Formation Mechanism for Monodispersed Mesoporous Silica Spheres and Its Application to the Synthesis of Core/Shell Particles

2006 ◽  
Vol 111 (3) ◽  
pp. 1093-1100 ◽  
Author(s):  
Tadashi Nakamura ◽  
Mamoru Mizutani ◽  
Hiroshi Nozaki ◽  
Noritomo Suzuki ◽  
Kazuhisa Yano
Keyword(s):  
Mesoporous Silica ◽  
Formation Mechanism ◽  
Core Shell ◽  
Silica Spheres ◽  
Shell Particles ◽  
Mesoporous Silica Spheres

One-step synthesis of core-shell structured mesoporous silica spheres templated by protic ionic liquid and CTAB

2016 ◽  
Vol 178 ◽  
pp. 35-38 ◽  
Author(s):  
Shuo Zhao ◽  
Yiwei Zhang ◽  
Yuming Zhou ◽  
Xiaoli Sheng ◽  
Chao Zhang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Mesoporous Silica ◽  
Core Shell ◽  
Silica Spheres ◽  
Protic Ionic Liquid ◽  
One Step ◽  
Mesoporous Silica Spheres

scholarly journals Synthesis and Surface Properties of Silica Spheres with Core Shell Structure by One Convenient Method

2009 ◽  
Vol 2009 ◽  
pp. 1-5 ◽  
Author(s):  
D. P. Das ◽  
K. M. Parida ◽  
B. K. Mishra
Keyword(s):  
Mesoporous Silica ◽  
Shell Structure ◽  
Cost Effective ◽  
Molar Ratio ◽  
Ammonium Bromide ◽  
Core Shell ◽  
Silica Spheres ◽  
Core Shell Structure ◽  
Cetyltrimethyl Ammonium ◽  
Mesoporous Silica Spheres

Earlier, we have published a paper on the preparation of silica sphere using propanol as cosurfactant. We report here a highly cost-effective method of preparation of mesoporous silica spheres with core shell structure using sodium silicate as silica precursor, cetyltrimethyl ammonium bromide (CTAB) as surfactant, and methanol as cosurfactant. Thus after removal of the template by dissolutions or/and activation at higher temperature, mesoporous silica spheres with core shell structure were obtained. The products prepared with methanol to CTAB molar ratio 8.5 : 1 were confirmed to give best results. All the spherical products have very large surface area (∼589–1044 m2/g), pore volume (∼0.98–1.41 cm3/g), and ordered pore structure.

Synthesis of Highly Monodispersed Core/Shell Mesoporous Silica Spheres

2006 ◽  
Vol 45 ◽  
pp. 814-818
Author(s):  
Kazuhisa Yano ◽  
Tadashi Nakamura ◽  
Hiroshi Nozaki ◽  
Noritomo Suzuki ◽  
Yuusuke Akimoto
Keyword(s):  
Mesoporous Silica ◽  
Particle Surface ◽  
Core Shell ◽  
Silica Spheres ◽  
Laser Scattering ◽  
Monodispersed Particles ◽  
Core Shell Structure ◽  
Mesoporous Silica Spheres ◽  
Scattering Measurement

Particle size development of monodispersed mesoporous silica spheres (MMSS) was investigated by laser scattering measurement, TEM and XRD in situ. Smaller particles suddenly appeared after the commencement of the experiment, then growing homogeneously to larger particles. It is assumed that residual silica precursors in solution preferentially reacted with existing particle surface silanol, preventing generation of new particles. This leads to the formation of monodispersed particles. Based on the mechanism, monodispersed mesoporous silica spheres with core/shell structure have been newly synthesized.

Synthesis of Highly Monodispersed Core/Shell Mesoporous Silica Spheres

2006 ◽  
Vol 35 (9) ◽  
pp. 1014-1015 ◽  
Author(s):  
Kazuhisa Yano ◽  
Tadashi Nakamura
Keyword(s):  
Mesoporous Silica ◽  
Core Shell ◽  
Silica Spheres ◽  
Mesoporous Silica Spheres

Synthesis of Highly Monodispersed Core/Shell Mesoporous Silica Spheres

2006 ◽  
pp. 814-818
Author(s):  
Kazuhisa Yano ◽  
Tadashi Nakamura ◽  
Hiroshi Nozaki ◽  
Noritomo Suzuki ◽  
Yuusuke Akimoto
Keyword(s):  
Mesoporous Silica ◽  
Core Shell ◽  
Silica Spheres ◽  
Mesoporous Silica Spheres

Core–shell structured MgO@mesoporous silica spheres for enhanced adsorption of methylene blue and lead ions

RSC Advances ◽  
2015 ◽  
Vol 5 (26) ◽  
pp. 20440-20445 ◽  
Author(s):  
Chen-Xi Gui ◽  
Qian-Jie Li ◽  
Ling-Ling Lv ◽  
Jin Qu ◽  
Qian-Qian Wang ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Mesoporous Silica ◽  
Mechanical Stability ◽  
Silica Coating ◽  
Adsorption Rate ◽  
Lead Ions ◽  
Core Shell ◽  
Silica Spheres ◽  
Enhanced Adsorption ◽  
Mesoporous Silica Spheres

Mesoporous silica coating not only serves as a stable shell to improve the mechanical stability of MgO core, but also enriches the adsorbates into the mesopores to get higher adsorption rate and capacity than MgO spheres.

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