637246
Silicon dioxide
nanopowder (spherical, porous), 5-20 nm particle size (TEM), 99.5% trace metals basis
Synonym(s):
Silica, Nanosilica, Silicon dioxide
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About This Item
Linear Formula:
SiO2
CAS Number:
Molecular Weight:
60.08
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.23
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Assay
99.5% trace metals basis
form
nanopowder (spherical, porous)
surface area
590-690 m2/g , TEM
particle size
5-20 nm (TEM)
bp
2230 °C (lit.)
mp
>1600 °C (lit.)
density
2.2-2.6 g/mL at 25 °C
bulk density
0.068 g/mL
SMILES string
O=[Si]=O
InChI
1S/O2Si/c1-3-2
InChI key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
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General description
Porous silicon dioxide nanopowder, also known as silica or silicon dioxide is a fine, white powder with a porous structure. It is composed of nanoscopic particles of silicon dioxide, 5-20 nm in size and has a high surface area due to its porous structure.
Application
Silicon dioxide finds applications in various fields, ranging from catalysis to composite synthesis. Some major studies are listed here:
- Pickering emulsion polymerization using a silicon dioxide nanoparticle stabilizer to form molecularly imprinted polymers for steroid recognition.
- Mesoporous silica is used as a catalyst support in the preparation of multiwalled carbon nanotubes (MWCNTs).
- It is used as a ring opening of tetrahydrofuran-dimethanol to 1,2,6-hexanetriol.
- It maybe used to prepare silica/brominated poly(phenylene oxide) nanocomposites membranes for CO2 seperations.
- The composite scaffold of chitosan/chondroitin sulfate/nano-SiO2 was fabricated by lyophilization.
- Nanocomposites preparation of silica, single-wall carbon nanotubes, and graphite nanoplatelets in an epoxy matrix have been reported.6
- Dielectric spectroscopy study of the polystyrene/nanosilica model system has been studied.
- PMMA SiO2 nanocomposites were reported to be synthesized.
Storage Class Code
11 - Combustible Solids
WGK
nwg
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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Catalyst studies on the ring opening of tetrahydrofuran-dimethanol to 1, 2, 6-hexanetriol
Buntara T, et al.
Catalysis Today, 210, 106-116 (2013)
Effect of surface modification of silica nanoparticles on toxicity and cellular uptake by human peripheral blood lymphocytes in vitro
Lankoff A, et al.
Nanotoxicology, 7(3), 235-250 (2011)
Carbon nanotube bundles self-assembled in double helix microstructures.
Cervantes-Sodi F, et al.
Carbon, 50(10), 3688-3693 (2010)
Molecularly imprinted polymer beads prepared by pickering emulsion polymerization for steroid recognition
Zhou T, et al.
Journal of Applied Polymer Science, 131(1) (2014)
Nanocomposite membranes for CO2 separations: silica/brominated poly (phenylene oxide)
Hu X, et al.
Industrial & Engineering Chemistry Research, 46(5), 1547-1551 (2007)
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