Photocatalyst efficiencies in concrete technology: the effect of photocatalyst placement
Photocatalyst efficiencies in concrete technology: the effect of photocatalyst placement
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DOI：
10.1016/j.apcatb.2017.10.013
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发表时间：
2018-03
影响因子：
22.1
通讯作者：
Lu Yang;A. Hakki;Fazhou Wang;D. Macphee
中科院分区：
文献类型：
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作者：
Lu Yang;A. Hakki;Fazhou Wang;D. Macphee
到目前为止，光催化剂在混凝土技术中的应用已经是一个成熟的概念。然而，尽管暴露在大气中的大量混凝土表面带来了改善空气质量的巨大机会，特别是在空气质量受到汽车尾气和工业废气严重影响的城市，但光催化混凝土仍未得到主流应用。由于目前工业化国家城市中心的NOx污染水平大大超过了欧盟的立法指导方针，重要的是考虑这些问题是什么。更广泛实施的可能障碍可能包括成本效益，这需要与光催化剂的影响有关，但直接衡量对空气质量的影响的挑战是复杂的。本文试图将光催化效率放在背景下，比较传统光催化剂分散在表面砂浆涂料中的性能，以及负载在表面裸露聚集体上的光催化剂的性能。还讨论了催化剂与聚集体结合的性质和影响。
The application of photocatalysts in concrete technology is by now a well-established concept. However, despite the great opportunities for air quality improvements to be derived from the considerable concrete surfaces exposed to the atmosphere, particularly in cities where air quality is greatly affected by vehicle exhaust and industrial emissions, photocatalytic concretes are still not in mainstream application. With current levels of NOx pollution considerably exceeding EU legislative guidelines in urban centres throughout the industrialised world, it is important to consider what the issues are. The likely barriers to more widespread implementation are likely to include cost effectiveness, which needs to be related to photocatalyst impact, but the challenges in measuring impact on air quality directly are complex. This paper seeks to place photocatalytic efficiencies into context, comparing performances of the conventional photocatalyst dispersion in surface mortar coatings with that of photocatalysts supported on surface exposed aggregates. The nature and impact of catalyst binding to the aggregate is also discussed.