Open AccessSynthesis of Fe3O4/PAM Superparamagnetic Nanoparticles by Using Electrostatic Interaction
Author(s) -
Qi Huang,
Shuzhi Wang
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/738/1/012029
Subject(s) - superparamagnetism , nanoparticle , materials science , ion , saturation (graph theory) , analytical chemistry (journal) , chemical engineering , nanotechnology , chemistry , magnetization , magnetic field , chromatography , organic chemistry , physics , mathematics , quantum mechanics , combinatorics , engineering
In the study, two kinds of emulsions were prepared, respectively containing nano water droplets (NWDs) with positive and negative charges on the surface. The positive charges nano water droplets, called Fe-NWDs contained Fe 2+ and Fe 3+ ions and negative charges nano water droplets, called OH-NWDs, contained OH - ions. After the above two kinds of emulsions were mixed, Fe 3 O 4 /PAM superparamagnetic nanoparticles (SMNPs) were synthesized in the integrated NWDs by means of electric interaction, co-precipitation and polymerization reaction. The shapes of Fe 3 O 4 /AM SMNPs were spherical or ellipsoid ranged in diameter from 80nm to 360nm tested by TEM and the Fe 3 O 4 /AM SMNPs had superparamagnetic character tested by VSM. The magnetic saturation value of Fe 3 O 4 /PAM SMNPs was 27.38emu/g. The XRD graph indicated Fe 3 O 4 was contained in the SMNPs. The infrared spectrum proved that Fe 3 O 4 was coated by PAM exactly.