文章基本信息

标题：A Review on Pollution Eating and Self-Cleaning Properties of Cementitious Materials
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作者：Abhijeet Shukla ; Rao Faraz Waris ; Mohd. Arhab 等
期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2018
卷号：7
期号：3
页码：2784
DOI：10.15680/IJIRSET.2018.0703135
出版社：S&S Publications
摘要：Pollution controlling and smog-eating properties induced in a self-cleaning cementitious material wereidentified recently. Initially meant as a self-cleaning material, it was discovered that this material had the ability toreduce certain pollutants from surrounding air, and this reduction in the concentration of the pollutants depends uponthe surrounding conditions and the amount of exposed area. These properties induced in cementitious material weremainly due to the photocatalytic action of TiO2, which under the influence of sunlight acts as a catalyst and triggerschemical reaction due to that decomposition of dirt particles take place on the concrete’s surface, also it reacts withcertain pollutants that contribute to smog, breaking it under the presence of sunlight and accelerating their naturaloxidation process. It is found that it is very effective against the Nitrogen oxides (NOx), Sulphur oxides (SOx) andmany other harmful pollutants, which are mainly released due to the burning of fossil fuels and is one of the majorconstituents of smog. It decomposes NOx effectively up to a great extent in the surrounding environment and to aheight of about 2-3 meters above the surface. In simple words, this material showing photocatalytic property due toTiO2, when irradiated with sunlight accelerates the decomposition process of pollutants and dirt clearing up the smogand ultimately cleaning the environment and that is the reason why the term self-cleaning and smog-eating is given toit. This material has already found relevant applications, and is being used in a variety of projects such as self-cleaningwalls and in the reduction of urban pollutants and serves multiple purposes. Furthermore, the main focus of this paperis to explain the mechanisms involved and to understand the merits and demerits of using this cementitious material ina better way and also it aims at finding out ways in which it can contribute more to this new environmental friendlycivil engineering world.
关键词：Self-cleaning; Smog-eating; Pollution eating; Photo-catalytic; Clean and green Environment.