中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 重庆绿色智能技术研究院
  3. 中国科学院重庆绿色智能技术研究院
  4. 水污染过程与治理研究中心
Fe3O4-MWCNT magnetic nanocomposites as efficient peroxidase mimic catalysts in a Fenton-like reaction for water purification without pH limitation

文献类型：期刊论文

作者Wang, Hui1; Jiang, Huan1; Wang, Sha2; Shi, Wenbing3; He, Jianchuan1; Liu, Hong2; Huang, Yuming1
刊名RSC ADVANCES
出版日期2014
卷号4期号:86页码:45809-45815
ISSN号2046-2069
DOI10.1039/c4ra07327d
通讯作者Huang, YM (reprint author), Southwest Univ, Coll Chem & Chem Engn, Key Lab Ecoenvironm Three Gorges Reservoir Reg, Minist Educ, Chongqing 400715, Peoples R China.
英文摘要The Fenton-based reaction is powerful enough to decompose refractory organic pollutants, but it is limited by having a low pH range and it is necessary to have a secondary disposal of the iron sludge. This study demonstrates that Fe3O4-multi-walled carbon nanotube (Fe3O4-MWCNT) magnetic hybrids can be used as an efficient peroxidase mimic catalyst that could overcome such pH limitations in a Fenton-like reaction and could be reused after a simple magnetic separation. The Fe3O4-MWCNT hybrid was prepared using a simple one-pot strategy via in situ growth of Fe3O4 magnetic nanoparticles onto the surface of the MWCNTs. In this process, MWCNTs act as an excellent dispersant, which ensures that the Fe3O4 is well dispersed. The Fe3O4-MWCNT hybrid was characterized by X-ray diffractometry, Fourier transform infrared spectrometer, thermogravimetric analysis and vibrating sample magnetometry, which indicated that the Fe3O4 nanoparticles were successfully deposited on to the surface of MWCNTs. Furthermore, it was revealed that the Fe3O4-MWCNTs could catalyze H2O2 decomposition by acting as a peroxidase mimic catalyst. Then heterogenous Fenton-like reactions were performed using the Fe3O4-MWCNT nanocomposites as a catalyst to degrade methylene blue (10.0 mg L-1; MB) in aqueous solution. The results showed that MB could be efficiently removed in a broad pH range of 1.0-10.0, with a degradation efficiency of 88.13% to 98.68% in two hours, and a highest total organic carbon removal efficiency of 35.6% in 12 hours. Furthermore, the magnetic nanocomposites exhibited an enhanced removal efficiency for MB compared with the Fe3O4 magnetic nanocomparticles and MWCNTs used individually. In addition, Fe3O4-MWCNT nanocomposites exhibited strong magnetism, and thereby could be easily separated from aqueous solution using an external magnetic field. Therefore, the as-prepared Fe3O4-MWCNT nanocomposites could be used as a promising and effective catalyst in Fenton-like reactions for the purification of MB polluted water in a wide pH range.
资助项目Natural Science Foundation of China[21075099] ; Natural Science Foundation of China[21275021] ; Natural Science Foundation of China[51378494]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000342761600026
出版者ROYAL SOC CHEMISTRY
源URL[http://119.78.100.138/handle/2HOD01W0/1099]  
专题水污染过程与治理研究中心
通讯作者Huang, Yuming
作者单位1.Southwest Univ, Coll Chem & Chem Engn, Key Lab Ecoenvironm Three Gorges Reservoir Reg, Minist Educ, Chongqing 400715, Peoples R China
2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
3.Yangtze Normal Univ, Coll Chem & Chem Engn, Chongqing Key Lab Inorgan Special Funct Mat, Chongqing 408100, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Hui,Jiang, Huan,Wang, Sha,et al. Fe3O4-MWCNT magnetic nanocomposites as efficient peroxidase mimic catalysts in a Fenton-like reaction for water purification without pH limitation[J]. RSC ADVANCES,2014,4(86):45809-45815.
APA Wang, Hui.,Jiang, Huan.,Wang, Sha.,Shi, Wenbing.,He, Jianchuan.,...&Huang, Yuming.(2014).Fe3O4-MWCNT magnetic nanocomposites as efficient peroxidase mimic catalysts in a Fenton-like reaction for water purification without pH limitation.RSC ADVANCES,4(86),45809-45815.
MLA Wang, Hui,et al."Fe3O4-MWCNT magnetic nanocomposites as efficient peroxidase mimic catalysts in a Fenton-like reaction for water purification without pH limitation".RSC ADVANCES 4.86(2014):45809-45815.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。