Photocatalytic degradation of gaseous toluene over ZnAl(2)O(4) prepared by different methods: A comparative study

Li, Xinyong, Zhu, Zhengru, Zhao, Qidong and Wang, Lianzhou (2011) Photocatalytic degradation of gaseous toluene over ZnAl(2)O(4) prepared by different methods: A comparative study. Journal of Hazardous Materials, 186 2-3: 2089-2096. doi:10.1016/j.jhazmat.2010.12.111


Author Li, Xinyong
Zhu, Zhengru
Zhao, Qidong
Wang, Lianzhou
Title Photocatalytic degradation of gaseous toluene over ZnAl(2)O(4) prepared by different methods: A comparative study
Formatted title
Photocatalytic degradation of gaseous toluene over ZnAl2O4 prepared by different methods: A comparative study
Journal name Journal of Hazardous Materials   Check publisher's open access policy
ISSN 0304-3894
1873-3336
Publication date 2011-02-28
Year available 2010
Sub-type Article (original research)
DOI 10.1016/j.jhazmat.2010.12.111
Volume 186
Issue 2-3
Start page 2089
End page 2096
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2012
Language eng
Formatted abstract
The development of a “green” treatment process for typical indoor pollutants such as toluene is greatly desirable. In this study, ZnAl2O4 nanoparticles were prepared via three different routes, i.e., solvothermal, citrate precursor and hydrothermal methods. Their structural properties were systematically investigated by X-ray powder diffraction (XRD), scanning electronic microscopy (SEM), energy-dispersive X-ray spectra (EDX), Brunauer–Emmett–Teller (BET), UV–vis diffuse reflectance spectroscopy (DRS), and Fourier transform infrared spectroscopy (FT-IR) techniques. The photo-induced charge separation in the samples was demonstrated by surface photovoltage (SPV) measurement. The photocatalytic performances of the ZnAl2O4 samples and nanostructured TiO2 samples were comparatively studied by the degradation of gaseous toluene under UV lamp irradiation in in situ FTIR reactor. The results indicated that the sample synthesized by facile solvothermal method exhibited about 90% photocatalytic efficiency of toluene. The toluene was mineralized into carbon dioxide and water as the major species. The photocatalytic oxidation of gaseous pollutant over UV-illuminated ZnAl2O4 is a promising technique for air purification.

Research highlights: ▶ ZnAl2O4 nanoparticles could be synthesized by a facile solvothermal method. ▶ ZnAl2O4 nanoparticles show high efficiency (90.25%) in photocatalytic degradation of toluene. ▶ The toluene could be finally mineralized into carbon dioxide and water.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 31 December 2010.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2012 Collection
 
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Created: Wed, 08 Feb 2012, 00:04:11 EST by Professor Lianzhou Wang on behalf of Functional Nanomaterials