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Key Documents

938157

Sigma-Aldrich

Silica

new

hollow nanoparticles, 500  nm particle size, pore size 20 Å

Synonym(s):

Hollow silica, Hollow silica nanospheres, Hollow silicon dioxide, Silicon dioxide

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About This Item

Linear Formula:
SiO2
CAS Number:
Molecular Weight:
60.08
MDL number:
UNSPSC Code:
12352309

Quality Level

form

powder

particle size

500  nm

pore size

20 Å pore size

bp

2230 °C (lit.)

mp

>1600 °C (lit.)

SMILES string

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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General description

Our hollow silica nanoparticles are precisely engineered spherical particles of silicon dioxide. These particles have a uniform particle size of 500 nm comprised of a porous silica shell, with an average pore size of 20 Å, that surrounds the central hollow cavity. The structure and design of these nanoparticles play a vital role in determining their unique physical characteristics. These properties include low density, a large specific surface area, low dielectric constant, low electrical and thermal conductivity, as well as abnormal light scattering behavior.

Application

Hollow silica nanoparticles are extensively studied for their applications across multiple fields, including drug delivery, catalysis, thermal insulation, and functional coatings. For example, the combination of their low density, significant surface area, easily modifiable surface, and low toxicity makes them highly appealing for loading drug molecules or catalysts onto their surfaces.

Pictograms

Health hazard

Signal Word

Danger

Hazard Statements

Precautionary Statements

Hazard Classifications

STOT RE 1 Inhalation

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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Recent Trends in Morphology-Controlled Synthesis and Application of Mesoporous Silica Nanoparticles
Pal N, et al.
Nanomaterials (Basel, Switzerland), 10(11), 2122-2122 (2020)
Silica nanoparticles: A review of their safety and current strategies to overcome biological barriers
Janjua TI , et al.
Advanced Drug Delivery Reviews, 203, 115115-115115 (2023)

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