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Surface Properties and De-polluting Performance of a Photocatalytic Coating Incorporating Novel Core@shell Nanospheres for Cementitious Substrate by Zhengxian Yang; Jiankun Xu; Wencheng Wang; Yong Zhang; Lu Yang is a Engineering article available to read on EtoBox.

What is Surface Properties and De-polluting Performance of a Photocatalytic Coating Incorporating Novel Core@shell Nanospheres for Cementitious Substrate about?

The surface of long-term exposed building materials usually shows serious deterioration under continuous environmental erosion, which can greatly shorten the service life of building structures. The application prospect of multifunctional photocatalytic materials in civil engineering is promising but the engineering application is still limited due to the inherent defects of traditional photocatalytic materials. In this paper, the ordinary Portland cement (OPC) and alkali activated slag (AAS) mortar samples were prepared with a photocatalytic coating incorporating novel core@shell nanospheres which feature with TiO2 core and CoAl-layered double hydroxide shell (TiO2@CoAl-LDH). The surface roughness, microhardness, contact angle and capillary water absorption of coated and uncoated mortars were analyzed and characterized to explore the effect of photocatalytic coating on surface properties. The photocatalytic activity and photo-induced hydrophilicity of the coated mortar were investigated by degrading methylene blue and contact angle tests. A simulated rainwater washing test was designed to evaluate the long-term stability of photocatalytic coatings on mortar substrate. The results

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Author

Zhengxian Yang; Jiankun Xu; Wencheng Wang; Yong Zhang; Lu Yang

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)