کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
151154 456464 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sonocatalytic performance of Er3+:YAlO3/TiO2–Fe2O3 in organic dye degradation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Sonocatalytic performance of Er3+:YAlO3/TiO2–Fe2O3 in organic dye degradation
چکیده انگلیسی

In this study, the Er3+:YAlO3 as up-conversion luminescence agent, which can transfer the visible light part in the sonoluminescence to ultraviolet light, was synthesized by nitrate–citrate acid and sol–gel method. And then the Er3+:YAlO3/TiO2–Fe2O3 composite as a sonocatalyst was prepared by ultrasonic dispersion and liquids boil method. The prepared Er3+:YAlO3/TiO2–Fe2O3 composite was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The sonocatalytic activity of Er3+:YAlO3/TiO2–Fe2O3 composite was examined through the degradation of organic dye in aqueous solution under ultrasonic irradiation. The influences of key preparation conditions such as Ti/Fe molar ratio, heat-treated temperature and heat-treated time on the sonocatalytic activity of Er3+:YAlO3/TiO2–Fe2O3 composites were studied. The results indicated that the Er3+:YAlO3/TiO2–Fe2O3 composite with 1:1 molar ratio of Ti/Fe heat-treated at 500 °C for 20 min displays the highest sonocatalytic performance in the degradation of Acid Red B. For the degradation of other organic dyes, the Er3+:YAlO3/TiO2–Fe2O3 composite also demonstrates a good sonocatalytic activity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 168, Issue 3, 15 April 2011, Pages 1041–1048
نویسندگان
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