Highly active photocatalytic paint for NOx abatement under real-outdoor conditions

被引：62

作者：

Angelo, Joana ^{[1
]}

Andrade, Luisa ^{[1
]}

Mendes, Adelio ^{[1
]}

机构：

[1] Univ Porto, LEPABE Fac Engn, P-4200465 Oporto, Portugal

来源：

APPLIED CATALYSIS A-GENERAL | 2014年 / 484卷

基金：

欧洲研究理事会;

关键词：

NOx abatement; Photocatalysis; Titanium dioxide; Photocatalytic paint; NITROGEN-OXIDES; PHASE PHOTOOXIDATION; TIO2; PHOTOCATALYSIS; DEGRADATION; FUNDAMENTALS; OXIDATION; TITANIA;

D O I：

10.1016/j.apcata.2014.07.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work the photocatalytic activity of paints incorporating commercial titanium dioxide for outdoor nitrogen oxide (NO) photoabatement is assessed. The paint acts as a 3D support of the photocatalyst and thus allows a larger amount of TiO2 nanoparticles to absorb light and to contact with pollutants, when compared with a 2D photocatalytic surface. NO conversion and selectivity towards nitrites and nitrates were determined according to the standard ISO 22197-1:2007 (E). Paint coatings were formulated and tested under laboratory and outdoor conditions. The best paint formulation incorporates CristalACTiV(TM) PC500 photocatalyst from Cristal and calcium carbonate extender, presenting a NO conversion of ca. 70% and a selectivity of ca. 40% under laboratory conditions. The same photocatalyst but characterized in the form of an optically thick film of compressed powder presented ca. 95% and 45% of conversion and selectivity, respectively. Under the real-outdoor conditions, the best performing paint showed a NO conversion of about 95%. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：17 / 25

页数：9

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