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首页> 外文期刊>Journal of Hazardous Materials >Improvement mechanism of NO photocatalytic degradation performance of self-cleaning synergistic photocatalytic coating under high humidity
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Improvement mechanism of NO photocatalytic degradation performance of self-cleaning synergistic photocatalytic coating under high humidity

机译：高湿度下自清洁协同光催化涂层无光催化降解性能的改进机理

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摘要

Photocatalytic coating has been widely studied as a promising material to remove air pollutants. However, the effectiveness and long-term effect of photocatalysis in high relative humidity environment is still the main challenge in this field. In this study, a fluorinated WO3-TiO2 nanorods/SiO2 epoxy photocatalytic superamphiphobic coating (FTSE coating) was prepared using a simple spraying method. The micromorphology and chemical composition of FTSE coating was characterized by SEM, EDS, FT-IR, XPS and TGA techniques. The advanced contact angle and hysteresis angle test show that the FTSE coating had excellent superamphiphobicity. The mechanical abrasions, corrosion resistance and UV aging tests show that the FTSE coating exhibited reasonable durability. Besides, the NO degradation efficiency of hydrophilic and superamphiphobic coatings with contact angles of 20.19 degrees, 87.74 degrees, 162.93 degrees and 164.47 degrees was tested in different humidity environment. The results showed that the superamphiphobic coating exhibited more superior photocatalytic degradation efficiency (84.02%) than the hydrophilic coating (51.38%) at a high relative humidity (RH=98%). Finally, FTSE coating exhibited prominent photocatalytic stability and the synergistic effect of photocatalysis and self-cleaning. After 30 d outdoor weathering test, the NO degradation efficiency decreased by 13.07% and recovered to the original level after flushing. The improvement mechanism of NO degradation performance was proposed based on the characteristics of superamphiphobic surface.
机译：光催化涂层已被广泛研究作为一种有希望的材料，以除去空气污染物。然而，高相对湿度环境中光催化的有效性和长期影响仍是该领域的主要挑战。在该研究中，使用简单的喷涂方法制备氟化WO3-TiO2纳米棒/ SiO2环氧光催化超人物涂层（FTSE涂层）。 SEM，EDS，FT-IR，XPS和TGA技术的特征在于FTSE涂层的微晶和化学成分。先进的接触角和滞后角测试表明，富时涂层具有优异的超级超人物。机械磨料，耐腐蚀性和紫外老化试验表明，富时涂层表现出合理的耐久性。此外，在不同湿度环境下测试了20.19度，87.74度，162.93度和164.47度的接触角的亲水和超人斑涂层的降解效率。结果表明，超人参涂层比高相对湿度（RH = 98％）的亲水涂层（51.38％）表现出更优异的光催化降解效率（84.02％）。最后，FTSE涂层表现出显着的光催化稳定性和光催化和自清洁的协同效应。 30 d户外风化试验后，无降低效率下降13.07％并在冲洗后恢复到原始水平。基于超樟脑表面的特征，提出了没有降解性能的改善机制。

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  • 来源
    《Journal of Hazardous Materials》 |2021年第15期|126337.1-126337.14|共14页
  • 作者

    Liu Guanyu; Xia Huiyun; Zhang Wenshuo; Song Lifang; Chen Qiwei; Niu Yanhui;

  • 作者单位

    Changan Univ Engn Res Ctr Transportat Mat Sch Mat Sci & Engn Minist Educ Xian 710064 Peoples R China;

    Changan Univ Engn Res Ctr Transportat Mat Sch Mat Sci & Engn Minist Educ Xian 710064 Peoples R China;

    Changan Univ Engn Res Ctr Transportat Mat Sch Mat Sci & Engn Minist Educ Xian 710064 Peoples R China;

    Changan Univ Engn Res Ctr Transportat Mat Sch Mat Sci & Engn Minist Educ Xian 710064 Peoples R China;

    Changan Univ Engn Res Ctr Transportat Mat Sch Mat Sci & Engn Minist Educ Xian 710064 Peoples R China;

    Changan Univ Engn Res Ctr Transportat Mat Sch Mat Sci & Engn Minist Educ Xian 710064 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Photocatalytic; Superamphiphobic; NO degradation; High relative humidity; Self-cleaning;

    机译：光催化;超人物;没有降级;高相对湿度;自清洁;

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