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vol.55 número3BLENDS OF POLY(4-VINYLPYRIDINE) AND DIHYDRIC PHENOLS: THERMAL AND INFRARED SPECTROSCOPIC STUDIES. PART IIIMICROENCAPSULATION OF TRIOCTYLAMINE IN POLYMERIC MATRICES FOR REMOVING Zn(II) AND Cu(II) FROM CHLORIDE AQUEOUS SOLUTIONS índice de autoresíndice de assuntospesquisa de artigos
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Journal of the Chilean Chemical Society

versão On-line ISSN 0717-9707

Resumo

MALDONADO, C et al. PHOTOCATALYTIC DEGRADATION OF TRICHLOROETHYLENE OVER SILVER NANOPARTICLES SUPPORTED ON TIO2. J. Chil. Chem. Soc. [online]. 2010, vol.55, n.3, pp.404-407. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072010000300029.

The photocatalytic degradation of trichloroethylene over Ag nanoparticles supported on TiO2 was studied. The photocatalysts were obtained by impregnation of Ag colloids on TiO2. They were characterized by XPS, TEM and UV-vis. Ag° nanoparticles were obtained with diameters between 2.0-3.2 nm. The photocatalysts were found to display band gap energies similar to those of pure TiO2, although the presence of Ag nanoparticles results in the formation of a plasmon resonance band in the visible range. The photocatalytic activity of the Ag/TiO2 samples to remove trichlorethylene (TCE) in gas phase was tested. With visible light, up to 60% of conversion was obtained.

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