| M(M= Mg, Ca, Sr, Ba, Ni)Nb2O6的光催化性能的研究 |
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| 引用本文： | 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 |
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| 作者姓名： | 安惠中 王聪 王天民 郝维昌 |
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| 作者单位： | 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 |
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| 基金项目： | 北大工程院研究基金;国家自然科学基金;教育部跨世纪优秀人才培养计划 |
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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%.
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| 关 键 词： | 铌酸盐 光催化 降解罗丹明B 碱土金属 |
| 文章编号： | 1000-324X（2007）05-0922-05 |
| 收稿时间： | 2006-09-18 |
| 修稿时间： | 2006-09-18 |
Photocatalytic Activity of M(M=Mg, Ca, Sr, Ba, Ni)Nb2O6 |
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| AN Hui-Zhong,WANG Cong,WANG Tian-Min,HAO Wei-Chang. Photocatalytic Activity of M(M=Mg, Ca, Sr, Ba, Ni)Nb2O6[J]. Journal of Inorganic Materials, 2007, 22(5): 922-926. DOI: 10.3724/SP.J.1077.2007.00922 |
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| Authors: | AN Hui-Zhong WANG Cong WANG Tian-Min HAO Wei-Chang |
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| Affiliation: | Center of Condensed Matter and Materials Physics, School of Science, Beihang University, Beijing 100083 China |
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| 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 axe degraded to 21% and 37%, respectively. |
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| Keywords: | niobate photocatalysis rhodamine B degradation alkaline-earth metals |
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