One-Pot Preparation of Hollow Silica Spheres by Using Thermosensitive Poly(N-isopropylacrylamide) as a Reversible Template

Langmuir ◽  
2009 ◽  
Vol 25 (20) ◽  
pp. 12367-12373 ◽  
Author(s):  
Binyang Du ◽  
Zheng Cao ◽  
Zhenbing Li ◽  
Aixiong Mei ◽  
Xinghong Zhang ◽  
...  
Keyword(s):  
Silica Spheres ◽  
One Pot ◽  
Hollow Silica ◽  
Hollow Silica Spheres

One-pot synthesis of molybdenum oxide nanoparticles encapsulated in hollow silica spheres: an efficient and reusable catalyst for epoxidation of olefins

2017 ◽  
Vol 5 (35) ◽  
pp. 18518-18526 ◽  
Author(s):  
Yasutaka Kuwahara ◽  
Naoyuki Furuichi ◽  
Hiroyuki Seki ◽  
Hiromi Yamashita
Keyword(s):  
Molybdenum Oxide ◽  
Oxide Nanoparticles ◽  
Reusable Catalyst ◽  
Silica Spheres ◽  
Olefin Epoxidation ◽  
One Pot ◽  
Hollow Silica ◽  
Hollow Silica Spheres ◽  
Molybdenum Oxide Nanoparticles ◽  
Epoxidation Of Olefins

A facile one-pot method was developed to synthesize hollow silica spheres encapsulating MoOx nanoparticles, which could act as an efficient and reusable catalyst in olefin epoxidation.

One-Pot Pathway: Fabricating Ordered Hollow Silica Spheres Using Sodium Silicate as the Precursor

2011 ◽  
Vol 64 (12) ◽  
pp. 1541 ◽  
Author(s):  
Weiwei Wu ◽  
Xinhua Yuan ◽  
Shunsheng Cao ◽  
Yi Ge ◽  
Songjun Li ◽  
...  
Keyword(s):  
Sodium Silicate ◽  
Low Cost ◽  
Reaction System ◽  
Silica Spheres ◽  
One Pot ◽  
Hollow Silica ◽  
Hollow Silica Spheres ◽  
Silica Source ◽  
Transmission Electron ◽  
Cationic Monomer

The preparation of hollow silica spheres via the sodium silicate route presents many advantages such as a low-cost silica source, and an environmentally friendly reaction system. Unfortunately, it is extremely hard to prepare the well-defined hollow silica spheres by using sodium silicate as the silica source owing to its rapid, disordered precipitation under the acid catalysis. As a result, we, in this paper, report a facile, economic, one-pot pathway for preparation of the ordered hollow silica spheres by employing a sodium silicate precursor. In this approach, the cationic polystyrene (CPS) templates can be first prepared via emulsifier-free emulsion polymerization by using the cationic monomer vinylbenzyltrimethylammonium chloride, then, the silica shells were attached on the surfaces of CPS particles via electrostatic interaction, finally CPS particles were in situ dissolved and removed by adding toluene to create ordered hollow silica spheres. Some modern techniques and instruments, including the transmission electron microscope, scanning electron microscopy, infrared spectroscopy, thermogravimetric analysis, and Brunauer-Emmett-Teller theory were employed to monitor and characterize the resulting hollow silica spheres.

Ultralow thermal conductivity in graphene–silica porous ceramics with a special saucer structure of graphene aerogels

2019 ◽  
Vol 7 (4) ◽  
pp. 1574-1584 ◽  
Author(s):  
Junmei Fan ◽  
Si Hui ◽  
Trevor P. Bailey ◽  
Alexander Page ◽  
Ctirad Uher ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Spark Plasma Sintering ◽  
Porous Ceramics ◽  
Silica Spheres ◽  
Hollow Silica ◽  
Graphene Aerogels ◽  
Hollow Silica Spheres ◽  
Plasma Sintering ◽  
Spark Plasma

Graphene aerogels grown on hollow silica spheres through spark plasma sintering lead to ultralow thermal conductivity and high compressive strength.

Fabrication of hollow silica spheres using droplet templates derived from a miniemulsion technique

2008 ◽  
Vol 321 (1) ◽  
pp. 67-73 ◽  
Author(s):  
Bo Peng ◽  
Min Chen ◽  
Shuxue Zhou ◽  
Limin Wu ◽  
Xiaohua Ma
Keyword(s):  
Silica Spheres ◽  
Hollow Silica ◽  
Hollow Silica Spheres

Preparation of porous hollow silica spheres via a layer-by-layer process and the chromatographic performance

2017 ◽  
Vol 11 (1) ◽  
pp. 33-41 ◽  
Author(s):  
Xiaobing Wei ◽  
Cairong Gong ◽  
Xujuan Chen ◽  
Guoliang Fan ◽  
Xinhua Xu
Keyword(s):  
Silica Spheres ◽  
Layer By Layer ◽  
Hollow Silica ◽  
Hollow Silica Spheres
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