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2007 , Vol. 22 >Issue 5: 922 - 926

DOI: https://doi.org/10.3724/SP.J.1077.2007.00922

研究论文

M(M= Mg, Ca, Sr, Ba, Ni)Nb2O6的光催化性能的研究

  • 安惠中 ,
  • 王 聪 ,
  • 王天民 ,
  • 郝维昌
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  • (北京航空航天大学凝聚态物理与材料物理研究中心, 北京 100083)

收稿日期: 2006-09-18

  修回日期: 2006-11-22

  网络出版日期: 2007-09-20

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Photocatalytic Activity of M(M=Mg, Ca, Sr, Ba, Ni)Nb2O6

  • AN Hui-Zhong ,
  • WANG Cong ,
  • WANG Tian-Min ,
  • HAO Wei-Chang
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  • (Center of Condensed Matter and Materials Physics, School of Science, Beihang University, Beijing 100083, China)

Received date: 2006-09-18

  Revised date: 2006-11-22

  Online published: 2007-09-20

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摘要

应用固相烧结法制备了半导体光催化材料MgNb2O6, CaNb2O6, SrNb2O6, BaNb2O6, NiNb2O6粉体. 利用XRD、UV-Vis漫反射谱、扫描电镜对上述粉体晶体结构、光谱性质和形貌进行了分析. 在紫外光下对其降解罗丹明B(RhB)的光催化性能进行了评估. 结果表明, 碱土金属Sr、Ba对NiNb2O6中Ni的取代能很好地提高铌酸盐的光催化效果, 在10h紫外光照射下能分别将RhB的浓度降解到原来的21%和37%.

关键词： 铌酸盐; 光催化; 降解罗丹明B; 碱土金属

本文引用格式

安惠中 , 王 聪 , 王天民 , 郝维昌 . M(M= Mg, Ca, Sr, Ba, Ni)Nb2O6的光催化性能的研究[J]. 无机材料学报, 2007 , 22(5) : 922 -926 . DOI: 10.3724/SP.J.1077.2007.00922

Abstract

Powder samples, NiNb2O6, MgNb2O6, CaNb2O6, SrNb2O6, BaNb2O6, were prepared by solid state reaction. Crystal structure, optical and powder morphology of the samples were analyzed by XRD, UV-Vis diffuse reflectance spectra and SEM. The photocatalytic properties were investigated by degrading rhodamine B under UV irradiation. The substitution of alkaline-earth metals for Ni improves the photocatalytic activity of MNb2O6. After UV irradiation for 10h, the concentrations of RhB/SrNb2O6 suspension and RhB/BaNb2O6 suspension are degraded to 21% and 37%, respectively.

Key words： niobate; photocatalysis; rhodamine B degradation; alkaline-earth metals

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