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199478

Sigma-Aldrich

Germanium(IV) oxide

(crystalline powder), 99.998% trace metals basis

Synonym(s):

Germanium dioxide

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About This Item

Linear Formula:
GeO2
CAS Number:
Molecular Weight:
104.64
EC Number:
MDL number:
UNSPSC Code:
12352303
PubChem Substance ID:
NACRES:
NA.23

Quality Level

Assay

99.998% trace metals basis

form

(crystalline powder)

mp

>400 °C (lit.)

density

4.23 g/cm3

application(s)

battery manufacturing

SMILES string

O=[Ge]=O

InChI

1S/GeO2/c2-1-3

InChI key

YBMRDBCBODYGJE-UHFFFAOYSA-N

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Application

Germanium(IV) oxide can be used:
  • To prepare glasses for nuclear radiation shielding and ultra-broadband amplification. For example, germanium and bismuth oxide glasses.
  • As a precursor to synthesize GeO2/TiO2 nanocomposites that can be used for the photocatalysis of organic pollutants.
  • As an anode material for lithium-ion batteries due to its high lithium storage capacity, thermostability, and large volume expansion during the charge–discharge process.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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P. M. Lambert
Inorganic chemistry, 37(6), 1352-1357 (2001-10-24)
The gel chemistry of germanium is explored through the formation and composition of a hydrous metal oxide precursor gel used in the preparation of the HfGeO(4) and HfGeO(4):Ti X-ray phosphors. The enhanced solubility of hexagonal GeO(2) in dilute ammoniacal solutions
Xinguo Hong et al.
The Review of scientific instruments, 80(7), 073908-073908 (2009-08-07)
We describe an approach for acquiring high quality x-ray absorption fine structure (XAFS) spectroscopy spectra with wide energy range at high pressure using diamond anvil cell (DAC). Overcoming the serious interference of diamond Bragg peaks is essential for combining XAFS
Xin-ben Zhang et al.
Optics express, 20(18), 19799-19805 (2012-10-06)
A GeO2 doped triangular-core photonic-crystal fiber (PCF) is designed and fabricated to allow the generation of a hollow beam through a nonlinear-optical transformation by femtosecond pulses at 1040 nm from a high power Yb-doped PCF laser oscillator. The hollow beam
Jiaqiang Wang et al.
Chemical communications (Cambridge, England), 46(29), 5250-5252 (2010-06-25)
Adding a small amount of commercial GeO(2) into aqueous suspension significantly enhanced the photocatalytic activity of titania-based photocatalysts for the degradation of dyes.
M Gunji et al.
Nanotechnology, 23(38), 385603-385603 (2012-09-06)
We report on the directed synthesis of germanium oxide (GeO(x)) nanowires (NWs) by locally catalyzed thermal oxidation of aligned arrays of gold catalyst-tipped germanium NWs. During oxygen anneals conducted above the Au-Ge binary eutectic temperature (T > 361 °C), one-dimensional

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