scholarly journals Magnetite nanoparticles grafted with murexide-terminated polyamidoamine dendrimers for removal of lead (II) from aqueous solution: synthesis, characterization, adsorption and antimicrobial activity studies

Heliyon ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. e06600
Author(s):  
Selma Ekinci ◽  
Zülfiye İlter ◽  
Selami Ercan ◽  
Ercan Çınar ◽  
Reşit Çakmak
Keyword(s):  
Aqueous Solution ◽  
Antimicrobial Activity ◽  
Magnetite Nanoparticles ◽  
Solution Synthesis ◽  
Polyamidoamine Dendrimers

scholarly journals Aggregation Behavior and Antimicrobial Activity of Ester-Functionalized Imidazolium- and Pyridinium-Based Ionic Liquids in Aqueous Solution

Langmuir ◽  
2013 ◽  
Vol 29 (8) ◽  
pp. 2536-2545 ◽  
Author(s):  
M. Teresa Garcia ◽  
Isabel Ribosa ◽  
Lourdes Perez ◽  
Angeles Manresa ◽  
Francesc Comelles
Keyword(s):  
Aqueous Solution ◽  
Antimicrobial Activity ◽  
Ionic Liquids ◽  
Aggregation Behavior

scholarly journals High Encapsulation Efficiency of Magnetite Nanoparticles in Hydrophobic Polymer Microcapsules using Microsuspension Conventional Radical Polymerization

2019 ◽  
Vol 35 (2) ◽  
pp. 516-522 ◽  
Author(s):  
Jittaya Sadchaiyaphum ◽  
Pongsathon Phapugrangkul ◽  
Preeyporn Chaiyasat ◽  
Amorn Chaiyasat
Keyword(s):  
Aqueous Solution ◽  
Oleic Acid ◽  
Radical Polymerization ◽  
Magnetite Nanoparticles ◽  
Driving Force ◽  
Encapsulation Efficiency ◽  
Polymer Particle ◽  
Polymer Shell ◽  
Hydrophobic Polymer ◽  
Co Precipitation

High encapsulation efficiency of magnetite nanoparticles (MNPs; Fe3O4) in microcapsules using PDVB as a hydrophobic polymer shell was successfully achieved by microsuspension conventional radical polymerization (ms CRP). MNPs were initially synthesized by co-precipitation of Fe2+/Fe3+ in a binary phase. During the nucleation of MNPs in alkaline aqueous solution existing oleic acid (OA), MNPs were coated with OA (MNPs-OA) before moving to the toluene phase with the addition of salt. At OA concentration of 0.3 wt%, most of the nucleated MNPs were hydrophobic and well dispersed in the toluene phase. Using DVB as a monomer for ms CRP, high encapsulation efficiency (92 %EE) of MNPs-OA was obtained, with low free polymer particle formation. By contrast, large amounts of free polymer particles were observed at low %EE (32%) of MNPs. The main driving force for high %EE was obtained by coating the surface of the MNPs by OA which increased hydrophobicity.

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