208515

Sigma-Aldrich

Niobium(V) oxide

−325 mesh, 99.9% trace metals basis

Synonym(s):
Niobium pentoxide
Empirical Formula (Hill Notation):
Nb2O5
CAS Number:
Molecular Weight:
265.81
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23
Pricing and availability is not currently available.

Quality Level

assay

99.9% trace metals basis

form

powder

particle size

−325 mesh

density

4.47 g/mL at 25 °C (lit.)

SMILES string

O=Nb(=O)ONb(=O)=O

InChI

1S/2Nb.5O

InChI key

ZKATWMILCYLAPD-UHFFFAOYSA-N

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Application

Applied in the solid state formation of an unusual cation deficient perovskite, Ba7Nb4MoO20.
Promising results were obtained using niobium(V) oxide as an alternate electrode to lithium metal in advanced fuel cells.

Packaging

25, 100, 500 g in poly bottle
1 g in glass bottle

Features and Benefits

Applied in the solid state formation of an unusual cation deficient perovskite, Ba7Nb4MoO20.

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

NONH for all modes of transport

WGK Germany

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Leliz T Arenas et al.
Talanta, 83(1), 241-248 (2010-11-03)
A film of niobium oxide was immobilized on a SiO(2)/C carbon-ceramic matrix (specific surface area 270 m(2)g(-1)) and characterized by N(2) adsorption-desorption isotherms, scanning electron microscopy, X-ray photoelectron spectroscopy and atomic force microscopy. This new carbon-ceramic material, SiO(2)/C/Nb(2)O(5), was used...
Takashi Hisatomi et al.
Advanced materials (Deerfield Beach, Fla.), 24(20), 2699-2702 (2012-04-18)
A 2-nm thick Nb(2)O(5) underlayer deposited by atomic layer deposition increases the charge separation efficiency and the photovoltage of ultrathin hematite films by suppressing electron back injection. Absorbed photon-to-current efficiencies (APCE) as high as 40%, which are one of the...
Garcia-Gonzalez, E. et al.
Chemistry of Materials, 11, 433-433 (1999)
Robert L Karlinsey et al.
Bioinspiration & biomimetics, 1(1), 12-19 (2007-08-03)
The formation aspects of a polycrystalline self-assembled bioceramic leading to the nucleation of hard-tissue mineral from a supersaturated solution are discussed. Scanning electron imaging and surface-sensitive interrogations of the nucleated mineral indicated the presence of an intermediate amorphous layer encompassing...
Hye-Na Kim et al.
ACS applied materials & interfaces, 4(11), 5821-5825 (2012-11-17)
This paper describes the use of Nb₂O₅-coated TiO₂ 3D ordered porous electrodes in dye-sensitized solar cells. We employed bilayer inverse opal structures as a backbone of 3D porous structures, and the number of Nb₂O₅ coatings was controlled, determining the concentration...

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