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Low Cost TiO2 Nanoparticles

Summary

Current 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.

Description

Sandia 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


Fast

Can be produced within hours


Predictable

Small size distribution (2-8 nm) without agglomeration

Applications and Industries

  • Anti-Reflective Coatings
  • Catalysis/Photocatalysis
  • Dye-Sensitized Solar Cells
  • Light Emitting Diodes

Intellectual Property

Title
ID Number
Patent Number
Date
High-yield synthesis of brookite TiO.sub.2 nanoparticles 10638.0 7,943,116 05/17/2011
Issued
Technology IDSD#10638Development StagePrototype - Sandia estimates this technology at a Technology Readiness Level 4. Key elements have been demonstrated in a laboratory environment.AvailabilityAvailable - Various License and partnering options are available. Please contact the Intellectual Property department to discuss. Published12/06/2011Last Updated05/20/2013