TiO_(2)基环境稳定性光催化自清洁涂层的设计及制备  

Design and preparation of TiO_(2)-based environmentally stable photocatalytic self-cleaning coatings

作　　者：王鹏刚[1] 陈睿馨 逄博 张敏 孙晓光 凌梓峻 张海洋 WANG Penggang;CHEN Ruixin;PANG Bo;ZHANG Min;SUN Xiaoguang;LING Zijun;ZHANG Haiyang(School of Civil Engineering,Qingdao University of Science and Technology,Qingdao 266525,China;Shandong Chambroad Eco-friendly Materials Co.,Ltd.,Binzhou 256600,China)

机构地区：[1]青岛理工大学土木工程学院,青岛266525 [2]山东京博环保材料有限公司,滨州256600

出　　处：《复合材料学报》2025年第3期1387-1401,共15页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(U22A20229);山东省自然科学基金(ZR2021ME0081);山东省泰山学者计划(tsqn202306031)。

摘　　要：将光催化活性与超疏水性相结合,一方面,涂层利用表面超疏水作用能够将污染物通过水珠带走;另一方面,光催化作用能够对有机污染物进行降解,同时维持材料的超疏水特性。通过洞渣制石英砂(Quartz sand)协同TiO_(2)构筑微纳米粗糙结构,以聚甲基氢硅氧烷(PMHS)和钛酸四丁酯(TBT)作为低表面能物质,制备了坚固耐磨的PMHS/TBT-Quartz sand-TiO_(2)光催化自清洁成膜涂层。结果表明,涂层接触角为154.4°,滚动角小于10°。TiO_(2)有效地负载到石英砂表面,构造了优异的微纳米粗糙结构。涂层具有优良的光催化活性,可降解表面有机物小分子去除空气中的氮氧化物。此外,涂层在经过连续摩擦损伤、长期紫外暴露、冻融循环等不同的破坏形式后,仍能保持环境稳定性。Combining photocatalytic activity with superhydrophobicity,on the one hand,the surface superhydrophobicity can be utilized to carry away pollutants through water droplets,and on the other hand,photocatalysis can degrade organic pollutants and maintain the superhydrophobicity of the materials.A robust and wear-resistant PMHS/TBT-Quartz sand-TiO_(2) photocatalytic self-cleaning film-forming coating was prepared by constructing a microand nano-scrubber structure with quartz sand made from cave slag in synergy with TiO_(2),and using poly(methylhydrosiloxane)(PMHS)and tetrabutyl titanate(TBT)as the low-surface-energy substances.The results show that the contact angle of the coating is 154.4°,and the rolling angle is less than 10°.TiO_(2) is effectively loaded onto the surface of quartz sand,and an excellent micro and nano rough structure is constructed.The coating has excellent photocatalytic activity,which can degrade small organic molecules on the surface to remove nitrogen oxides in the air.In addition,the coating remains environmentally stable after continuous friction damage,long-term UV exposure,freeze-thaw cycles and other forms of damage.

关 键 词：超疏水 光催化 微纳米粗糙结构 自清洁 复合涂层 

分 类 号：TB332[一般工业技术—材料科学与工程]