TY - JOUR
T1 - Effect of Synthesis Parameters on the Structure and Magnetic Properties of Magnetic Manganese Ferrite/Silver Composite Nanoparticles Synthesized by Wet Chemistry Method
AU - Huy, L.T.
AU - Tam, L.T.
AU - Phan, V.N.
AU - Trung, T.
AU - Tung, L.M.
AU - Thanh, D.T.N.
AU - Hoa, N.Q.
AU - Vinh, L.K.
AU - Ngo, D.T.
AU - Mølhave, Kristian
AU - Le, A.-T.
PY - 2016
Y1 - 2016
N2 - In the present work, magnetic manganese ferrite/silver (MnFe2O4-Ag) composite nanoparticles were synthesized by wet chemistry method. This synthesis process consists of two steps: first, the seed of manganese ferrite nanoparticles (MnFe2O4 NPs) was prepared by a coprecipitationmethod; second, growth of silver nanoparticles (AgNPs) on the MnFe2O4 seed by modified photochemical reaction. We have conducted systematically the effects of synthesis parameters such as pH value, synthesis time, precursor salts concentration, mass ratio and stabilizing agents on the structure and magnetic properties of nanocomposites. In an optimized condition of synthesis parameters, the high quality MnFe2O4 NPs are obtained at pH value = 13, Mn2+ cation concentration= 0.4 M and synthesis time about 105 min; and the use of PVP stabilizing agent is found to optimize the formation of Ag-NPs on the surface of MnFe2O4 NPs. The as-prepared MnFe2O4-Ag magnetic nanocomposites display excellent properties of high crystallinity, long-term aggregation stability in aqueous medium, large saturation magnetization in the range of 15-20 emu/g, and small sizes of Ag-NPs similar to 20 nm. These exhibited properties made the MnFe2O4-Ag nanocomposites attractive candidate for various technological applications in biomedicine, catalyst and environmental monitoring.
AB - In the present work, magnetic manganese ferrite/silver (MnFe2O4-Ag) composite nanoparticles were synthesized by wet chemistry method. This synthesis process consists of two steps: first, the seed of manganese ferrite nanoparticles (MnFe2O4 NPs) was prepared by a coprecipitationmethod; second, growth of silver nanoparticles (AgNPs) on the MnFe2O4 seed by modified photochemical reaction. We have conducted systematically the effects of synthesis parameters such as pH value, synthesis time, precursor salts concentration, mass ratio and stabilizing agents on the structure and magnetic properties of nanocomposites. In an optimized condition of synthesis parameters, the high quality MnFe2O4 NPs are obtained at pH value = 13, Mn2+ cation concentration= 0.4 M and synthesis time about 105 min; and the use of PVP stabilizing agent is found to optimize the formation of Ag-NPs on the surface of MnFe2O4 NPs. The as-prepared MnFe2O4-Ag magnetic nanocomposites display excellent properties of high crystallinity, long-term aggregation stability in aqueous medium, large saturation magnetization in the range of 15-20 emu/g, and small sizes of Ag-NPs similar to 20 nm. These exhibited properties made the MnFe2O4-Ag nanocomposites attractive candidate for various technological applications in biomedicine, catalyst and environmental monitoring.
KW - MnFe2O4-Ag
KW - Magnetic Nanocomposites
KW - Ferromagnetic
KW - Coprecipitation
KW - Photochemical
U2 - 10.1166/jnn.2016.12751
DO - 10.1166/jnn.2016.12751
M3 - Journal article
VL - 16
SP - 7919
EP - 7928
JO - Journal of Nanoscience and Nanotechnology
JF - Journal of Nanoscience and Nanotechnology
SN - 1533-4880
IS - 8
ER -