Durability of nano-engineered TiO2 self-cleaning treatments on limestone

被引：74

作者：

Munafo, Placido ^{[1
]}

Quagliarini, Enrico ^{[1
]}

Goffredo, Giovanni Battista ^{[1
]}

Bondioli, Federica ^{[2
]}

Licciulli, Antonio ^{[3
]}

机构：

[1] Polytech Univ Marche, Dept Civil & Bldg Engn & Architecture, I-60131 Ancona, Italy

[2] Univ Modena & Reggio Emilia, Dept Mat & Environm Engn, I-41100 Modena, Italy

[3] Univ Salento, Dept Engn Innovat, I-73100 Lecce, Italy

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2014年 / 65卷

关键词：

Titanium dioxide; Photocatalysis; Self-cleaning treatment; Nanocoatings durability; Limestone; Accelerated weathering; Architectural heritage; CLAY BRICK FACADES; PHOTOCATALYTIC ACTIVITY; BUILDING-MATERIALS; UV EXPOSURE; COATINGS; STONE; NANOPARTICLES; DEGRADATION; TITANIA; TOLUENE;

D O I：

10.1016/j.conbuildmat.2014.04.112

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Titanium dioxide (TiO2) colloidal suspensions applied by spray-coating have been used to deposit transparent self-cleaning coatings on stones with the aim of preserving the original aesthetic features of historical and monumental architectures. Travertine was chosen as the reference substrate. Compatibility with travertine and self-cleaning efficiency were analysed by indoor laboratory tests. The self-cleaning ability of TiO2 is mostly dependant on the photocatalysis generated by ultraviolet light. The stones were artificially aged through different procedures and the photo-activity of TiO2 was evaluated before and after the ageing. Results seem to encourage the use of nano-structured TiO2 for preserving stone during time. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：218 / 231

页数：14

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