Mesoporous layers of TiO2 as highly efficient photocatalysts for the purification of air

被引：32

作者：

Kalousek, Vit ^{[1
]}

Tschirch, Jessica ^{[2
]}

Bahnemann, Detlef ^{[2
]}

Rathousky, Jiri ^{[1
]}

机构：

[1] Acad Sci Czech Republ, J Heyrovsky Inst Phys Chem, CZ-18223 Prague 8, Czech Republic

[2] Leibniz Univ Hannover, Inst Tech Chem, D-30167 Hannover, Germany

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2008年 / 44卷 / 4-5期

关键词：

TiO2; Mesoporous film; Evaporation-induced self-assembly; Photocatalytic oxidation; NOx;

D O I：

10.1016/j.spmi.2007.12.004

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Mesoporous films of TiO2 prepared by a template-assisted procedure based on the evaporation-induced self-assembly mechanism were shown to be efficient photocatalysts for the oxidation of nitrogen oxide. Their high photocatalytic activity is explained by a local increase in the partial pressure of NO in the nanopores of the porous film close to the photocatalytic active sites. Owing to the strong adsorption of the intermediate products, a high selectivity towards nitric acid is achieved. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：506 / 513

页数：8

共 23 条

[1]

[Anonymous], 1987, ATMOSPHERIC POLLUTIO

[2] Enhancement effect of TiO2 immobilized on activated carbon filter for the photodegradation of pollutants at typical indoor air level [J].

Ao, CH ;

Lee, SC .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2003, 44 (03) :191-205

[3] Integrated system for the treatment of oxides of nitrogen from flue gases [J].

Barman, S ;

Philip, L .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2006, 40 (03) :1035-1041

[4] Mesoporous TiO2-based photocatalysts for UV and visible light gas-phase toluene degradation [J].

Bosc, F ;

Edwards, D ;

Keller, N ;

Keller, V ;

Ayral, A .

THIN SOLID FILMS, 2006, 495 (1-2) :272-279

[5] Synthesis and characterization of hydroxyapatite nanopowders by emulsion technique [J].

Bose, S ;

Saha, SK .

CHEMISTRY OF MATERIALS, 2003, 15 (23) :4464-4469

[6]

Brinker CJ, 1999, ADV MATER, V11, P579, DOI 10.1002/(SICI)1521-4095(199905)11:7<579::AID-ADMA579>3.3.CO

[7]

2-I

[8] Thermally stable two-dimensional hexagonal mesoporous nanocrystalline anatase, meso-nc-TiO2:: Bulk and crack-free thin film morphologies [J].

Choi, SY ;

Mamak, M ;

Coombs, N ;

Chopra, N ;

Ozin, GA .

ADVANCED FUNCTIONAL MATERIALS, 2004, 14 (04) :335-344

[9] Photocatalytic oxidation of NOx gases using TiO2:: a surface spectroscopic approach [J].

Dalton, JS ;

Janes, PA ;

Jones, NG ;

Nicholson, JA ;

Hallam, KR ;

Allen, GC .

ENVIRONMENTAL POLLUTION, 2002, 120 (02) :415-422

[10] TiO2 photocatalytic oxidation of nitric oxide:: transient behavior and reaction kinetics [J].

Devahasdin, S ;

Fan, C ;

Li, KY ;

Chen, DH .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2003, 156 (1-3) :161-170

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