Innovative and stable TiO2 supported catalytic surfaces removing aldehydes under UV-light irradiation

被引：24

作者：

Elfalleh, W. ^{[1
]}

Assadi, A. A. ^{[2
]}

Bouzaza, A. ^{[2
]}

Wolbert, D. ^{[2
]}

Kiwi, J. ^{[3
]}

Rtimi, S. ^{[4
]}

机构：

[1] Univ Gabes, URCMEP, UR11ES85, Campus Univ Cite Erriadh, Gabes 6072, Tunisia

[2] CNRS, Lab Sci Chim Rennes, Equipe Chim & Ingn Proc, UMR 6226,ENSCR 11, Allee Beaulieu,CS 508307, F-35708 Rennes, France

[3] Ecole Polytech Fed Lausanne, SB, ISIC, GPAO,Stn 6, CH-1015 Lausanne, Switzerland

[4] Ecole Polytech Fed Lausanne, STI, IMX, LTP,Stn 12, CH-1015 Lausanne, Switzerland

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2017年 / 343卷

关键词：

TiO2-PES; Batch photo-reactor; Kinetics; Intermediate by-products; GC-MS; L-H isotherms; Degradation kinetics; PHOTOCATALYTIC OXIDATION; ISOVALERALDEHYDE ELIMINATION; ANNULAR REACTOR; SOL-GEL;

D O I：

10.1016/j.jphotochem.2017.04.029

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The present study reports the photocatalytic degradation of aldehydes using TiO2 impregnated polyester (PES) and glass fiber (GFT)-TiO2 addressing the photocatalytic degradation aldehydes (air-solid interface). The PES-TiO2 optical absorption was determined by diffuse reflectance spectroscopy (DRS). By X-ray diffraction (XRD), the formation of TiO2 anatase on the PES surface was detected. The photocatalytic oxidation (PCO) of butyraldehyde and isovaleraldehyde was carried out in a batch photo-reactor equipped with a UV-mercury Philips 9W lamp and mediated by glass fiber GFT-TiO2 and PES-TiO2 surfaces. The removal of these two aldehydes was found to be a function of pollutant concentrations. The stable catalytic reuse of both catalysts reported. A Langmuir Hinshelwood (L-H) model describes the degradation kinetics on PES-TiO2 and on GFF-TiO2. The aldehyde degradation by-products were analyzed by gas chromatography mass spectrometry (GC-MS). Three organics intermediates identified during the aldehyde degradation were: acetones, alcohols and fatty acids. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：96 / 102

页数：7

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