Solar Photocatalytic Degradation of Atrazine in Water by TiO2/Ag Nanocomposite

作者: Ming Ge , Assaf Azouri , Kun Xun , Klaus Sattler , Joe Lichwa

DOI: 10.1115/MN2006-17070

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摘要: One of the most common herbicides in the world, Atrazine, was used as a model pollutant in this study. The photocatalytic activities of the nanocomposite of TiO2/Ag, with nanopaticles of TiO2 and Ag, were investigated by photodegradation of atrazine under the natural sun. It was found that the efficiency of solar-photocatalytic activity was increased significantly by using the nanocomposites of TiO2/Ag, compared to the use of TiO2 alone. The mechanism of the TiO2/Ag composite for enhancement of photocatalytic activity was elucidated in this work.

参考文章(25)
Prashant V. Kamat, Photophysical, photochemical and photocatalytic aspects of metal nanoparticles Journal of Physical Chemistry B. ,vol. 106, pp. 7729- 7744 ,(2002) , 10.1021/JP0209289
Gerrit Boschloo, Donald Fitzmaurice, Spectroelectrochemical Investigation of Surface States in Nanostructured TiO2 Electrodes Journal of Physical Chemistry B. ,vol. 103, pp. 2228- 2231 ,(1999) , 10.1021/JP984414E
J.A. Herrera Melián, J.M. Doña Rodrı́guez, A. Viera Suárez, E. Tello Rendón, C. Valdés do Campo, J. Arana, J. Pérez Peña, The photocatalytic disinfection of urban waste waters Chemosphere. ,vol. 41, pp. 323- 327 ,(2000) , 10.1016/S0045-6535(99)00502-0
Robert G. Breckenridge, William R. Hosler, Electrical properties of titanium dioxide semiconductors electrical insulation conference. ,vol. 91, pp. 793- 802 ,(1950) , 10.1103/PHYSREV.91.793
L. Forro, O. Chauvet, D. Emin, L. Zuppiroli, H. Berger, F. Lévy, High mobility n‐type charge carriers in large single crystals of anatase (TiO2) Journal of Applied Physics. ,vol. 75, pp. 633- 635 ,(1994) , 10.1063/1.355801
Gerrit K. Boschloo, Albert Goossens, Electron Trapping in Porphyrin-Sensitized Porous Nanocrystalline TiO2 Electrodes The Journal of Physical Chemistry. ,vol. 100, pp. 19489- 19494 ,(1996) , 10.1021/JP961553S
N. Serpone, D. Lawless, R. Khairutdinov, Ezio Pelizzetti, Subnanosecond Relaxation Dynamics in TiO2 Colloidal Sols (Particle Sizes Rp = 1.0-13.4 nm). Relevance to Heterogeneous Photocatalysis The Journal of Physical Chemistry. ,vol. 99, pp. 16655- 16661 ,(1995) , 10.1021/J100045A027
D. Philip Colombo, Kirsten A. Roussel, Jamal Saeh, David E. Skinner, Joseph J. Cavaleri, Robert M. Bowman, Femtosecond study of the intensity dependence of electron-hole dynamics in TiO2 nanoclusters Chemical Physics Letters. ,vol. 232, pp. 207- 214 ,(1995) , 10.1016/0009-2614(94)01343-T
T. Rajh, L. X. Chen, K. Lukas, T. Liu, M. C. Thurnauer, D. M. Tiede, Surface Restructuring of Nanoparticles: An Efficient Route for Ligand−Metal Oxide Crosstalk Journal of Physical Chemistry B. ,vol. 106, pp. 10543- 10552 ,(2002) , 10.1021/JP021235V