Fast adsorption of methylene blue on polyacrylic acid-bound iron oxide magnetic nanoparticles

A solvent thermal method which depends on a thermal process under critical temperature and pressure was used to prepare cobalt iron oxide magnetic nanoparticles with a molar ratio 2. The prepared particles were in the form of nanoparticles with diameter ranging from 5 to 10 nm and with amorphous structure. Magnetic hysteresis behavior with saturation magnetization 36.31 emu/g and coercivity 4 Oe were observed for the nanoparticles. Polyvinyl alcohol was loaded with different concentrations of cobalt iron oxide nanoparticles using casting technique. Hysteresis loops for the polymer films were observed and both the saturation magnetization and coercivity were increased from 0.36 to 16.03 emu/g and 115 to 293 Oe for samples containing 5 and 20 wt% of nanoparticles, respectively. The elastic modulus of films was increased from 2.7 to 4.9 GPa for unloaded and loaded samples with 20 wt%, respectively. The storage modulus of the polymer films was found to obey the percolation behavior.

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Click Synthesis of Hydrophilic Maltose-Functionalized Iron Oxide Magnetic Nanoparticles Based on Dopamine Anchors for Highly Selective Enrichment of Glycopeptides

ACS Applied Materials & Interfaces ◽

10.1021/acsami.5b06991 ◽

2015 ◽

Vol 7 (44) ◽

pp. 24670-24678 ◽

Cited By ~ 70

Author(s):

Changfen Bi ◽

Yingran Zhao ◽

Lijin Shen ◽

Kai Zhang ◽

Xiwen He ◽

...

Keyword(s):

Iron Oxide ◽

Magnetic Nanoparticles ◽

Selective Enrichment ◽

Iron Oxide Magnetic Nanoparticles ◽

Click Synthesis

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Application of Immobilized Fungi Phanerochaete chrysosporium in Removal of Heavy-Metals from Wastewater

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.779-780.1674 ◽

2013 ◽

Vol 779-780 ◽

pp. 1674-1677 ◽

Cited By ~ 2

Author(s):

Dan Lian Huang ◽

Guang Ming Zeng ◽

Piao Xu ◽

Cui Lai ◽

Mei Hua Zhao ◽

...

Keyword(s):

Heavy Metals ◽

Iron Oxide ◽

Magnetic Nanoparticles ◽

Phanerochaete Chrysosporium ◽

High Efficiency ◽

Metal Removal ◽

Heavy Metal Removal ◽

Removal Of Heavy Metals ◽

Iron Oxide Magnetic Nanoparticles ◽

Ca Alginate

Immobilized microbe technologies are expected to be effectively used in wastewater treatment. Removal of heavy-metals from wastewater by immobilized Phanerochaete chrysosporium (Pc) with Ca-alginate and iron oxide magnetic nanoparticles (MNPs) was studied. The results showed that a biosorbent as Pc immobilized by Ca-alginate and iron oxide magnetic nanoparticles was successfully developed. And the iron oxide magnetic nanoparticles played an important role in the increase of biosorption capacity of Pc. Energy dispersive spectrometer (EDS) analysis confirmed that metal ions adsorbed to the surface of the biosorbents were partly transmitted to the interior of biosorbents, mainly embedded with iron oxide nanoparticles and Ca-alginate. Moreover, it was found that MNPs-Ca-alginate immobilized Pc showed a good affinity to various heavy metals, such as Pb(II), Zn(II), Cd(II) or Mg(II) and so on. The results proved the high efficiency of the biosorbents for heavy-metal removal and its potential application in the treatment of metal-containing wastewater.

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