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TiO2基环境稳定性光催化自清洁涂层的设计及制备

王鹏刚 陈睿馨 逄博 张敏 孙晓光 凌梓峻 张海洋

王鹏刚, 陈睿馨, 逄博, 等. TiO2基环境稳定性光催化自清洁涂层的设计及制备[J]. 复合材料学报, 2024, 42(0): 1-15.
引用本文: 王鹏刚, 陈睿馨, 逄博, 等. TiO2基环境稳定性光催化自清洁涂层的设计及制备[J]. 复合材料学报, 2024, 42(0): 1-15.
WANG Penggang, CHEN Ruixin, PANG Bo, et al. Design and preparation of TiO2-based environmentally stable photocatalytic self-cleaning coatings[J]. Acta Materiae Compositae Sinica.
Citation: WANG Penggang, CHEN Ruixin, PANG Bo, et al. Design and preparation of TiO2-based environmentally stable photocatalytic self-cleaning coatings[J]. Acta Materiae Compositae Sinica.

TiO2基环境稳定性光催化自清洁涂层的设计及制备

基金项目: 山东省自然科学基金(ZR2021ME0081);国家自然科学基金(U22A20230622);山东省泰山学者计划(项目编号:tsqn202306031)
详细信息
    通讯作者:

    逄博,博士,硕士生导师,研究方向为有机无机复合材料,修补材料,机敏材料,界面粘结 E-mail:pangbo@qut.edu.cn

  • 中图分类号: TB332

Design and preparation of TiO2-based environmentally stable photocatalytic self-cleaning coatings

Funds: Natural Science Foundation of Shandong Province (ZR2021ME0081); National Natural Science Foundation of China (U22;A20230622); Taishan Scholar Program of Shandong Province (Project No. 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TiO2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-TiO2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°。TiO2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。

     

  • 图  1  光催化自清洁涂层的制备流程

    Figure  1.  Preparation process for the photocatalytic self-cleaning coating

    图  2  聚甲基氢硅氧烷(PMHS)/钛酸四丁酯(TBT)-Quartz Sand-TiO2涂层的SEM照片以及AFM粗糙度分析

    Figure  2.  The SEM photos of the poly(methylhydrosiloxane) (PMHS)/tetrabutyl titanate (TBT)-Quartz Sand-TiO2 coating as well as the AFM roughness analysis

    图  3  TiO2疏水化改性前后的红外光谱图

    Figure  3.  Infrared spectra of TiO2 before and after hydrophobic modification

    图  4  PMHS/TBT-Quartz Sand-TiO2涂层的X射线光电子能谱

    Figure  4.  The X-ray photoelectron energy spectrum of the PMHS/TBT-Quartz Sand-TiO2 coating

    图  5  PMHS/TBT-Quartz Sand-TiO2涂层的热重分析

    Figure  5.  A thermogravimetric analysis of the PMHS/TBT-Quartz Sand-TiO2 coating

    图  6  PMHS/TBT-Quartz Sand-TiO2涂层表面的超疏水性能

    Figure  6.  Superhydrophobic properties of the PMHS/TBT-Quartz Sand-TiO2 coating surface

    图  7  PMHS/TBT-Quartz Sand-TiO2涂层的耐油酸降解性能

    Figure  7.  The oleic acid-resistant degradation properties of the PMHS/TBT-Quartz Sand-TiO2 coating

    图  8  在光降解试验的9 h过程中,通过照片表征MB脱色的变化情况

    (插图为色度计对中间位置颜色的测量结果)

    Figure  8.  Changes in MB decolorization during the 9 h course of the photodegradation test, characterized by photographs

    (The inset shows the results of colorimeter measurement of the color at the middle position)

    图  9  PMHS/TBT-Quartz Sand-TiO2涂层的光催化降解MB性能

    Figure  9.  Photocatalytic degradation of the MB properties of the PMHS/TBT-Quartz Sand-TiO2 coating

    图  10  PMHS/TBT-Quartz Sand-TiO2涂层的光催化降解氮氧化合物性能

    Figure  10.  Photocatalytic degradation performance of PMHS/TBT-Quartz Sand-TiO2 coatings for nitrogen oxides

    图  11  每个磨损循环后的接触角滚动角变化,插图为第 10 次磨损后染色水滴在PMHS/TBT-Quartz Sand-TiO2涂层上的光学图片

    Figure  11.  Contact angle rolling angle change after each wear cycle, and the inset is the optical picture of the stained water droplets on the PMHS/TBT-Quartz Sand-TiO2 coating after the 10 th wear

    图  12  PMHS/TBT-Quartz Sand-TiO2涂层的耐紫外老化性能

    Figure  12.  The UV-aging resistance of the PMHS/TBT-Quartz Sand-TiO2 coating

    图  13  PMHS/TBT-Quartz Sand-TiO2涂层的抗硫酸盐侵蚀能力测试

    Figure  13.  Sulfate attack resistance test of PMHS/TBT-Quartz Sand-TiO2 coatings

    图  14  PMHS/TBT-Quartz Sand-TiO2涂层的抗冻融侵蚀能力测试

    Figure  14.  Sulfate attack resistance test of PMHS/TBT-Quartz Sand-TiO2 coatings

    图  15  PMHS/TBT- Quartz sand-TiO2光催化协同超疏水涂层模型

    Figure  15.  Model of PMHS/TBT- Quartz sand-TiO2 photocatalytic synergistic superhydrophobic coating

    表  1  砂浆配合比

    Table  1.   Mortar mix ratio /(kg·m−3)

    Water cement ratioCementSandWater
    0.464501350225
    下载: 导出CSV
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出版历程
  • 收稿日期:  2024-03-22
  • 修回日期:  2024-05-23
  • 录用日期:  2024-05-31
  • 网络出版日期:  2024-06-22

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