异质结构钒酸铋/氧化铋可见光催化材料的制备及性能研究
DOI:
作者:
作者单位:

北华大学 材料科学与工程学院(分析测试中心)

作者简介:

通讯作者:

中图分类号:

O643.32

基金项目:


Preparation and properties of hetero structure bismuth vanadate / bismuth oxide visible light photocatalytic materials
Author:
Affiliation:

College of Materials Science and Engineering(Analysis and Test Center), Beihua University

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    可见光催化材料在降解有机物污染物方面有高性能,但大部分半导体光量子效率较低,光催化活性较差。为此,制备了一种新的异质结构钒酸铋/氧化铋可见光催化材料,并对其性能进行测试。制成氧化铋和钒酸铋,在此基础上制备钒酸铋-氧化铋复合光催化材料。分析制备材料表征分析方法,通过观测钒酸铋氧化铋光催化材料降解罗丹明B溶液的效果对其光催化性能进行测试。对可见光催化材料进行XDR分析、SEM分析、紫外-可见漫反射吸收光谱分析和荧光光谱分析,对制备可见光催化材料降解性能和稳定性进行检测。结果发现钒氧比为1.3时制备样本性能到达峰值,当钒氧比继续升高至1.4时,性能反而降低;因此,钒氧比性能最优时,降解率高达92%,能够大大降低罗丹明B溶液的浓度,且有很高的降解速度;重复使用制备样本后其光催化性能基本没有发生改变,对光照反应后制备样本及纯钒酸铋样本进行XRD分析,发现无新衍射峰值出现。说明此时制备样本降解性能较强,稳定性较高。

    Abstract:

    Visible-light photocatalytic materials have high performance in the degradation of organic pollutants, but most semiconductors have low quantum efficiency and poor photocatalytic activity. A new heterostructure bismuth vanadium oxide / bismuth oxide visible light photocatalyst was prepared and its properties were tested. Bismuth oxide and bismuth vanadate were prepared on this basis, and bismuth bismuth vanadate composite photocatalyst was prepared. The photocatalytic performance of the bismuth vanadium bismuth oxide photocatalyst degradation of Luo Danming B solution was measured by analyzing the characterization and analysis method of the prepared materials. XDR analysis, SEM analysis, UV visible diffuse reflectance absorption spectrum analysis and fluorescence spectrum analysis were used to detect the degradation performance and stability of visible photocatalytic materials. The results showed that when the ratio of vanadium and oxygen was 1.3, the performance of the sample reached the peak. When the vanadium oxygen ratio continued to rise to 1.4, the performance decreased. Therefore, when the vanadium and oxygen ratio was best, the degradation rate was up to 92%, which could greatly reduce the concentration of rhodamine B solution and have a high degradation rate. XRD analysis showed that no new diffraction peak appeared after irradiation. It shows that the prepared sample has strong degradation performance and high stability.

    参考文献
    相似文献
    引证文献
引用本文

张胜渠. 异质结构钒酸铋/氧化铋可见光催化材料的制备及性能研究[J]. 科学技术与工程, 2019, 19(1): .
Zhang shengqu. Preparation and properties of hetero structure bismuth vanadate / bismuth oxide visible light photocatalytic materials[J]. Science Technology and Engineering,2019,19(1).

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2018-08-15
  • 最后修改日期:2018-10-25
  • 录用日期:2018-10-25
  • 在线发布日期: 2019-01-15
  • 出版日期:
×
律回春渐,新元肇启|《科学技术与工程》编辑部恭祝新岁!
亟待确认版面费归属稿件,敬请作者关注