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从涂有二氧化钛基光催化剂的建筑材料上去除涂鸦涂料。

Removal of graffiti paint from construction materials coated with TiO-based photocatalysts.

作者信息

Jimenez-Relinque Eva, Rubiano Francisco Jose, Castellote Marta

机构信息

Department of Construction, Research Group of Sustainable Interaction of Construction Materials With the Environment, Eduardo Torroja Institute for Construction Science, IETcc (CSIC), Serrano Galvache 4, 28033, Madrid, Spain.

Department of Construction. Research Group of Structural Systems and Concrete, Eduardo Torroja Institute for Construction Science, IETcc (CSIC), Serrano Galvache 4, 28033, Madrid, Spain.

出版信息

Environ Sci Pollut Res Int. 2025 Apr;32(16):10653-10665. doi: 10.1007/s11356-024-34467-4. Epub 2024 Aug 1.

DOI:10.1007/s11356-024-34467-4
PMID:39090293
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11996951/
Abstract

Graffiti on construction materials has significant social and economic impacts, especially on artistic and historical artefacts. Anti-graffiti protective coatings are used to generate low surface energies that limit graffiti adhesion to the surface, thereby reducing surface damage and facilitating removal. The anti-graffiti properties of three commercial TiO-based coatings were tested under outdoor exposure conditions using four colours of graffiti paint (red, blue, black, and white). Chemical removers were used to clean the stained surfaces to understand the impact of the photocatalytic coatings during the conventional cleaning procedure. The effectiveness of cleaning was assessed by visual observations, colour measurements, and the percentage of residual stain. The anti-graffiti efficacy was strongly dependent on the colour of the graffiti and characteristics of the TiO coating. The cleaning performance of TiO-treated samples was likely related to the photocatalytic redox reactions that decompose the graffiti. Additionally, their hydrophilicity may also prevent the adhesion and/or penetration of graffiti paint on the surface and/or pore matrix.

摘要

建筑材料上的涂鸦具有重大的社会和经济影响，尤其是对艺术和历史文物。防涂鸦保护涂层用于产生低表面能，限制涂鸦与表面的附着力，从而减少表面损伤并便于清除。使用四种颜色的涂鸦漆（红色、蓝色、黑色和白色），在户外暴露条件下测试了三种商用二氧化钛基涂层的防涂鸦性能。使用化学清洁剂清洁染色表面，以了解光催化涂层在传统清洁过程中的影响。通过目视观察、颜色测量和残留污渍百分比来评估清洁效果。防涂鸦效果强烈依赖于涂鸦的颜色和二氧化钛涂层的特性。经二氧化钛处理的样品的清洁性能可能与分解涂鸦的光催化氧化还原反应有关。此外，它们的亲水性也可能阻止涂鸦漆在表面和/或孔隙基质上的附着和/或渗透。

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本文引用的文献

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Durability of anti-graffiti coatings on stone: natural vs accelerated weathering.石材表面抗涂鸦涂层的耐久性：自然风化与加速风化对比
PLoS One. 2017 Feb 23;12(2):e0172347. doi: 10.1371/journal.pone.0172347. eCollection 2017.
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