In-Flight Formation of Nano-Crystalline Titanium Dioxide Powder in a Plasma Jet and Its Characterization

被引：5
|
作者：
Ananthapadmanabhan, P. V. [1 ]
Vijay, M. [2 ]
Thiyagarajan, T. K. [1 ]
Sreekumar, K. P. [1 ]
Selvarajan, V. [2 ]
Yu, Jiaguo [3 ]
Liu, Shengwei [3 ]
机构：
[1] Bhabha Atom Res Ctr, Div Laser & Plasma Technol, Bombay 400085, Maharashtra, India
[2] Bharathiar Univ, Dept Phys, Coimbatore 641046, Tamil Nadu, India
[3] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
来源：
PLASMA SCIENCE & TECHNOLOGY | 2010年 / 12卷 / 04期
关键词：
nanostructures; titanium dioxide; arc plasma synthesis; reactive plasma processing; surface properties; THERMAL PLASMA; PHOTOCATALYTIC ACTIVITY; TIO2; NANOPARTICLES; OXIDATION; DEGRADATION; TEMPERATURE; PHENOL; FILMS;
D O I：
10.1088/1009-0630/12/4/09
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Nanocrystalline titanium dioxide powder was synthesized by in-flight oxidation of titanium dihydride (TiH2) powder in a thermal plasma jet. TiH2 powder was injected into the thermal plasma jet and allowed to react with oxygen injected down stream the jet. Characterization of the powder by various analytical tools indicated that the powder consisted of nano-sized titanium dioxide particles consisting predominantly of the anatase phase. It is suggested that the thermo-chemistry of the oxidation process contributes significantly to the formation of nano-sized titania. The large energy released during the oxidation process dissociates the TiO2 particles into TiO(g) and titanium vapour, which recombine downstream with oxygen and form nano particles of TiO2.
引用
收藏
页码：426 / 432
页数：7
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