Characterization and visible light photocatalytic properties of nanocrystalline TiO2 synthesized by reactive plasma processing

被引：31

作者：

Vijay, M. ^{[1
]}

Selvarajan, V. ^{[1
]}

Sreekumar, K. P. ^{[2
]}

Yu, Jiaguo ^{[3
]}

Liu, Shengwei ^{[3
]}

Ananthapadmanabhan, P. V. ^{[2
]}

机构：

[1] Bharathiar Univ, Dept Phys, Coimbatore 641046, Tamil Nadu, India

[2] Bhabha Atom Res Ctr, Div Laser & Plasma Technol, Mumbai 400085, Maharashtra, India

[3] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2009年 / 93卷 / 09期

关键词：

Nanostructures; Titanium dioxide; Reactive plasma synthesis; Photocatalytic activity; Surface properties; Enhanced optical absorbance; TITANIUM-DIOXIDE; HYDROXYL-GROUPS; DEGRADATION; OXYGEN; MICROSTRUCTURES; NANOPARTICLES; ADSORPTION; MECHANISM; OXIDATION; CATALYSTS;

D O I：

10.1016/j.solmat.2009.04.004

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Nanocrystalline titanium oxide powder has been synthesized by reactive plasma processing. The precursor powder of TiH2 is oxidized 'in-flight' in a thermal plasma reactor to generate nanocrystalline titania powder. The synthesized powder consists of nano-sized particles of anatase and rutile phases of titanium dioxide. Photocatalytic activity of the plasma-synthesized powder was evaluated by studying the degradation of methylene blue dye solution under direct sunlight as well as UV irradiation. FTIR spectroscopy and X-ray photoelectron spectroscopy have been used to analyze the catalytic activity of the plasma-synthesized powder. UV-visible diffused reflectance spectra of the plasma-synthesized TiO2 samples showed that they absorb in the visible region leading to effective photocatalytic activity in sunlight. The results corroborated that the plasma-synthesized powder can be effectively used for outdoor applications. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1540 / 1549

页数：10

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