High Surface Area Oxide Powders by Coprecipitation
University of Maryland
posted on 08/06/2009
Researchers at the University of Maryland have come up with a novel coprecipitation method for the preparation of nanocrystalline oxide particles with uniform size distribution.
Advantages
- Precipitation occurs at room temperature.
- As synthesized materials are crystalline.
- No further annealing is needed for crystallization.
- Particle size ranging from 1.5-3 nm.
- Relatively inexpensive.
- No formation of hard agglomerates during preparation.
Detailed Description
Nanosized oxide materials with high surface area are of interest for a wide range of applications including gas sensors, abrasives, electrode materials for solid oxide fuel cells, etc. Various solution based coprecipitation methods for synthesizing these nanosized oxide materials have been reported. These conventional coprecipitation methods use chemicals such as ammonium hydroxide and hydrazine hydrate, urea, etc as the precipitation agents. However, each of these conventional methods has the disadvantage that hard agglomerates are formed.
Researchers at the University of Maryland have come up with a novel coprecipitation method for the preparation of nanocrystalline oxide particles with uniform size distribution.
File Number: PS-2007-113
Web site: http://www.otc.umd.edu
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