کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7703642 | 1496863 | 2018 | 46 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cerium-substituted magnetite: Fabrication, characterization and sonocatalytic activity assessment
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The present paper reports the sonocatalytic activity of cerium-substituted-magnetite for removal of oxytetracycline (OTC). The catalyst was prepared through a chemical route (co-precipitation, Fe3-xCexO4) and a mechanical procedure (CeO2/Fe3O4). Subsequently, the physico-chemical characteristics of both samples were determined using XRD, BET, SEM, EDX, TEM, Dot-mapping, FT-IR, DRS, and VSM analysis and compared to pristine magnetite and ceria. Afterwards, the effects of various operational conditions were assessed on sonocatalytic performance of Fe2.8Ce0.2O4 for OTC removal and the obtained optimal conditions were applied to compare the resulted DE with so-synthesized Fe3O4, CeO2, and CeO2/Fe3O4 samples. Fe2.8Ce0.2O4 (0.75â¯g/L) exhibited great catalytic performance for sono-degradation of OTC under its unchanged pH and US power of 300â¯W, wherein about 88% and 64% of OTC was removed at its initial concentrations of 20 and 50â¯mg/L. Moreover, the effects of the addition of a number of oxidants, organic and inorganic compounds and gases on the sonocatalytic degradation of OTC were evaluated under the identical condition. The obtained results presented an effective sonocatalytic system based on the synergistic action of Fe2.8Ce0.2O4 under ultrasonic irradiation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 41, March 2018, Pages 626-640
Journal: Ultrasonics Sonochemistry - Volume 41, March 2018, Pages 626-640
نویسندگان
Alireza Khataee, Ramin Hassandoost, Shima Rahim Pouran,