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	Synthesis of hexagonal BaTa2O6 nanorods and influence of defects on the photocatalytic activity
	Xu, Tongguang ; Zhao, Xu ; Zhu, Yongfa
	2010-05-06 ; 2010-05-06
关键词	BARIUM-TITANATE TANTALATE PHOTOCATALYSTS HYDROTHERMAL SYNTHESIS STRONTIUM-TITANATE CDSE NANOCRYSTALS WATER TIO2 DECOMPOSITION DEGRADATION FILMS Chemistry, Physical
中文摘要	Hexagonal barium tantalate (BaTa2O6) nanorods were synthesized by a hydrothermal method based on the reaction of concentrated Ba(OH)(2) solution and Ta2O5. BaTa2O6 samples show a uniform cylindrical structure with diameters of 5-30 nm and the lengths of 50-200 nm. The formation of BaTa2O6 nanorods follows a dissolution-recrystallization mechanism and is governed by hydrothermal temperature and time. BaTa2O6 nanorod samples prepared at 270 degrees C for 72 h have exhibited the highest photocatalytic activity in the degradation of Rhodamine B (RhB) in aqueous solution under UV radiation. Hydrogen-related defects were detected in BaTa2O6 nanorods, which originate from the oxygen octahedron. The number of defects was dependent on the hydrothermal temperature, and the photocatalytic activities of BaTa2O6 nanorods increase with the decrease of defect amounts. On the basis of the experiment results, the difference in photocatalytic activities for samples is mainly caused by lattice defects, which can act as inactivation centers.
语种	英语 ; 英语
出版者	AMER CHEMICAL SOC ; WASHINGTON ; 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/12209]
专题	清华大学
推荐引用方式 GB/T 7714	Xu, Tongguang,Zhao, Xu,Zhu, Yongfa. Synthesis of hexagonal BaTa2O6 nanorods and influence of defects on the photocatalytic activity[J],2010, 2010.
APA	Xu, Tongguang,Zhao, Xu,&Zhu, Yongfa.(2010).Synthesis of hexagonal BaTa2O6 nanorods and influence of defects on the photocatalytic activity..
MLA	Xu, Tongguang,et al."Synthesis of hexagonal BaTa2O6 nanorods and influence of defects on the photocatalytic activity".(2010).

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