کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5359581 | 1503668 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural changes of anodic layer on titanium in sulfate solution as a function of anodization duration in constant current mode
ترجمه فارسی عنوان
تغییرات ساختاری لایه آنوداییک بر روی تیتانیوم در محلول سولفات به عنوان عملکرد طول آنودیزاسیون در حالت کنونی ثابت
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کلمات کلیدی
آنودایزگی، تیتانیوم، فوتوکاتالیست، پاسخ نور دیدنی،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
چکیده انگلیسی
The present study investigated the effect of anodization time, in constant current mode, on the anodic oxide layer formed on titanium (Ti). Anodization of the Ti substrate wasãcarried out in a 0.1Â M (NH4)2SO4 aqueous solution with reaction times of various durations, after which the characteristics and photocatalytic activity were investigated in detail. The TiO2 layer fabricated in a short duration exhibited comparatively flat surface morphology and an anatase-type crystal structure. This layer acted as a photocatalyst only under ultraviolet light (UV) illumination. Upon prolonging the anodization, the layer structure changed drastically. The surface morphology became rough, and the crystal structure changed to rutile-type TiO2. Furthermore, the layer showed photocatalytic activity both under UV and visible light illumination. Further anodization increased the amount of methylene blue (MB) adsorbed on the surface, but did not cause additional change to the structure of the anodic layer. The surface morphology and crystal structure of the anodic layer were predominantly controlled by the anodization time; thus, the anodization time is an important parameter for controlling the characteristics of the anodic layer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 296, 30 March 2014, Pages 163-168
Journal: Applied Surface Science - Volume 296, 30 March 2014, Pages 163-168
نویسندگان
Shinji Komiya, Kouta Sakamoto, Naofumi Ohtsu,