Facile hydrothermal synthesis and photocatalytic activity of bismuth tungstate hierarchical hollow spheres with an ultrahigh surface area

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	Facile hydrothermal synthesis and photocatalytic activity of bismuth tungstate hierarchical hollow spheres with an ultrahigh surface area
	X. J. Dai; Y. S. Luo; W. D. Zhang; S. Y. Fu
	2010
发表期刊	Dalton Transactions
ISSN	1477-9226
卷号	39 期号:14 页码:3426-3432
摘要	Bismuth tungstate has attracted great attention as a new photocatalyst working under visible irradiation. In this paper, we demonstrate a facile hydrothermal route for controllable synthesis of novel Bi(2)WO(6) hierarchical hollow spheres with an ultrahigh specific surface area in the presence of poly(vinyl pyrrolidone) at a proper C(2)H(5)OH/CH(3)COOH/H(2)O volume ratio. The obtained products are systematically studied by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, Brunauer-Emmett-Teller (BET) and UV-vis absorption spectroscopy. It is shown that the Bi(2)WO(6) hollow spheres are constructed of numerous nanoplates while the nanoplates consist of a great deal of nanoparticles. UV-vis spectrum is used to estimate the band gap energy (about 2.90 eV) of the Bi(2)WO(6) hollow spheres. The ultrahigh BET specific surface area of ca. 45.0 m(2) g(-1) is displayed for the Bi(2)WO(6) hierarchical hollow spheres, which is much higher than that for all the previously reported Bi(2)WO(6) products. The Bi(2)WO(6) hierarchical hollow spheres are displayed to possess superior photocatalytic activity in the photodegradation of rhodamine B (RhB) under visible light irradiation over other morphological products.
部门归属	[dai, xiao-jun; luo, yong-song; zhang, wei-dong; fu, shao-yun] chinese acad sci, tech inst phys & chem, beijing 100190, peoples r china. [dai, xiao-jun; luo, yong-song] xinyang normal univ, dept phys & elect engn, xinyang 464000, peoples r china. [fu, shao-yun] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;luo, ys (reprint author), chinese acad sci, tech inst phys & chem, beijing 100190, peoples r china;ysluo@mail.ipc.ac.cn syfu@mail.ipc.ac.cn
关键词	Light-driven Photocatalysts Template-free Synthesis One-pot Synthesis Room-temperature Bi2wo6 Microspheres Route Nanostructures Nanoparticles Cu2o
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WOS记录号	WOS:000275927800015
引用统计	被引频次：174[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31064
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. J. Dai,Y. S. Luo,W. D. Zhang,et al. Facile hydrothermal synthesis and photocatalytic activity of bismuth tungstate hierarchical hollow spheres with an ultrahigh surface area[J]. Dalton Transactions,2010,39(14):3426-3432.
APA	X. J. Dai,Y. S. Luo,W. D. Zhang,&S. Y. Fu.(2010).Facile hydrothermal synthesis and photocatalytic activity of bismuth tungstate hierarchical hollow spheres with an ultrahigh surface area.Dalton Transactions,39(14),3426-3432.
MLA	X. J. Dai,et al."Facile hydrothermal synthesis and photocatalytic activity of bismuth tungstate hierarchical hollow spheres with an ultrahigh surface area".Dalton Transactions 39.14(2010):3426-3432.