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637025

Sigma-Aldrich

Cobalt(II,III) oxide

nanopowder, <50 nm particle size (SEM), 99.5% trace metals basis

Sinonimo/i:

Cobalt tetraoxide, Cobaltic-cobaltous oxide, Tricobalt tetraoxide

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About This Item

Formula condensata:
~Co3O4
Numero CAS:
Peso molecolare:
240.80
Numero MDL:
Codice UNSPSC:
12352302
ID PubChem:
NACRES:
NA.23

Saggio

99.5% trace metals basis

Forma fisica

nanopowder

Area superficiale

40-70 m2/g , typical range

Dimensione particelle

<50 nm (SEM)

Punto di fusione

895 °C (dec.) (lit.)

Densità

6.11 g/mL at 25 °C (lit.)

Densità bulk

0.57 g/mL

applicazioni

battery manufacturing

Stringa SMILE

O=[Co].O=[Co]O[Co]=O

InChI

1S/3Co.4O
LBFUKZWYPLNNJC-UHFFFAOYSA-N

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Descrizione generale

Cobalt oxide is a p-type semiconductor thatbelongs to the normal spinel crystal structure with cubic close packing ofoxide ions. It has variable oxidation states and multiple band gapenergies (2.28eV and 1.57eV). It is paramagnetic at room temperature.

Applicazioni

Cobalt(II,III) oxide nanoparticles can be used:

  • To modify the glassycarbon electrode for the detection of As(III) at nanomolar concentrationrange.
  • To prepare a robust photocatalyst along withcarbon nanospheres for dye degradation and hydrogen evolution reaction.
  • As an electrodematerial in the preparation of supercapacitors.

Pittogrammi

Health hazard

Avvertenze

Danger

Indicazioni di pericolo

Classi di pericolo

Aquatic Chronic 3 - Carc. 1A Inhalation - Resp. Sens. 1

Codice della classe di stoccaggio

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

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable


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