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2341351 
Journal Article 
Photocatalytic conversion of gaseous ethylbenzene on lanthanum-doped titanium dioxide nanotubes 
Cheng, Z; Feng, Li; Chen, JM; Yu, JM; Jiang, YiF 
2013 
Yes 
Journal of Hazardous Materials
ISSN: 0304-3894
EISSN: 1873-3336 
Netherlands 
254-255 (June 15 
354-363 
English 
23643959 
WOS:000321079000042 
The photocatalytic properties of titanium dioxide (TiO2) make it an attractive material for environmental remediation. In the present study, lanthanum (La(3+))-doped TiO2 nanotubes with excellent photocatalytic activity were fabricated by a combination of sol-gel method and hydrothermal technique. The optimal preparation parameters were determined by the structural characterization using a range of methods and the photocatalytic degradation of gaseous ethylbenzene (EB). Compared with pure TiO2 nanoparticles, 1.2%-La(3+)-doped - titania nanotubes (1.2%-La(3+)-TNTs) exhibited higher activity under 254 nm UV for conversion of EB. The initial EB concentrations and relative humidity (RH) obviously influenced the photocatalytic activity of 1.2%-La(3+)-TNTs. Kinetic analysis showed that surface adsorption and surface reaction controlled the rate-determining step for RH of 40-50% and >80%, respectively. Gas chromatography and mass spectrometry were used to analyze the intermediates generated in the conversion of EB, allowing a tentative decomposition pathway to be proposed. The prepared photocatalyst exhibited enhanced EB conversion compared with undoped TiO2, and showed a promise for the decomposition of recalcitrant compounds before subsequent biopurification. Copyright © 2013 Elsevier B.V. All rights reserved. 
Benzene Derivatives; Lanthanum; Index Medicus; Titanium; Photolysis; Nanotubes; Catalysis; Air Pollutants; Ultraviolet Rays; 2013) 
• Ethylbenzene
     New Litsearch 4/2019
          PubMed