1403/01/10

رضا اوجانی

مرتبه علمی: استاد
ارکید:
تحصیلات: دکترای تخصصی
اسکاپوس:
دانشکده: دانشکده شیمی
نشانی:
تلفن: 011 35302350

مشخصات پژوهش

عنوان
Ti/TiO2 nanotube array electrode as a new sensor to photoelectrocatalytic determination of ethylene glycol
نوع پژوهش
JournalPaper
کلیدواژه‌ها
Photo-assisted electrocatalysis; Ti/TiO2 nanotube array electrode; hydrodynamic amperometry; ethylene glycol
سال
2016
مجله BULLETIN OF MATERIALS SCIENCE
شناسه DOI
پژوهشگران Reza Ojani ، Akbar Khanmohammadi ، Jahan Bakhsh Raoof

چکیده

The photoelectrocatalytic oxidation behaviour of ethylene glycol (EG) was studied in the present work using the TiO2-modified Ti foil (Ti/TiO2) electrode. The Ti/TiO2 nanotube array (Ti-NTA) electrode was prepared by anodizing of the Ti foil in the HF aqueous solution (0.2% v/v). The anodization was conducted in the constant 30 Vfor 2 h, and then the as-prepared Ti-NTA electrode was calcinated at 50◦C for 2 h. The surface morphology of Ti- NTA electrode was studied using scanning electron microscopy images. For EG determination, the photocurrent of EG (EG oxidation current in the UV irradiation) was assessed using the hydrodynamic photoamperometric method in the phosphate buffers. Ultimately, the optimum conditions of EG determination were studied in various pH values andapplied bias potentials, and the pH=3.0 and E =1.0 V (vs. reference electrode) were determined as the optimum conditions. It was found that the photocurrent of EG was linearly dependent on the concentration of EG in the range of 3.0 × 10−5 to 0.88 mol l−1, and the detection limit of EG determination was found to be 7.2 × 10−6 mol l−1 (3σ).