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http://dx.doi.org/10.5757/JKVS.2013.22.3.138

Photocatalytic Activity of ZnO Nanoparticles and Their Stability in Water Solvent  

Nam, Sang-Hun (Department of Chemistry and Institute of Basic Science, Sungkyunkwan University)
Boo, Jin-Hyo (Department of Chemistry and Institute of Basic Science, Sungkyunkwan University)
Publication Information
Journal of the Korean Vacuum Society / v.22, no.3, 2013 , pp. 138-143 More about this Journal
Abstract
Recently, ZnO nanoparticles have been studied in various application fields due to their physico-chemical properties. In this study, we have researched on the ZnO photocatalytic activity by redox reaction. ZnO nanoparticles have low photocatalytic activity in comparison with $TiO_2$ nanoparticles because it has the disadvantage that the formation of $Zn(OH)_2$ in water solvent. Therefore, we were synthesized ZnO nanoparticles by spray-pyrolysis method, and then studied on stability in water solvent. At the results, the water treated-ZnO nanoparticles showed higher photocatalytic activity than non-treated ZnO nanoparticles because molecular $H_2O$ was increased onto the ZnO surface under the water treatment. Also, we confirmed that the ZnO nanoparticles synthesized by spray-pyrolysis method is very stable in the water solvent.
Keywords
Znic oxide; Photocatalyst; Water solvent; X-ray photoelectron spectroscopy; Photocatalytic activity;
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1 A. Fujishima and K. Honda, Nature 238, 37 (1972).   DOI   ScienceOn
2 M. R. Hoffmann, S. T. Martin, W. Choi, and D. W. Bahnemann, Chem. Rev. 95, 69 (1995).   DOI   ScienceOn
3 A. Mills and S. L. Hunte, J. Photochem. Photobiol. A 108, 1 (1997).   DOI   ScienceOn
4 A. L. Linsebigler, G. Lu, and J. T. Yates, Chem. Rev. 95, 735 (1995).   DOI   ScienceOn
5 W. Kubo and T. Tatsuma, J. Am. Chem. Soc. 128, 16034 (2006).   DOI   ScienceOn
6 H. S. Lee, K. H. Kim, S. K. Kang, and W. M. Lee, Prospective of Industrial Chemistry 7, 27 (2004).
7 L. Guczi, D. Horvath, Z. Paszti, and G. Peto, Catal. Today 72, 101 (2002).   DOI   ScienceOn
8 M. Strongin, S. L. Qiu, J. Chen, and C. L. Lin, Phys. Rev. B 41, 10 (1990).