کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
191142 459715 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and characterisation of visible light responsive iodine doped TiO2 electrodes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Preparation and characterisation of visible light responsive iodine doped TiO2 electrodes
چکیده انگلیسی

Characteristics are presented of new iodine doped TiO2 (I-TiO2) prepared via the hydrothermal method, where titania (IV) complexes with a ligand containing an iodine atom have been used as a precursor. The structure of samples has been examined by XPS, XRD, UV–vis and FT-IR-ATR techniques. These studies confirm that the obtained powder exhibits a decrease in the bandgap energy value (Eg = 2.8 eV). The report presents electrochemical studies of I-TiO2 films on a Pt electrode, which allow determination of the flatband potential Efb = −0.437 V vs. SCE (in 0.5 M Na2SO4). Cyclic voltammetry measurements show anodic and cathodic activities under Vis and UV–vis radiation. The photocurrent enhancement due to visible light radiation reached 30% of the whole photoacitivity exhibited under UV–vis illumination.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 55, Issue 20, 1 August 2010, Pages 5881–5885
نویسندگان
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