کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1653058 1007654 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation, characterization and photocatalytic performance of Nd3+-doped titania nanoparticles with mesostructure
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Preparation, characterization and photocatalytic performance of Nd3+-doped titania nanoparticles with mesostructure
چکیده انگلیسی

Nd3+-doped titania nanoparticles with mesostructures were synthesized via hydrothermal process by using cetyltrimethylammonium bromide (CTAB) as directing and pore-forming agent. The obtained materials were characterized by XRD, nitrogen adsorption–desorption, TEM and DRS. The existence of neodymium ion affect significantly the phase transition of the amorphous to anatase, and the band-gap energy was reduced because of the defect energy level induced by the 4f atomic orbital of Nd3+ with the optimal content of 1.5 at.% Nd. Density functional theory calculations can explain the band-gap narrowing. The maximum photocatalytic activity corresponds to the 0.5 at.% Nd3+-doped anatase nanopowders with mesostructures, which is higher than that of undoped samples.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 61, Issue 1, January 2007, Pages 105–110
نویسندگان
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