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首页> 外文期刊>RSC Advances >Enhanced visible-active photochromism of a polyoxometalates/TiO2 composite film by combining Bi2O3 nanoparticles
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Enhanced visible-active photochromism of a polyoxometalates/TiO2 composite film by combining Bi2O3 nanoparticles

机译：通过组合Bi2O3纳米颗粒增强多氧化硅酸盐/ TiO2复合膜的可见热光学变色

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摘要

A novel photochromic hybrid film was successfully synthesized by introducing Bi2O3 into a phosphomolybdic acid (PMoA)/TiO2 system as a visible light sensitizer. The influence of Bi2O3 addition on microstructure and photochromic properties was studied via transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FT-IR), ultraviolet-visible spectra (UV-vis) and X-ray photoelectron spectroscopy (XPS). The results revealed that the Keggin geometry of PMoA and basic structure of Bi2O3 were preserved in the obtained film, and the interaction between PMoA and TiO2 was strengthened after combining Bi2O3. Upon visible light irradiation, the composite films changed from colorless to blue and showed reversible photochromism in the presence of oxygen. Moreover, the photochromic performance of the Bi2O3/PMoA/TiO2 film was better than that of PMoA/TiO2 film. The amount of PMoA participating in the photo-reductive reaction increased after adding Bi2O3 into the PMoA/TiO2 composite, which resulted in photochromic efficiencies enhancing.
机译：通过将Bi 2 O 3引入磷钼族酸（PMOA）/ TiO2系统作为可见光敏化剂，成功地合成了一种新颖的光致变色杂交膜。通过透射电子显微镜（TEM），傅里叶变换红外光谱（FT-IR），紫外 - 可见光谱（UV-VIS），紫外线可见光光谱和X射线光电子谱（XPS）研究了Bi2O3对微观结构和光致变色性能的影响。结果表明，在所得薄膜中保留了PMOA和Bi2O3的基本结构的Keggin几何形状，并在组合Bi2O3结合后加强PMOA和TiO 2之间的相互作用。在可见光照射时，复合薄膜从无色到蓝色变为蓝色，并在氧气存在下显示可逆的光致变色。此外，Bi2O3 / PMOA / TiO2薄膜的光致变色性能优于PMOA / TiO2薄膜。在将Bi2O3添加到PMOA / TiO 2复合物中，参与光学还原反应的PMOA的量增加，导致光致变色效率增强。

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  • 来源
    《RSC Advances》 |2015年第61期|共6页
  • 作者

    Wang Xiansheng; Sun Yan; Liu Changcheng; Feng Wei; Zou Donglei;

  • 作者单位

    Jilin Univ Key Lab Groundwater Resources &

    Environm Minist Educ Changchun 130021 Peoples R China;

    Jilin Univ Key Lab Groundwater Resources &

    Environm Minist Educ Changchun 130021 Peoples R China;

    Air Force Serv Coll Dept Aviat Oil &

    Mat Xuzhou 221000 Jiangsu Peoples R China;

    Jilin Univ Key Lab Groundwater Resources &

    Environm Minist Educ Changchun 130021 Peoples R China;

    Jilin Univ Key Lab Groundwater Resources &

    Environm Minist Educ Changchun 130021 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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