کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
27779 44042 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Recovery of visible-light photocatalytic efficiency of N-doped TiO2 nanoparticulate films
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Recovery of visible-light photocatalytic efficiency of N-doped TiO2 nanoparticulate films
چکیده انگلیسی

Bare TiO2 and N-doped TiO2 nanoparticulate films in anatase phase were prepared on glass substrates by laser ablation of titanium target in O2, N2/O2 and NH3/N2/O2 atmospheres, respectively. The nitrogen dopant concentration increased notably when a small amount of NH3 was added into the N2/O2 mixture. The film prepared in NH3/N2/O2 exhibited enhanced photoabsorption and photocatalytic ability in the visible-light region as compared with that produced in N2/O2. However, for all films, rapid deactivations were observed with operating time, leading to a poor reusability of the catalysts. With a simple and effective approach of mild heat treatment, the photocatalytic efficiency was completely recovered and the reusability of the film was greatly improved.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 193, Issues 2–3, 25 January 2008, Pages 222–227
نویسندگان
, , , ,