Facile one-step preparation of triethanolamine modified magnetic nanoparticles for the high-efficient removal of Cu (II) ions and methylene blue

Author(s):  
Qi Ying ◽  
Yongmei Hao ◽  
Zhongming Wang ◽  
Xiangjun Li
2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Ying Li ◽  
Ning Tang ◽  
Fuyuhiko Inagaki ◽  
Chisato Mukai ◽  
Kazuichi Hayakawa

1,3-Dialkylimidazolium-based ionic liquids were chemically synthesized and bonded on the surface of magnetic nanoparticles (MNPs) with easy one-step reaction. The obtained six kinds of ionic liquid modified MNPs were characterized with transmission electron microscopy, thermogravimetric analysis, magnetization, and FTIR, which owned the high adsorption capacity due to the nanometer size and high-density modification with ionic liquids. Functionality of MNPs with ionic liquids greatly influenced the solubility of the MNPs with organic solvents depending on the alkyl chain length and the anions of the ionic liquids. Moreover, the obtained MNPs showed the specific extraction efficiency to organic pollutant, polycyclic aromatic hydrocarbons, while superparamagnetic property of the MNPs facilitated the convenient separation of MNPs from the bulks water samples.


Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1307 ◽  
Author(s):  
Ting-Ting Li ◽  
Xixi Cen ◽  
Hai-Tao Ren ◽  
Fei Sun ◽  
Qi Lin ◽  
...  

A bark-like imitated polypr opylene (PP)/polycarbonate (PC) nanofibrous membrane was constructed by one-step meltblown technique for efficient particulate matter (PM) removal. The effects of PC content (0%, 1%, 3%, 5%, and 7%) on membrane thermal stability, microscopic characteristics, filtration performance, hydrophilicity, and water vapor transmission were investigated. The results demonstrated that using facile design of incompatibility and viscosity difference between PC and PP polymers decreases average fiber diameter, creating a bark-like groove appearance and increasing surface potential, making a new PP/PC membrane with high filtration performance. The resultant PP/PC membrane had finer average fiber diameter of 0.63 μm, which was nearly 89.41% lower than PP membranes (5.95 μm), and its quality factor (0.036 Pa−1) was nearly 2.12 times than that of PP membranes (0.017 Pa−1) with the die hole diameter of 0.5 mm. This fabrication technique of a special meltblown filter membrane saves the cost of die retrofitting and post-processing, which provides an innovative method for particulate efficient removal of high efficient filters.


RSC Advances ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 3324-3332
Author(s):  
Jia Xu ◽  
Dan Chen ◽  
Yuan Yang ◽  
Hongjian Gong ◽  
Wenqi Gao ◽  
...  

Schematic procedure of DNA isolation using mAMNPs.


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