Development of a fluorescence-based method for evaluation of self-cleaning properties of photocatalytic layers

被引：47

作者：

Cernigoj, Urh ^{[1
]}

Kete, Marko ^{[1
]}

Stangar, Urska Lavrencic ^{[1
]}

机构：

[1] Univ Nova Gorica, Environm Res Lab, SI-5001 Nova Gorica, Slovenia

来源：

CATALYSIS TODAY | 2010年 / 151卷 / 1-2期

关键词：

Terephthalic acid; TiO2 thin film; Photocatalysis; Fluorescence; Standardization; RADICAL FORMATION; PILKINGTON ACTIV(TM); TIO2; ACID; DEGRADATION; REACTIVITY; OXIDATION; FILMS;

D O I：

10.1016/j.cattod.2010.03.043

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A new method for determination of self-cleaning activity of photocatalytic surfaces is proposed. It is based on the deposition of a transparent solid layer comprising terephthalic acid over the photocatalytic surface (three types of titania films on glass were used as test samples). When such a system was irradiated, among the other degradation products also a hydroxyterephthalic acid was formed due to a reaction between photoexcited TiO2 and terephthalic acid. Hydroxyterephthalic acid is a highly fluorescent molecule and it was detected by HPLC-FLD or spectrofluorimeter. This direct method of following quantitatively the formation of an oxidation product was found to be accurate, highly sensitive and reproducible, therefore, it represents a promising option to be considered in standardization efforts in the field of photocatalysis. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：46 / 52

页数：7

共 26 条

[1]

Cernigoj U, 2006, ACTA CHIM SLOV, V53, P29

[2] Photocatalytically active TiO2 thin films produced by surfactant-assisted sol-gel processing [J].

Cernigoj, U ;

Stangar, UL ;

Trebse, P ;

Krasovec, UO ;

Gross, S .

THIN SOLID FILMS, 2006, 495 (1-2) :327-332

[3] Determination of catalytic properties of TiO2 coatings using aqueous solution of coumarin: Standardization efforts [J].

Cernigoj, Urh ;

Stangar, Urska Lavrencic ;

Trebse, Polonca ;

Sarakha, Mohamed .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2009, 201 (2-3) :142-150

[4] Decolorization of organic dyes on Pilkington Activ™ photocatalytic glass [J].

Chin, Paul ;

Ollis, David F. .

CATALYSIS TODAY, 2007, 123 (1-4) :177-188

[5] Optimization of hydroxyl radical formation using TiO2 as photocatalyst by response surface methodology [J].

Eremia, Sandra A. V. ;

Chevalier-Lucia, Dominique ;

Radu, Gabriel-Lucian ;

Marty, Jean-Louis .

TALANTA, 2008, 77 (02) :858-862

[6] A comparative study of three techniques for determining photocatalytic activity [J].

Evans, P. ;

Mantke, S. ;

Mills, A. ;

Robinson, A. ;

Sheel, D. W. .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2007, 188 (2-3) :387-391

[7] ORGANIC DISULFIDES AND RELATED SUBSTANCES .30. PREPARATIONS AND REACTIONS OF MERCAPTOTEREPHTHALIC ACIDS AND DERIVATIVES [J].

FIELD, L ;

ENGELHAR.PR .

JOURNAL OF ORGANIC CHEMISTRY, 1970, 35 (11) :3647-&

[8] TiO2 photocatalysis and related surface phenomena [J].

Fujishima, Akira ;

Zhang, Xintong ;

Tryk, Donald A. .

SURFACE SCIENCE REPORTS, 2008, 63 (12) :515-582

[9] OXIDATION OF PHENOL BY RADIOLYTICALLY GENERATED (OH)-O-CENTER-DOT AND CHEMICALLY GENERATED SO4-CENTER-DOT- - A DISTINCTION BETWEEN (OH)-O-CENTER-DOT TRANSFER AND HOLE OXIDATION IN THE PHOTOLYSIS OF TIO2 COLLOID SOLUTION [J].

GOLDSTEIN, S ;

CZAPSKI, G ;

RABANI, J .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (26) :6586-6591

[10] Photocatalytic reactivity for O2•- and OH• radical formation in anatase and rutile TiO2 suspension as the effect of H2O2 addition [J].

Hirakawa, Tsutomu ;

Yawata, Kenta ;

Nosaka, Yoshio .

APPLIED CATALYSIS A-GENERAL, 2007, 325 (01) :105-111

← 1 2 3 →