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首页> 外文期刊>Building and Environment >The activity of acrylic-siliconano-TiO_2 films for the visible-light degradation of formaldehyde and NO_2
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The activity of acrylic-siliconano-TiO_2 films for the visible-light degradation of formaldehyde and NO_2

机译：丙烯酸硅/纳米TiO_2薄膜对可见光降解甲醛和NO_2的活性

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摘要

Through a novel green and low-cost emulsion blend method, acrylic-siliconano-TiO_2 films (ASTF) were prepared showing a broad absorption band in the visible light region and could be used for the pho-todegradation of indoor gaseous pollutants under visible light irradiation. Compared with acrylic-silicon films, the photodegradation rate of ASTF with TiO_2 content of 1% (w/v) increased by almost twice for both gaseous formaldehyde (from 28% to 76.7% at the initial concentration of 0.8 mg/m3) and NO_2 (from 20% to 68% at the initial concentration of 3.7 mg/m~3) under visible light irradiation for 24 h and 50 h, respectively. The binary gas degradation confirmed the higher affinity of NO_2 for ASTF. In addition, ASTF with Fe~Ⅲ ion doping (<100 mg/L) showed even higher photocatalytic activity with maximum degradation rate of 83.4% for formaldehyde under visible light irradiation for 24 h. ASTF, as a kind of eco-friendly coating material, could be used easily in domestic buildings for our daily life.
机译：通过一种新颖的绿色低成本乳液共混方法，制备了在可见光区域具有较宽吸收带的丙烯酸-硅/纳米TiO_2薄膜（ASTF），可用于可见光下室内气态污染物的光降解。光照射。与丙烯酸硅薄膜相比，气态甲醛和NO_2的TiO_2含量为1％（w / v）的ASTF的光降解率几乎提高了两倍（从28％增至76.7％）。 （初始浓度为3.7 mg / m〜3时从20％增至68％）分别在可见光照射下持续24 h和50 h。二元气体降解证实了NO_2对ASTF的亲和力更高。此外，掺有Fe〜Ⅲ离子（<100 mg / L）的ASTF在可见光照射24 h后表现出更高的光催化活性，甲醛的最大降解率为83.4％。 ASTF作为一种环保型涂料，可以很容易地在日常生活中用于家庭建筑。

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  • 来源
    《Building and Environment》 |2013年第7期|215-221|共7页
  • 作者

    Gang Xiao; Anna Huang; Haijia Su; Tianwei Tan;

  • 作者单位

    State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China;

    State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China;

    State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China;

    State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Acrylic-siliconano-TiO_2 films; Formaldehyde; Nitrogen oxides; Visible light; Photodegradation;

    机译：丙烯酸有机硅/纳米TiO2薄膜;甲醛;氮氧化物;可见光;光降解;

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