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Sigma-Aldrich

Oxyde d′aluminium

nanopowder, 13 nm primary particle size (TEM), 99.8% trace metals basis

Synonyme(s) :

Aluminia, Alumina

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About This Item

Formule linéaire :
Al2O3
Numéro CAS:
Poids moléculaire :
101.96
Numéro CE :
Numéro MDL:
Code UNSPSC :
12352303
eCl@ss :
38120402
ID de substance PubChem :
Nomenclature NACRES :
NA.23

Pureté

99.8% trace metals basis

Forme

nanopowder

Superficie

85-115 m2/g , BET

Taille primaire des particules

13 nm (TEM)

Pf

2040 °C (lit.)

Chaîne SMILES 

O=[Al]O[Al]=O

InChI

1S/2Al.3O

Clé InChI

TWNQGVIAIRXVLR-UHFFFAOYSA-N

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Description générale

Aluminum oxide nanoparticles (AlNPs) are porous nanomaterials with corundum-like structures. They possess high surface area, mechanical strength, and good optical properties. In addition, they have excellent chemical stability in harsh conditions such as abrasive environments and high temperatures. The ease of surface modification and bioinertess make them suitable for biomedical applications. These nanomaterials can be prepared by a cost-effective and simple protocol.

Application

Aluminum nanoparticles can be used to prepare:
  • Water-based nanofluids, which are used in engine cooling, heat exchangers, and nuclear cooling system. In graphene oxide/alumina nanofluid, the addition of aluminum nanoparticles improves the physical structure of graphene oxide and reduces the viscosity of the composite.
  • Polysiloxane-aluminum oxide composites, applicable as an elastomeric thermal pad for light-emitting diodes.
It can also be used as an additive to improve the mechanical properties of polyvinyl chloride. The Al2O3 nanoparticles act as a solid inert phase in the polymer matrix and restrict the mobility of chains. As a result glass transition temperature increases and elastic modulus decreases.

Caractéristiques et avantages

  • Stable in a harsh non-biological environment.
  • They can be easily prepared through established synthesis methods.
  • A vast surface area allows conjugation with chemical and biological molecules.
  • Their surface modification protocols are straightforward.
  • They can easily interact with biological interfaces.

Code de la classe de stockage

13 - Non Combustible Solids

Classe de danger pour l'eau (WGK)

nwg

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable


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