University of Kashan Journal of Nanostructures 2251-7871 3 3 2013 09 01 Synthesis of TiO2 Nanoparticle and its Application to Graphite Composite Electrode for Hydroxylamine Oxidation 269 275 5466 10.7508/jns.2013.03.001 EN M. Mazloum-Ardakani Department of Chemistry, Faculty of Science, Yazd University, Yazd, 89195-741, I.R. Iran A. R. Khoshroo Department of Chemistry, Faculty of Science, Yazd University, Yazd, 89195-741, I.R. Iran Journal Article 2014 05 18 In this work, sol-gel method was used tosynthesize titanium dioxide nanoparticles (TiO₂). The TiO₂nanoparticles was characterized by Scanning Electron Microscopy (SEM), x-ray diffraction (XRD) and BET technique.The TiO₂ and coumarin derivative (7-(1,3-dithiolan-2-yl)-9, 10-dihydroxy-6H-benzofuro [3,2-c] chromen-6-on) were incorporated in a graphite composite electrode. The resulting modified electrode displayed a good electrocatalytic activity for the oxidation of hydroxylamine, which leads to a reduction in its overpotential by more than 520 mV. Differential pulse voltammetry (DPV) of hydroxylamine at the modified electrode exhibited a linear dynamic range (between 0.5 and 500.0 µM) with a detection limit (3σ) of 0.133 μM. The high sensitivity, ease of fabrication and low cost of this modified electrode for the detection of hydroxylamine demonstrate its potential sensing applications. https://jns.kashanu.ac.ir/article_5466_d44c0de4b37d9ff31719c1b8c8e78736.pdf