Synthesis of niobia nanocrystals with controlled morphology
Article Abstract:
A study describes how TT niobia-phase nanocrystals with controlled morphology were obtained by the hydrothermal treatment of a niobium peroxo complex precursor at very low temperatures. The materials obtained by this route present a very high surface area, ranging from 79 to 327 mg2/g, disordered Nb[O.cub.6], Nb[O.sub.7], and Nb[O.sub.8] polyhedra, Nb-O superficial sites, and a superficial OH group, which must have ensured the acidic characteristics of this oxide.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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Electrical properties of niobium-doped titanium dioxide: 1: Defect disorder
Article Abstract:
The electrical conductivity and thermoelectric power for Nb-doped Ti[O.sub.2] are reported at elevated temperatures in the gas phase of controlled oxygen activity. The equilibrium constant is determined for the formation of oxygen vacancies and titanium vacancies for Nb-doped Ti[O.sub.2] and the results have shown that in reduced conditions the Nb-doped Ti[O.sub.2] exhibits metallic-type conductivity.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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Growth of SnO nanobelts and dendrites by a self-catalytic VLS process
Article Abstract:
SnO nanobelts and dendrites were prepared by a self-catalytic vapor-liquid-solid (VLS) process using a carbothermal synthesis approach and investigated. The results indicated that the nanobelts were single crystalline and had a width/thickness ratio of 4 to 12 and the nanobelts grew in the [110] direction of orthorhombic structure of SnO.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
User Contributions:
Comment about this article or add new information about this topic:
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