Highly stable and covalently functionalized magnetic nanoparticles by polyethyleneimine for Cr(vi) adsorption in aqueous solution

RSC Advances ◽  
2015 ◽  
Vol 5 (2) ◽  
pp. 1398-1405 ◽  
Author(s):  
Bo Chen ◽  
Xuesong Zhao ◽  
Yang Liu ◽  
Bugang Xu ◽  
Xuejun Pan

Covalently functionalized magnetic nanocomposite by polyethyleneimine (PEI) acted as superior adsorbent for removal of Cr(vi) form water.

2019 ◽  
Vol 571 ◽  
pp. 273-279 ◽  
Author(s):  
V.D. Chavan ◽  
V.P. Kothavale ◽  
S.C. Sahoo ◽  
P. Kollu ◽  
T.D. Dongale ◽  
...  

2017 ◽  
Vol 41 (22) ◽  
pp. 13399-13407 ◽  
Author(s):  
Lei Gu ◽  
Yun Wang ◽  
Juan Han ◽  
Lei Wang ◽  
Xu Tang ◽  
...  

We developed an efficient and mild method for the preparation of boronic acid-functionalized magnetic nanoparticles (MNPs), and the selective separation of fructose from a sample solution was demonstrated for the first time.


RSC Advances ◽  
2016 ◽  
Vol 6 (114) ◽  
pp. 113492-113502 ◽  
Author(s):  
Mohsen Mohammadi Galangash ◽  
Zahra Niyazi Kolkasaraei ◽  
Atefeh Ghavidast ◽  
Mehdi Shirzad-Siboni

The removal of AR-114 from aqueous solution by novel nano-adsorbent Fe3O4@SiO2–MPAP through hydrogen bonding interactions.


2017 ◽  
Vol 7 ◽  
pp. 130-138 ◽  
Author(s):  
Fatemeh Oveisi ◽  
Manouchehr Nikazar ◽  
Mohammad Hossein Razzaghi ◽  
Monir Al-Sadat Mirrahimi ◽  
Mohammad Taghi Jafarzadeh

2018 ◽  
Author(s):  
V. P. Kothavale ◽  
V. C. Karade ◽  
P. P. Waifalkar ◽  
Subasa C. Sahoo ◽  
P. S. Patil ◽  
...  

Author(s):  
Hee-Man Yang ◽  
Kune Woo Lee ◽  
Bum-Kyoung Seo ◽  
Jei Kwon Moon

Copper ferrocyanide functionalized magnetite nanoparticles (Cu-FC-MNPs) were successfully synthesized by the immobilization of copper and ferrocyanide on the surface of [1-(2 amino-ethyl)-3-aminopropyl] trimethoxysilane modified magnetite nanoparticles. A radioactive cesium (Cs) adsorption test was carried out to investigate the effectiveness of Cu-FC-MNPS for the removal of radioactive Cs. Furthermore, the Cu-FC-MNPs showed excellent separation ability by an external magnet in an aqueous solution.


2014 ◽  
Vol 28 (1) ◽  
pp. 14-21 ◽  
Author(s):  
Sudipa Ghosh ◽  
Quek Jee Teck ◽  
MS Uddin ◽  
K Hidajat

The present study investigates adsorption separation of beta-blocker (?-blocker), propranolol utilizing surface functionalized magnetic nanoparticles (MNPs) from phosphate buffer solution. Surface of MNP is functionalized with silica and carboxymethyl-?-cyclodextrin (CMCD) to scrutinize sorption removal characteristics. Modified MNPs are characterized by Fourier Transform Infrared (FTIR) Spectroscopy, Transmission Electron Microscopy (TEM) etc. Adsorption of propranolol onto magnetic nanoadsorbents is found to be dependent on solution pH and adsorption capacity of adsorbent increases as pH increases from 3 to 9 and then reaches plateau at pH 11. It appears that modified hydrophobicity of beta-blocker, propranolol affects interaction with cyclodextrin functionalized magnetic nanoparticles as well as adsorption capacity of the pollutant. Equilibrium data in aqueous solution is well represented by Freundlich isotherm model. XPS analysis reveals that propranolol adsorption on magnetic nanoparticles involves nitrogen atoms in side chain of propranolol to form surface complexes. Finally, desorption studies are carried out in different concentration of methanol solution and 50% methanol solution was found to be effective for almost complete desorption. DOI: http://dx.doi.org/10.3329/jce.v28i1.18104 Journal of Chemical Engineering, Vol. 28, No. 1, December 2013: 14-21


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