« Previous Abstract"Inhibition of bacterial and filamentous fungal growth in high moisture, nonsterile corn with intermittent pumping of trans-2-hexenal vapor"    Next Abstract"Highly efficient, enantioselective synthesis of (+)-grandisol from a C2-symmetric bis(alpha,beta-butenolide)" »

Environ Sci Pollut Res Int

Title:		Effect of catalyst calcination temperature in the visible light photocatalytic oxidation of gaseous formaldehyde by multi-element doped titanium dioxide
Author(s):		de Luna MDG; Laciste MT; Tolosa NC; Lu MC;
Address:		"Department of Chemical Engineering, University of the Philippines, Diliman, 1101, Quezon City, Philippines. Environmental Engineering Program, National Graduate School of Engineering, University of the Philippines, Diliman, 1101, Quezon City, Philippines. Environmental Research and Laboratory Services Division, Environmental Management Bureau, Department of Environment and Natural Resources, 1101, Quezon City, Philippines. Department of Environmental Resources Management, Chia Nan University of Pharmacy and Science, Tainan, 71710, Taiwan. mmclu@mail.cnu.edu.tw"
Journal Title:		Environ Sci Pollut Res Int
Year:		2018
Volume:		20180320
Issue:		15
Page Number:		15216 - 15225
DOI:		10.1007/s11356-018-1720-0
ISSN/ISBN:		1614-7499 (Electronic) 0944-1344 (Linking)
Abstract:		"The present study investigates the influence of calcination temperature on the properties and photoactivity of multi-element doped TiO(2). The photocatalysts were prepared by incorporating silver (Ag), fluorine (F), nitrogen (N), and tungsten (W) into the TiO(2) structure via the sol-gel method. Spectroscopic techniques were used to elucidate the correlation between the structural and optical properties of the doped photocatalyst and its photoactivity. XRD results showed that the mean crystallite size increased for undoped photocatalysts and decreased for the doped photocatalysts when calcination was done at higher temperatures. UV-Vis spectra showed that the absorption cut-off wavelength shifted towards the visible light region for the as-synthesized photocatalysts and band gap narrowing was attributed to multi-element doping and calcination. FTIR spectra results showed the shifting of OH-bending absorption bands towards increasing wave numbers. The activity of the photocatalysts was evaluated in terms of gaseous formaldehyde removal under visible light irradiation. The highest photocatalytic removal of gaseous formaldehyde was found at 88%. The study confirms the effectiveness of multi-element doped TiO(2) to remove gaseous formaldehyde in air by visible light photocatalysis and the results have a lot of potential to extend the application to other organic air contaminants"
Keywords:		"Air Pollutants/*analysis/radiation effects Air Pollution, Indoor/analysis/prevention & control Catalysis Formaldehyde/*analysis/radiation effects Hot Temperature *Light Oxidation-Reduction Surface Properties Titanium/*chemistry Volatile Organic Compounds/;"
Notes:		"Medlinede Luna, Mark Daniel G Laciste, Maricris T Tolosa, Nolan C Lu, Ming-Chun eng NSC 101-2923-E-041-001-MY2/National Science Council/ N/A/Department of Science and Technology, Philippines/ Germany 2018/03/22 Environ Sci Pollut Res Int. 2018 May; 25(15):15216-15225. doi: 10.1007/s11356-018-1720-0. Epub 2018 Mar 20"