TY - JOUR
T1 - Functionally modified monodisperse core-shell silica nanoparticles
T2 - Silane coupling agent as capping and size tuning agent
AU - Lin, Jinbin
AU - Chen, Hongling
AU - Ji, Yan
AU - Zhang, Yu
PY - 2012/10/5
Y1 - 2012/10/5
N2 - Vinyltriethoxysilane (VTEOS) has been used as capping and size tuning agent to prepare monodisperse core-shell silica hybrid spheres. When VTEOS was used, the relative standard deviation below 3% for silica hybrid spheres can be produced by changing the concentration of VTEOS and the ammonia catalyst. The obtained hybrid particles were characterized and confirmed by various technologies including Fourier transform infrared (FT-IR) spectroscopy, FT-Raman spectroscopy, 29Si CP (cross-polarization) MAS NMR, thermal analysis, particle size distribution, field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). FT-IR, FT-Raman, 29Si CP MAS NMR spectra and thermal analysis confirm the existence of vinyl groups on hybrid particles. Particle size distribution, FE-SEM and TEM reveal the uniformity in size/shape and the core-shell structure of hybrid particles. The influence of experiment parameters on the resulting particles, the capping and size tuning actions of other silane coupling agents (SCAs) were investigated herein as well.
AB - Vinyltriethoxysilane (VTEOS) has been used as capping and size tuning agent to prepare monodisperse core-shell silica hybrid spheres. When VTEOS was used, the relative standard deviation below 3% for silica hybrid spheres can be produced by changing the concentration of VTEOS and the ammonia catalyst. The obtained hybrid particles were characterized and confirmed by various technologies including Fourier transform infrared (FT-IR) spectroscopy, FT-Raman spectroscopy, 29Si CP (cross-polarization) MAS NMR, thermal analysis, particle size distribution, field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). FT-IR, FT-Raman, 29Si CP MAS NMR spectra and thermal analysis confirm the existence of vinyl groups on hybrid particles. Particle size distribution, FE-SEM and TEM reveal the uniformity in size/shape and the core-shell structure of hybrid particles. The influence of experiment parameters on the resulting particles, the capping and size tuning actions of other silane coupling agents (SCAs) were investigated herein as well.
KW - Core-shell
KW - Hybrid particles
KW - Monodisperse silica
KW - Size tuning agent
UR - http://www.scopus.com/inward/record.url?scp=84865067826&partnerID=8YFLogxK
U2 - 10.1016/j.colsurfa.2012.06.047
DO - 10.1016/j.colsurfa.2012.06.047
M3 - 文章
AN - SCOPUS:84865067826
SN - 0927-7757
VL - 411
SP - 111
EP - 121
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
ER -