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Photocatalytic Properties of the Ag-Doped TiO2 Prepared by Sol-Gel Process/Photodeposition
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 Title & Authors
Photocatalytic Properties of the Ag-Doped TiO2 Prepared by Sol-Gel Process/Photodeposition
Kim, Byeong-Min; Kim, Jung-Sik;
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nanoparticles were synthesized by a sol-gel process using titanium tetra isopropoxide as a precursor at room temperature. Ag-doped nanoparticles were prepared by photoreduction of on under UV light irradiation and calcinated at . Ag-doped nanoparticles were characterized for their structural and morphological properties by X-ray diffractometry (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and transmission electron microscopy (TEM). The photocatalytic properties of the and Ag-doped nanoparticles were evaluated according to the degree of photocatalytic degradation of gaseous benzene under UV and visible light irradiation. To estimate the rate of photolysis under UV () and visible () light, the residual concentration of benzene was monitored by gas chromatography (GC). Both undoped/doped nanoparticles showed about 80 % of photolysis of benzene under UV light. However, under visible light irradiation Ag-doped nanoparticles exhibited a photocatalytic reaction toward the photodegradation of benzene more efficient than that of bare . The enhanced photocatalytic reaction of Ag-doped nanoparticles is attributed to the decrease in the activation energy and to the existence of Ag in the host lattice, which increases the absorption capacity in the visible region by acting as an electron trapper and promotes charge separation of the photoinduced electrons () and holes (). The use of Ag-doped nanoparticles preserved the option of an environmentally benign photocatalytic reaction using visible light; These particles can be applicable to environmental cleaning applications.
photodeposition;sol-gel process;Ag-doped ;photodegradation;photocatalytic reaction;
 Cited by
M. Anpo and M. Takeuchi, J. Catal., 216, 505 (2003). crossref(new window)

A. Fujishima and K. Honda, Bull. Chem. Soc. Jpn., 44, 1148 (1971). crossref(new window)

A. Fujishima and K. Honda, Nature, 238, 37 (1972). crossref(new window)

S. D. Mo and L. B. Lin, J. Phys. Chem. Solid., 55, 1309 (1994). crossref(new window)

K. Vinodgopal, D. E. Wynkoop and P. V. Kamat, Environ. Sci. Tech., 30, 1660 (1996). crossref(new window)

V. Vamathevan, R. Amal, D. Beydoun, G. Low and S. McEvoy, J. Photochem. Photobiol. Chem., 148, 233 (2002). crossref(new window)

J. M. Herrmann, J. Disdier and P. Pichat, J. Phys. Chem., 90, 6028 (1986). crossref(new window)

K. Shiba, H. Hinode and M. Wakihara, React. Kinet. Catal. Lett., 64, 281 (1998). crossref(new window)

G. Fu, P. S. Vary and C. T. Lin, J. Phys. Chem. B, 109, 8889 (2005). crossref(new window)

N. Nino-Martinez, G. A. Martinez-Castanon, A. Aragon-Pina, F. Martinez-Gutierrez, J. R. Martinez-Mendoza and Facundo Ruiz, Nanotechnology, 19, 065711 (2008). crossref(new window)

A. L. Patterson, Phys. Rev., 56, 978 (1939). crossref(new window)

R. A. Spurr and H. Myers, Anal. Chem., 29, 760 (1957). crossref(new window)

A. Peled and N. Mirchin, Photo-Excited Process, Diagnostics and Applications (PEPDA), Aaron Peled ed., p.251, Kluwer Academic Publishers, Netherlands (2003).

C. Crisafulli, S. Scire, S. Giuffrida, G. Ventimiglia and R. Lo Nigro, Appl. Catal. Gen., 306, 51 (2006). crossref(new window)

S. Giuffrida, G. G. Conderelli, L. L. Costanzo, G. Ventimiglia, R. Lo Nigro, M. Favazza, E. Votrico, C. Bongiorno and I. L. Fragala, J. Nanopart. Res., 9, 611 (2007). crossref(new window)

S. Scire, C. Crisafulli, S. Giuffrida, G. Ventimiglia, C. Bongiorno and C. Spinella, J. Mol. Catal. Chem., 333, 100 (2010). crossref(new window)

J. C. Scaiano, P. Billone, C. M. Gonzalez, L. Marett, M. L. Marin, K. L. McGilvray and N. Yuan, Pure. Appl. Chem., 81, 635 (2009).

A. L. Linsebigler, G. Lu and J. T. Yates, Chem. Rev., 95, 735 (1995). crossref(new window)

D. Yang, S. E. Park, J. K. Lee and S. W. Lee, J. Cryst. Growth, 311, 508 (2009). crossref(new window)

C. Suwanchawalit, S. Wongnawa, P. Sriprang and P. Meanha, Ceram. Int., 38, 5201 (2012). crossref(new window)

D. Zhang, X. Song, R. Zhang, M. Zhang and F. Liu, Eur. J. Inorg. Chem., 2005, 1643 (2005). crossref(new window)