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Environ Sci Pollut Res Int

Title:		"Photocatalytic oxidation of selected gas-phase VOCs using UV light, TiO(2,) and TiO(2)/Pd"
Author(s):		Fujimoto TM; Ponczek M; Rochetto UL; Landers R; Tomaz E;
Address:		"Faculty of Chemical Engineering, University of Campinas-UNICAMP, Av. Albert Einstein, 500, Campinas, 13083-852, SP, Brazil. taniafujimoto@gmail.com. Faculty of Chemical Engineering, University of Campinas-UNICAMP, Av. Albert Einstein, 500, Campinas, 13083-852, SP, Brazil. 'Gleb Wataghin' Institute of Physics-IFGW, University of Campinas-UNICAMP, Av. Albert Einstein, 500, Campinas, 13083-852, SP, Brazil"
Journal Title:		Environ Sci Pollut Res Int
Year:		2017
Volume:		20160330
Issue:		7
Page Number:		6390 - 6396
DOI:		10.1007/s11356-016-6494-7
ISSN/ISBN:		1614-7499 (Electronic) 0944-1344 (Linking)
Abstract:		"Heterogeneous photocatalytic oxidation systems using titanium dioxide (TiO(2)) have been extensively studied for the removal of several volatile organic compounds (VOCs). The addition of noble metals such as palladium on TiO(2) may improve photocatalytic activity by increasing charge separation efficiency. In this work, palladium was impregnated on TiO(2) and the efficiency of the new catalyst was tested and compared with that of pure TiO(2). Pd was impregnated on TiO(2) by the reduction method, using NaBH(4), and was characterized by XRD, XPS, UV-Vis, and H(2) chemisorption. The photocatalytic tests were performed in an annular coated-wall reactor using octane, isooctane, n-hexane, and cyclohexane at inlet concentrations varying from 100 to 120 ppmv. Compared with pure TiO(2) film, the photocatalytic activity of TiO(2) impregnated with 1 wt% of palladium was improved. All the aforementioned analytical techniques confirmed the presence of Pd incorporated into the structure of TiO(2,) and the conversion rates were studied in a broad range of residence times, yielding up to 90 % or higher rates in 40 s of residence time, thus underscoring the relevant contribution of the technology"
Keywords:		Adsorption Air Pollutants/*isolation & purification Catalysis Hexanes/isolation & purification Octanes/isolation & purification Oxidation-Reduction Palladium/*chemistry Photochemical Processes Titanium/*chemistry *Ultraviolet Rays X-Ray Diffraction Gas ph;
Notes:		"MedlineFujimoto, Tania M Ponczek, Milena Rochetto, Ursula L Landers, Richard Tomaz, Edson eng Germany 2016/03/31 Environ Sci Pollut Res Int. 2017 Mar; 24(7):6390-6396. doi: 10.1007/s11356-016-6494-7. Epub 2016 Mar 30"