期刊
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
卷 392, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotochem.2020.112434
关键词
Silica fume; MCM-41; Pomegranate leaves; Co3O4; Photocatalyst; Omethoate pesticide
资金
- Beni-Suef University
- King Saud University, Riydah, Saudi Arabia [RSP-2019/133]
Advanced nanocomposite from silica-fume based MCM-41 and cobalt oxide (Co3O4 /SF-MCM-41) which precipitated by green techniques in the presences of Pomegranate leaves extract as reducing reagent. The formation of the Co3O4 /SF-MCM-41 composite was confirmed by different studied analytic techniques and applied as novel photocatalyst in the visible light oxidation of Omethoate pesticide. The composite is of stunning surface area (742 m(2)/g) and low band gap energy value (1.53 eV) which giving it promising photocatalytic performances. It showed highly effective photocatalytic activity which reflected in a complete degradation of 50 mg/L, 100 mg/L, 150 mg/L, 200 mg/L and 250 mg/L of Omethoate after 30 min, 50 min, 80 min, 100 min, and 120 min, respectively using 0.25 g of Co3O4/SF-MCM-41. This associated with complete degradation of the detected TOC content within the same time intervals. The detected intermediate organic materials of (CH3O)(3)P(O), (CH3O)(2)P (O)SCH3, CH3NHC(O)CH2SH, CH3NHC(O)CH2SCH3, and NH2C(O)CH2SCH3 were identified as oxidizing products during the degradation steps and all of them were converted into NO3-, SO42-, PO43-, and CO2 as final products. The composite is of reusability value and the hydroxyl radicals were identified as the controlling radicals during the oxidation process.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据