LI Ming~1 WANG Bing~1 LIU Hui~2 KANG Yanjie~3 KUI Rexi~4 FENG Weiyue~1 1. Preparation,characterization and SRXPS study of polyvinyl alcohol modified Fe3O4 nanoparticles[J]. Nuclear techniques, 2011, 34(5): 331-335.
LI Ming~1 WANG Bing~1 LIU Hui~2 KANG Yanjie~3 KUI Rexi~4 FENG Weiyue~1 1. Preparation,characterization and SRXPS study of polyvinyl alcohol modified Fe3O4 nanoparticles[J]. Nuclear techniques, 2011, 34(5): 331-335.DOI:
nanoparticles were coated with PVA to synthesize PVA-Fe
3
O
4
complex
which were characterized by transmission electron microscopy(TEM)
thermo gravimetric(TG) analysis
UV-vis spectra
zeta potentials and ICP-MS
in terms of the physicochemical properties
while surface constituents
structures and chemical bonds of the modified and unmodified nanoparticles were characterized with synchrotron radiation X-ray photoelectron spectroscopy(SRXPS)
for exploring modification mechanism of the PVA-Fe
3
O
4
.The results indicate that after PVA modification
the suspension stability of Fe
3
O
4
nanoparticles in water and cellular uptake capability were significantly improved compared with unmodified Fe
3
O
4
.The SRXPS analysis reveals that the hydroxy groups on the surface of Fe
3
O
4
nanoparticles and PVA were combined by hydrogen bond to consist a stable system
which would be beneficial to the biomedical applications of Fe