Titanium dioxide and silver nanoparticles applied in mineral paints for outdoor and indoor environments

IF 2.3 4区 材料科学 Q2 CHEMISTRY, APPLIED Journal of Coatings Technology and Research Pub Date : 2024-03-27 DOI:10.1007/s11998-023-00909-w
Isabel C. R. Gomes, Katia J. Ciuffi, Liziane Marçal, Lucas A. Rocha, Eduardo J. Nassar
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Abstract

Here, we have evaluated water-based paint formulations containing mineral binders, silver nanoparticles, and titanium dioxide. Scanning electron microscopy analysis of dried film samples showed that the paint base was highly porous, and that paint formulations containing 10% and 20% titanium dioxide had different surface morphology. CIELab measurements for methylene blue coloration decay showed that photocatalysis was more efficient for the samples with 20% titanium dioxide. Under ultraviolet radiation, silver nanoparticles contributed to photocatalysis performance. Contact angles proved that titanium dioxide concentration and type defined the wetting characteristics. The samples with 20% TiO2 displayed porous surfaces with better adsorbance characteristics, higher wettability, and improved heterogeneous photocatalysis.

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应用于户外和室内环境矿物涂料中的二氧化钛和银纳米粒子
在这里,我们对含有矿物粘合剂、纳米银颗粒和二氧化钛的水性涂料配方进行了评估。对干燥薄膜样品的扫描电子显微镜分析表明,涂料基料具有高度多孔性,而含有 10% 和 20% 二氧化钛的涂料配方具有不同的表面形态。CIELab 对亚甲蓝颜色衰减的测量结果表明,二氧化钛含量为 20% 的样品的光催化效率更高。在紫外线辐射下,银纳米粒子对光催化性能有促进作用。接触角证明二氧化钛的浓度和类型决定了润湿特性。二氧化钛含量为 20% 的样品表面多孔,具有更好的吸附特性、更高的润湿性和更好的异相光催化性能。
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来源期刊
Journal of Coatings Technology and Research
Journal of Coatings Technology and Research 工程技术-材料科学:膜
CiteScore
4.30
自引率
8.70%
发文量
130
审稿时长
2.5 months
期刊介绍: Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.
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