter have shown highly sensitive, quick response sensor material that works at room temperature.

Download Full-text

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

Current Pharmaceutical Analysis ◽

10.2174/1573412913666170410131223 ◽

2018 ◽

Vol 14 (3) ◽

pp. 271-276 ◽

Cited By ~ 5

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

Download Full-text

Synthesis, characterization and cytotoxic activity of binuclear copper(II)-complexes with some S-isoalkyl derivatives of thiosalicylic acid. Crystal structure of the binuclear copper(II)-complex with S-isopropyl derivative of thiosalicylic acid

Journal of Inorganic Biochemistry ◽

10.1016/j.jinorgbio.2020.111078 ◽

2020 ◽

Vol 208 ◽

pp. 111078

Author(s):

Jelena Dimitrijević ◽

Aleksandar N. Arsenijević ◽

Marija Z. Milovanović ◽

Nebojša N. Arsenijević ◽

Jelena Z. Milovanović ◽

...

Keyword(s):

Crystal Structure ◽

Cytotoxic Activity ◽

Binuclear Copper ◽

Acid Crystal ◽

Thiosalicylic Acid ◽

Derivatives Of

Download Full-text

Molybdenum trioxide embedded graphitic carbon nitride sheets modified electrode for caffeine sensing in green tea and coffee powder

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2021.124735 ◽

2021 ◽

pp. 124735

Author(s):

Gopal Boopathy ◽

Murugan Keerthi ◽

Shen-Ming Chen ◽

S. Meenakshi ◽

M.J. Umapathy

Keyword(s):

Green Tea ◽

Modified Electrode ◽

Carbon Nitride ◽

Molybdenum Trioxide ◽

Graphitic Carbon ◽

Graphitic Carbon Nitride ◽

Coffee Powder

Download Full-text

Wireless Sensor material Fusion based Single photon indium phosphide on silicon chip for frequency-modulated continuous-wave light detection and ranging

Journal of Physics Conference Series ◽

10.1088/1742-6596/1804/1/012184 ◽

2021 ◽

Vol 1804 (1) ◽

pp. 012184

Author(s):

R Selvakumar ◽

Ngangbam Phalguni Singh ◽

Shruti Suman

Keyword(s):

Indium Phosphide ◽

Continuous Wave ◽

Single Photon ◽

Light Detection And Ranging ◽

Wireless Sensor ◽

Light Detection ◽

Sensor Material ◽

Continuous Wave Light

Download Full-text

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

Sensors ◽

10.3390/s21051659 ◽

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.

Download Full-text