Synthesis of Microporous Silica Spheres

2000 ◽  
Vol 227 (2) ◽  
pp. 302-315 ◽  
Author(s):  
R. Vacassy ◽  
R.J. Flatt ◽  
H. Hofmann ◽  
K.S. Choi ◽  
R.K. Singh
Keyword(s):  
Silica Spheres ◽  
Microporous Silica

Novel amorphous microporous silica spheres for controlled release applications

2011 ◽  
Vol 100 (10) ◽  
pp. 4295-4301 ◽  
Author(s):  
Els Verraedt ◽  
Guy Van den Mooter ◽  
Johan A. Martens
Keyword(s):  
Controlled Release ◽  
Silica Spheres ◽  
Microporous Silica

Magnetic properties of Ni nanoparticles on microporous silica spheres

2010 ◽  
Vol 322 (9-12) ◽  
pp. 1269-1274 ◽  
Author(s):  
Jeffrey F. Godsell ◽  
Keith P. Donegan ◽  
Joseph M. Tobin ◽  
Mark P. Copley ◽  
Fernando M.F. Rhen ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Silica Spheres ◽  
Ni Nanoparticles ◽  
Microporous Silica

Characterization of Metal-Doped Methylated Microporous Silica for Molecular Separations

2016 ◽  
Vol 2 (2) ◽  
pp. 85-100
Author(s):  
Tània Gumí ◽  
Hany El-Feky ◽  
Kelly Briceño ◽  
Kamila Szałata ◽  
Miguel Hevia
Keyword(s):  
Microporous Silica ◽  
Molecular Separations ◽  
Metal Doped

Localized Die Metallization Damage Induced During Laser-Marking of a Semiconductor Package

2007 ◽  
Author(s):  
Paul Eric B. Parañal
Keyword(s):  
Laser Beam ◽  
Direct Interaction ◽  
Silica Spheres ◽  
Layer By Layer ◽  
Laser Marking ◽  
Molding Compound ◽  
Molding Material ◽  
Die Surface ◽  
Passivation Layers ◽  
Propagation Medium

Abstract This paper presents a new fail mechanism for laser-marking induced die damage. Discovered during package qualification, silica spheres – commonly used as fillers in the molding material, was shown to act as a propagation medium that promote the direct interaction of the scribing laser beam and the die surface. Critical to the understanding of the fail mechanism is the deprocessing technique devised to allow layer by layer examination of the metallization and passivation layers in an encapsulated silicon die. The technique also made possible the inspection of the molding compound profile directly on top of the affected die area.

A phenylenediamine-based carbon dot-modified silica stationary phase for hydrophilic interaction chromatography

The Analyst ◽  
2020 ◽  
Vol 145 (3) ◽  
pp. 1056-1061 ◽  
Author(s):  
Yali Yang ◽  
Haijuan Zhang ◽  
Jia Chen ◽  
Zhan Li ◽  
Liang Zhao ◽  
...  
Keyword(s):  
Stationary Phase ◽  
Carbon Dots ◽  
Porous Silica ◽  
Hydrophilic Interaction Chromatography ◽  
Silica Spheres ◽  
Hydrophilic Interaction ◽  
Modified Silica ◽  
Carbon Dot ◽  
New Stationary Phase ◽  
Enhanced Selectivity

Red emitting carbon dots derived from p-phenylenediamine were successfully grafted onto the surface of porous silica spheres which served as a new stationary phase for hydrophilic interaction chromatography with enhanced selectivity.

Fabrication of Bifunctional SiO2/Europium-Polyoxometalates/Ag Particles and their Luminescence and Catalysis Properties

2013 ◽  
Vol 575-576 ◽  
pp. 216-224
Author(s):  
Jun Wang ◽  
Shao Hua Fan ◽  
Wei Qian Zhao ◽  
Wu Ke Li ◽  
Xue Lian Lu
Keyword(s):  
Main Product ◽  
Catalytic Properties ◽  
Uv Light ◽  
Luminescent Properties ◽  
Silica Spheres ◽  
Hybrid Particles ◽  
Red Emission ◽  
Transmission Electron ◽  
Ag Particles ◽  
Luminescent Spectra

In this paper, Stöber silica particles were decorated with polyethyleneimine and silver nanoparticles and Eu-polyoxometalates were grafted on the surface of polyethyleneimine/silica spheres. The hybrid SiO2/Eu-polyoxometalates/Ag particles were characterized by IR, UVvis, luminescent spectra, scanning electron microscopy, transmission electron microscope, and cyclic voltammetry (CV), respectively. The hybrid particles show the bright red emission under UV light which can be observed by naked eyes. The luminescent properties of particles have been investigated which show that Ag nanoparticles have an influences on the luminescence of europium ions. The electrochemical activities of SiO2/Eu-polyoxometalates/Ag particles have been demonstrated by CV measurement. The catalytic results indicate that the hybrid particles show the catalytic properties in the oxidation of styrene and benzaldehyde is the main product of the reaction.

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