Krishnamurthy Anirudh, Salunkhe Buddhabhushan, Zore Ashish, Rownaghi Ali, Schuman Thomas, Rezaei Fateme
ACS Appl Mater Interfaces. 2019 May 8;11(18):16594-16604. doi: 10.1021/acsami.9b02934. Epub 2019 Apr 24.
High levels of indoor air CO in commercial buildings can lead to various health effects, commonly known as sick building syndrome. Passive control of indoor air CO through solid adsorbents incorporated into the paint offers a high potential to handle CO without utilizing much energy. This study focuses on incorporating silica-supported aminopolymers into a polyacrylic-based latex that could be used as a buffer material for the passive control of CO in enclosed environments. To maximize the effect of the pigment (adsorbent), paints were all prepared at critical pigment volume concentration (CPVC) levels. CO at 800 and 3000 ppm were used to asses both low and high level contaminations. The removal efficiency of the surface coatings was evaluated within typical time frames (10 h for adsorption and desorption). Our laboratory-scale chamber results indicated that the silica-tetraethylenepentamine-based paint with 70 wt % loading exhibits the best adsorption performance, comparable to that of the powder-based sorbent, with only a ∼20% decrease in the adsorption efficiency. Our results also revealed that the optimization of paint formulation is critical in passively controlling indoor air CO. The findings of this study highlight the potential of amine-based adsorbents as pigments in high PVC paints for indoor CO control in commercial buildings.
商业建筑中室内空气中高浓度的一氧化碳会导致各种健康问题，通常被称为“病态建筑综合征”。通过将固体吸附剂加入涂料中来被动控制室内空气中的一氧化碳，在不消耗大量能源的情况下处理一氧化碳具有很大潜力。本研究重点在于将二氧化硅负载的氨基聚合物加入到聚丙烯酸乳胶中，该乳胶可作为封闭环境中被动控制一氧化碳的缓冲材料。为了使颜料（吸附剂）的效果最大化，所有涂料均在临界颜料体积浓度（CPVC）水平下制备。使用800 ppm和3000 ppm的一氧化碳来评估低浓度和高浓度污染情况。在典型的时间范围内（吸附和解吸均为10小时）评估表面涂层的去除效率。我们实验室规模的试验箱结果表明，负载量为70 wt%的二氧化硅-四乙烯五胺基涂料表现出最佳的吸附性能，与粉末状吸附剂相当，吸附效率仅降低约20%。我们的结果还表明，涂料配方的优化对于被动控制室内空气中的一氧化碳至关重要。本研究结果突出了胺基吸附剂作为高PVC涂料中的颜料在商业建筑室内一氧化碳控制方面的潜力。
