Effect of Silver on the Photocatalytic Activity of TiO2

✍ Scribed by W. Lee; H-S. Shen; K. Dwight; A. Wold

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 254 KB
• Volume: 106
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1993.1288

✦ Synopsis

Silver was deposited on (\mathrm{TiO}{2}) powders (Degussa P25) by the photodecomposition of two different silver salts, (\mathrm{AgF}) and (\mathrm{AgNO}{3}). The photocatalytic activity of (\mathrm{TiO}{2}) powder samples was evaluated by the degradation of 1,4-dichlorobenzene (DCB). Photodecomposition of (\mathrm{AgF}) on (\mathrm{TiO}{2}) gave higher photocatalytic activity than that of (\mathrm{AgNO}{3}). The optimum catalytic activity found by the deposition of (\mathrm{Ag}) was comparable to that obtained from (\mathrm{Au}). It was also observed that the photocatalytic activity of (\mathrm{Ag})-loaded (\mathrm{TiO}{2}) films was greater than that obtained for pure (\mathrm{TiO}{2}) films. This result is consistent with the results obtained for Ag-deposited (\mathrm{TiO}{2}) powders. 1993 Academic Press, Inc.