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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Nanocomposites VI: Nanoscience and Nanotechnology in Advanced Composites
Presentation Title Chronoamperometric Approach for Detection of H2O2 Adulteration in Milk using Ag/TiO2 Nanoparticles
Author(s) Bharti Sharma
On-Site Speaker (Planned) Bharti Sharma
Abstract Scope Chronoamperometric sensor based on Ag doped TiO2 nanoparticles was developed for detection of hydrogen peroxide (H2O2) in Milk. The nanoparticles were synthesized using chemical method with diameters of 15 nm. For determination of adulteration of H2O2 in milk, an electrochemical sensor was prepared by electrodepositing Ag doped TiO2 nanoparticles and immobilized using gold linker on gold electrode surface.The morphological behaviour of the modified electrode surface was analyzed by scanning electron microscopy (SEM). The modified electrode (Ag/TiO2) shows significant oxidation effect of hydrogen peroxide with starting potential around +0.05V (vs. AgCl/Ag) which significantly decreases hydrogen peroxide oxidation over potential. The electrocatalytic response current of the sensor was proportional to the H2O2 concentration in the range of 5.0×10-6 to 1.6×10-3 mol L-1 with a detection limit down to 0.21 µmol L-1.The H2O2 sensor exhibits a low detection limit with good signal reproducibility and the accurate measurements in milk as the real sample.
Proceedings Inclusion? Planned:

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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Chronoamperometric Approach for Detection of H2O2 Adulteration in Milk using Ag/TiO2 Nanoparticles
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