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Low Cost TiO2 Nanoparticles

Sandia National Laboratories

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PDF Document PublicationMarket Sheet (866 KB)

TEM image of TiO<sub>2 </sub>nanoparticles taken at 50kx magnification demonstrates discrete and stable end product.
TEM image of TiO2 nanoparticles taken at 50kx magnification demonstrates discrete and stable end product.

Technology Marketing SummaryCurrent methods of producing titanium dioxide nanoparticles require costly surfactants and/or high temperature and pressure processing. Processing under these conditions results in nanoparticles with extremely wide particle size distributions and significant particle agglomeration. These problems are the primary reasons why TiO2 has had such difficulty transitioning from the laboratory to the marketplace. However, discrete, uniform TiO2 nanoparticles show great  potential in numerous markets, including lighting, signage, automotive and solar energy for their excellent conversion efficiency and increased brightness. The large refractive index of TiO2 makes the material ideal for use in nanocomposites.DescriptionSandia has developed an elegant and economically advantageous method to synthesize titanium dioxide nanoparticles. The synthesis requires only three inexpensive and commercially available reagents: titanium isopropoxide, isopropanol and water. The nanoparticles are synthesized at room temperature and ambient pressure in less than 24 hours. The nanoparticles produced are 5 nanometers in size with a narrow size distribution. They are discrete (non-aggregated) and stable in solution. In addition, these particles can be surface-functionalized to suit a wide variety of needs.Benefits

Cost Effective
Utilizes readily available, low cost, surfactants and solvents

Easy Scale-up

Process can be easily introduced to large scale industrial applications

Can be produced within hours

Small size distribution (2-8 nm) without agglomeration

Applications and Industries
  • Anti-Reflective Coatings
  • Catalysis/Photocatalysis
  • Dye-Sensitized Solar Cells
  • Light Emitting Diodes
Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Patent 7,943,116
High-yield synthesis of brookite TiO.sub.2 nanoparticles
A method for forming non-agglomerated brookite TiO.sub.2 nanoparticles without the use of expensive organic surfactants or high temperature processing. Embodiments of this invention use titanium isopropoxide as the titanium precursor and isopropanol as both the solvent and ligand for ligand-stabilized brookite-phase titania. Isopropanol molecules serve as the ligands interacting with the titania surfaces that stabilize the titania nanoparticles. The isopropanol ligands can be exchanged with other alcohols and other ligands during or after the nanoparticle formation reaction.
Sandia National Laboratories 05/17/2011
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
US Patent #7,943,116 /SD #10638Development - Sandia estimates this technology at approximately TRL 4.Available - Various License and partnering options are available. Please contact the Intellectual Property department to discuss. 12/01/201103/19/2013

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