Photocatalytic degradation activity of titanium dioxide sol-gel coatings on stainless steel wire meshes

被引：43

作者：

Bestetti, M. ^{[1
]}

Sacco, D. ^{[1
]}

Brunella, M. F. ^{[1
]}

Franz, S. ^{[1
]}

Amadelli, R. ^{[2
]}

Samiolo, L. ^{[2
]}

机构：

[1] Politecn Milan, Dipartimento Chim Mat & Ingn Chim, I-20131 Milan, Italy

[2] Univ Ferrara, ISOF, CNR, Dipartimento Chim, I-44100 Ferrara, Italy

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2010年 / 124卷 / 2-3期

关键词：

Titanium dioxide; Sol-gel deposition; Wire meshes; Photocatalysis; Environment; TIO2 NANOTUBE ARRAYS; PHYSICOCHEMICAL PROPERTIES; PILKINGTON ACTIV(TM); METHYLENE-BLUE; THIN-FILMS; GLASS; FABRICATION; OXIDATION;

D O I：

10.1016/j.matchemphys.2010.08.062

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Stainless steel wire meshes have been functionalised with multiple titanium dioxide (TiO2) coatings deposited by the sol-get technique using titanium isopropoxide as precursor and titanium dioxide nanopowders dispersed in the colloidal solution After the thermal conversion of the amorphous fraction of the coating Into anatase the functionalised stainless steel wire meshes were tested for the UV photodegradation of aqueous solutions of methylene blue solid stearic acid and nitrogen oxides in air The addition of TiO2 nanopowders in the colloidal deposition solution enhanced the photocatalytic performance of the deposited TiO2 layers in all the tested conditions Moreover increasing the number of coatings (from 1 to 4) improves the photocatalytic efficiency The catalyst did not show reduced photoreactivity after four repeated cycles in water decontamination from methylene blue and after up to 10 repeated cycles in nitrogen oxides photodegradation Complete regeneration of the catalyst could be achieved by rinsing it with warm deionised water and was observed in the case of experiments for NOx abatement (C) 2010 Elsevier B V All rights reserved

引用

页码：1225 / 1231

页数：7

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