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Bismuth Oxide - NanoArc® Bismuth Oxide Nanomaterials From Nanophase Technologies Corporation

Topics Covered

Integrated Family of Technologies
X-Ray Opacity
Products, Data and Specifications
     NanoArc® Bismuth Oxide
     Bismuth Oxide Nanopowders
     NanoArc® Bismuth Oxide  EXP 0250
     Bismuth Oxide Dispersions

Integrated Family of Technologies

As a leader in the field of nanomaterials technologies, Nanophase has evolved from solely a producer of nanoparticles into an integrator of commercially scaled nanomaterial technologies focused on market and customer applications. Nanophase Technologies Corporation manufactures a variety of nanocrystalline powders in commercial quantities. The nanocrystalline metal oxides typically have a mean particle size less than 100 nm, are non-porous single crystals, have defined surface chemistry, and are chemically pure. Further modification of these materials often involves vapor-phase coating to prepare a surface-modified dry powder, or liquid phase processing to prepare a dispersion that is compatible with the application. Nanophase’s family of integrated technologies economically produces nanocrystalline materials and then nanoengineers those materials to fit customer’s needs.

Figure 1. Nanophase development process

Nanophase’s development process is designed to produce the most advantageous nanomaterials solution for an application. The foundation technologies are the patented Physical Vapor Synthesis (PVS) process and patent pending NanoArc® Synthesis (NAS) process. These processes use plasma energy to produce pure, non-agglomerated, non-porous, single-phase metal and mixed metal oxide nanoparticles at annual capacities measured in tens of thousands of kilograms per reactor. Nanoparticle size and surface chemistry can be tailored for applications as the nanomaterial is produced.

This marks Nanophase’s entrée into the medical appliance industry and is another example of the use of nanotechnology to provide technology solutions in important applications in mainstay industries. Bismuth oxide has been used extensively for years in the medical appliance industry to impart X-ray opacity. As parts become smaller and thinner, it is difficult to incorporate bismuth oxide to achieve X-ray opacity without deteriorating the physical properties of the plastic or composite part. Because nanoparticles are so small, they can be incorporated at levels that provide the needed X-ray opacity without significantly affecting rheology, physical properties or surface characteristics.

X-Ray Opacity

NanoArc® Bismuth oxide can be incorporated into specialty polymers and materials for bone implants, dental prosthetic devices, catheters, sutures and surgical instruments to make them detectable by X-rays without the toxicity or carcinogenicity associated with other heavy metals. When incorporated into other plastics, benefits such as X-ray detection of toys and objects swallowed by children, or X-ray detection of plastic firearms at airport security stations, can be achieved.

Other applications for NanoArc® Bismuth Oxide nanoparticles include various electrochemical uses, such as in the electrolyte or cathode of solid oxide fuel cells (SOFC), for specific photoconductive characteristics in thin films as well as for use in bio-medical and cancer imaging.

Other applications for NanoArc® Bismuth Oxide include ceramic additives for varistors that are used for electrical surge protectors, additives to reduce processing temperatures for high-temperature ceramics that are used in gas and fluid detectors to improve automotive fuel efficiency and reduce smog and as additives into optical glass formulations to increase refractive index and specific gravity.

Products, Data and Specifications

NanoArc® Bismuth Oxide

Figure 2. NanoArc® Bismuth Oxide

  • Bi2O3, Purity:  99.5+%,
  • APS 40nm (determined from SSA)
  • SSA = 17m2/g (BET),
  • Appearance = Bright yellow powder
  • True Density = 8.9 g/cc
  • Morphology = Nearly Spherical Faceted
  • Crystal Phase = Tetragonal

Bismuth Oxide Nanopowders

NanoArc® Bismuth Oxide EXP 0250

An x-ray opaque particle, NanoArc® Bismuth Oxide can be compounded into polymers or coating systems to increase opacity to x-rays, while the small particle size ensures minimal disruption of physical properties. NanoArc® Bismuth Oxide can also be used as an astringent in a variety of medical creams and topical ointments.

Bismuth Oxide Dispersions

Nanophase has worked diligently for years to develop expertise in dispersing nanomaterials in water, polar organics and non-polar organics.  We offer most of our products in one or more standard dispersions.  We also offer the service of dispersing a nanomaterial in the bulk medium of your choice as long as it is of low viscosity, non toxic, and has a flash point greater than 100°F.

Date Added: Sep 13, 2006 | Updated: Jun 11, 2013
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