Functionalized building materials: Photocatalytic abatement of NOx by cement pastes blended with TiO2 nanoparticles

被引：89

作者：

Cardenas, Carolina ^{[1
]}

Tobon, Jorge I. ^{[2
]}

Garcia, Claudia ^{[1
]}

Vila, Jaume ^{[3
]}

机构：

[1] Univ Nacl Colombia, Ceram & Glass Grp, Medellin 3840, Colombia

[2] Univ Nacl Colombia, CEMATCO, Grp Cemento & Mat Construcc, Medellin 3840, Colombia

[3] Inst Tecnol Construcc, Unidad Tecn Invest Mat, Aidico Valencia, Spain

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2012年 / 36卷

关键词：

Photocatalysis; Nanoparticles of TiO2; Portland cement; NOx abatement;

D O I：

10.1016/j.conbuildmat.2012.06.017

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

De-pollution activity of cement paste samples, added with 0.0%, 0.5%, 1.0%, 3.0% and 5.0% (based on the dry weight of the cement used) of titanium dioxide nanoparticles, TiO2, was evaluated through the degradation of nitrogen oxides, NOx, pollutants. Different blend of titania phases were considered as well, for each addition 100:0, 85:15 and 50:50 anatasa:rutile ratios were used. Measurements were carried out at two aging times, 65 h and 28 days, finding that at early ages the samples with the best photocatalytic activity, in terms of moles per square meter eliminated and percentage of conversion of NO and NOx, were the ones with a ratio of 85:15 and 5.0% of TiO2, while at late ages the samples with a ratio of 100:0 and 5.0% of TiO2. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：820 / 825

页数：6

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