TY - JOUR
T1 - Monodispersed Co, Ni-ferrite nanoparticles with tunable sizes
T2 - Controlled synthesis, magnetic properties, and surface modification
AU - Jia, Xiao
AU - Chen, Dairong
AU - Jiao, Xiuling
AU - He, Tao
AU - Wang, Hanyu
AU - Jiang, Wei
PY - 2008/1/31
Y1 - 2008/1/31
N2 - Ferrite (CoxNiyFe3-x-yO4, x = 0.6, 0.3, 0.2, 0, y = 0, 0.6, 0.7, 0.8) nanoparticles monodispersed in nonpolar solvents have been prepared with different Co, Ni, and Fe compositions by heating mixtures of inorganic salts and sodium dodecylbenzenesulfonate (SDBS) in n-octanol. The as-prepared nanoparticles were characterized in detail by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM (HR-TEM), selective area electron diffraction (SAED), infrared (IR), thermal-gravimetric (TG) analysis, and other techniques. The nanoparticle sizes could be tuned by adjusting the reaction time. The formation mechanism of the nanoparticles during the solvothermal process is proposed based on the experimental results. The effects of size and composition of the nanoparticles on magnetic properties were investigated, and the magnetic properties of nanoparticles with the same size but different compositions were compared. Furthermore, water-dispersible nanoparticles were obtained by simply washing the as-prepared nanoparticles with acetic acid.
AB - Ferrite (CoxNiyFe3-x-yO4, x = 0.6, 0.3, 0.2, 0, y = 0, 0.6, 0.7, 0.8) nanoparticles monodispersed in nonpolar solvents have been prepared with different Co, Ni, and Fe compositions by heating mixtures of inorganic salts and sodium dodecylbenzenesulfonate (SDBS) in n-octanol. The as-prepared nanoparticles were characterized in detail by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM (HR-TEM), selective area electron diffraction (SAED), infrared (IR), thermal-gravimetric (TG) analysis, and other techniques. The nanoparticle sizes could be tuned by adjusting the reaction time. The formation mechanism of the nanoparticles during the solvothermal process is proposed based on the experimental results. The effects of size and composition of the nanoparticles on magnetic properties were investigated, and the magnetic properties of nanoparticles with the same size but different compositions were compared. Furthermore, water-dispersible nanoparticles were obtained by simply washing the as-prepared nanoparticles with acetic acid.
UR - http://www.scopus.com/inward/record.url?scp=39349091395&partnerID=8YFLogxK
U2 - 10.1021/jp077019+
DO - 10.1021/jp077019+
M3 - Article
AN - SCOPUS:39349091395
SN - 1932-7447
VL - 112
SP - 911
EP - 917
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 4
ER -