ISSN:
1551-2916
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Phase-pure brookite of high crystallinity, which was classically obtained via hydrothermal treatment, has been synthesized under ambient pressure at 70°C via reacting a mixed solution of urea and titanium (III) chloride (instead of the widely used titanium (IV) compounds). The resultant particles are monodispersed spheres (∼154 nm) composed of brookite nanocrystals (∼25 nm), which are stable in terms of phase purity and morphology up to ∼500°C, above which a direct transition to rutile occurred. The as-made powder has a high specific surface area of ∼41.2 m2/g, which rapidly decreased to ∼9.7 m2/g after transforming to rutile at 700°C. The brookite powder shows good catalytic property for the decomposition of acetaldehyde under UV radiation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1151-2916.2004.tb07735.x
