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五氧化二钽纳米柱的水热合成和光催化性能

李菊霞 ,  戴卫理 ,  闫俊青 ,  武光军 ,  李兰冬 ,  关乃佳

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引用本文: 李菊霞, 戴卫理, 闫俊青, 武光军, 李兰冬, 关乃佳. 五氧化二钽纳米柱的水热合成和光催化性能[J]. 催化学报, 2015, 36(3): 432-438. doi: 10.1016/S1872-2067(14)60215-1 shu
Citation:  Juxia Li, Weili Dai, Junqing Yan, Guangjun Wu, Landong Li, Naijia Guan. Hydrothermal synthesis and photocatalytic properties of tantalum pentoxide nanorods[J]. Chinese Journal of Catalysis, 2015, 36(3): 432-438. doi: 10.1016/S1872-2067(14)60215-1 shu

五氧化二钽纳米柱的水热合成和光催化性能

    通讯作者: 戴卫理, 关乃佳; 戴卫理, 关乃佳
  • 基金项目:

    天津化学化工协同创新中心. 

摘要: 以聚乙烯醇(PEG)为结构导向剂, 利用水热法合成了形貌可控的Ta2O5纳米柱.采用X射线衍射、扫描电镜、透射电镜、漫反射紫外-可见光谱和光致发光光谱对所制备样品进行了表征.考察了结晶时间和Ta2O5/Sr(OH)2摩尔比等合成参数对样品形貌的影响, 并在此基础上对Ta2O5纳米粒可能的生长机理进行了推测.结果表明, 在PEG和Sr(OH)2存在条件下可以合成形貌可控的Ta2O5纳米柱.研究了紫外光下Ta2O5纳米柱降解罗丹明B的光催化性能, 发现Ta2O5的形貌对光催化性能有很大影响, Ta2O5纳米柱的光催化性能与其长度和直径比成线性关系.催化降解反应的表观速率常数最高可达0.156 min-1, 且经多次循环使用后, 样品仍然保持较高的催化性能.

English

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  • 发布日期:  2015-03-20
  • 收稿日期:  2014-07-24
  • 网络出版日期:  2014-08-29
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