Self-cleaning and de-polluting stone surfaces: TiO2 nanoparticles for limestone

被引：139
作者：
Quagliarini, Enrico [1 ]
Bondioli, Federica [2 ]
Goffredo, Giovanni Battista [1 ]
Cordoni, Caterina [1 ]
Munafo, Placido [1 ]
机构：
[1] Polytech Univ Marche, Dept Architecture Construct & Struct, I-60131 Ancona, Italy
[2] Univ Modena & Reggio Emilia, Dept Mat & Environm Engn, I-41100 Modena, Italy
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2012年 / 37卷
关键词：
Titanium dioxide; Self-cleaning treatment; De-pollution; Photocatalysis; Limestone; Stone surfaces conservation; Urban environment; Architectural heritage; PHOTOCATALYSIS; OXIDATION; COATINGS; TITANIA;
D O I：
10.1016/j.conbuildmat.2012.07.006
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
To evaluate the self-cleaning and de-polluting properties of a transparent titania coating, in this investigation a titanium dioxide based suspension was deposited by spray coating on travertine, a porous limestone largely used as building material. To assess compatibility with stone substrates, microstructure analysis, color and gloss measurements, static contact angle analysis and two different water absorption tests were carried out. Self-cleaning and de-polluting activities were assessed by the use of rhodamine B decoloration and NO degradation tests. The results showed good compatibility with stone surfaces and evident efficiency, allowing the use of titania coatings for real outdoor applications. (C) 2012 Elsevier Ltd. All rights reserved.
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收藏
页码：51 / 57
页数：7
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