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首页> 外文期刊>RSC Advances >Ag2O-decorated electrospun BiVO4 nanofibers with enhanced photocatalytic performance
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Ag2O-decorated electrospun BiVO4 nanofibers with enhanced photocatalytic performance

机译：Ag2O装饰的Electromet Bivo4纳米纤维，具有增强的光催化性能

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摘要

Semiconductor photocatalysts are emerging as tools for pollutant degradation in industrial wastewater, air purification, antibacterial applications, etc. due to their use of visible light, which is abundant in sunlight. Here, we report a new type of p-n junction Ag2O/BiVO4 heterogeneous nanostructured photocatalyst with enhanced photocatalytic performance. P-type Ag2O nanoparticles were in situ reduced and assembled on the surface of electrospun BiVO4 nanofibers using ultraviolet (UV) irradiation; this process hindered the recombination of localized photogenerated electron-hole pairs, and hence resulted in the enhanced photocatalytic activity of the BiVO4/Ag2O nanocomposites. The photocatalytic activities of the obtained BiVO4 and BiVO4/Ag2O nanocomposites were assessed by measuring the degradation of rhodamine B (RhB) under visible light. The 10 wt% Ag2O/BiVO4 sample yielded the optimum degradation of RhB (98.47%), much higher than that yielded by pure BiVO4 nanofibers (64.67%). No obvious change in the XRD pattern of an Ag2O/BiVO4 sample occurred as a result of its use in the photocatalytic reaction, indicating its excellent stability. The high photocatalytic performance observed was attributed to the large surface-to-volume ratio of the essentially one-dimensional electrospun BiVO4 nanofibers and to the in situ growth of p-type Ag2O on the surface of the n-type BiVO4 nanofibers.
机译：由于它们使用在阳光下丰富，因此，半导体光催化剂正在作为污染物降解的工具，空气净化，抗菌应用等。在这里，我们报告了一种新型的P-N结Ag2O / Bivo4非均相纳米结构光催化剂，具有增强的光催化性能。 P型Ag2O纳米颗粒原位使用紫外（UV）照射在Electrom ow Bivo4纳米纤维表面上组装;该方法阻碍了局部光催化的电子 - 空穴对的重组，因此导致BIVO4 / Ag2O纳米复合材料的增强的光催化活性。通过测量可见光下的罗丹明B（RHB）的降解来评估所得BIVO4和BIVO4 / AG2O纳米复合材料的光催化活性。 10wt％Ag2O / Bivo4样品产生RHB（98.47％）的最佳降解，远高于纯BIVO4纳米纤维产生的（64.67％）。由于其在光催化反应中使用，因此发生了Ag2O / Bivo4样品的XRD模式的明显变化，表明其优异的稳定性。观察到的高光催化性能归因于基本上一维的ElectromeS BIVO4纳米纤维的大于表面对体积比，并在N型BiVO4纳米纤维表面上的p型Ag2O的原位生长。

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  • 来源
    《RSC Advances》 |2020年第10期|共7页
  • 作者

    Ren Junpeng; Zhu Yongyong;

  • 作者单位

    Naval Univ Engn Coll Weap Engn Wuhan 430033 Peoples R China;

    Naval Univ Engn Coll Weap Engn Wuhan 430033 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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