کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5357097 1388213 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparative study of potassium hexatitanate (K2Ti6O13) whiskers prepared by sol-gel and solid state reaction routes
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Comparative study of potassium hexatitanate (K2Ti6O13) whiskers prepared by sol-gel and solid state reaction routes
چکیده انگلیسی

Polycrystalline phases of the potassium hexatitanate (K2Ti6O13) were synthesized by conventional solid state reaction and sol-gel methods with a view to compare structural, electrical, optical and photocatalytic properties. Single phase K2Ti6O13 prepared by sol-gel method (PSG) revealed higher value of dielectric constant than same obtained by the solid state reaction method (PSS), attributed to smaller particle size in sol-gel method. Band gap (3.48 eV) of K2Ti6O13 prepared by sol-gel method was found higher than (3.06 eV), obtained in solid state reaction method. Additionally, K2Ti6O13 was tested as photocatalyst on the degradation of methyl orange (MO) under UV light and found better activity for sample PSG. Morphological characteristic exhibited formation of nanorods in sol-gel route and formation of microrods in solid state reaction method.

► K2Ti6O13 whiskers are prepared through sol-gel (PSG) and by solid state reaction route (PSS). ► K2Ti6O13 (PSG) exposing nanorods while K2Ti6O13 (PSS) reveals microrods. ► Dielectric constant and loss tangent are found to be high for PSG as compare to PSS. ► The energy band gap is found to be higher for the sample prepared by sol-gel method. ► Photocatalytic activity is found, better for the sample prepared by sol-gel method.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 258, Issue 19, 15 July 2012, Pages 7354-7358
نویسندگان
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