کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6584011 | 456361 | 2015 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High temperature synthesis of interfacial functionalized carboxylate mesoporous TiO2 for effective adsorption of cationic dyes
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This study reported a facile method to enhance the adsorption capacity of TiO2-based mesoporous material for the removal of methylene blue (MB) as a cationic dye from aqueous solution. The mesoporous surface of the modified TiO2 was successfully grafted with interfacial carboxylate groups by using the sol-gel method with ethylenediaminetetraacetic acid (EDTA) as a template at high temperature. Properties of the as-synthesized adsorbents were characterized by FTIR, XPS, FE-SEM, TGA and BET analysis. The MB uptake by adsorption was highly dependent on the electrostatic interaction between the adsorbent and the adsorbate. Basic media was favorable for greater MB deposition on the modified TiO2 surface, which related to uncoordinated carbonyl groups. The maximum capacity was reported as 32.15Â mg/L. The removal efficiency was maintained at 83% even after 9 adsorption-desorption cycles, which supported the reusability of the adsorbent for cationic dyes removal from aqueous solutions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 281, 1 December 2015, Pages 20-33
Journal: Chemical Engineering Journal - Volume 281, 1 December 2015, Pages 20-33
نویسندگان
Minh-Tri Nguyen-Le, Byeong-Kyu Lee,