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Title: Flower-like and hollow sphere-like WO{sub 3} porous nanostructures: Selective synthesis and their photocatalysis property

Abstract

Graphical abstract: -- Abstract: Nanoflake-based flower-like and hollow microsphere-like hydrated tungsten oxide architectures were selectively synthesized by acidic precipitation of sodium tungstate solution at mild temperature. Several techniques, such as X-ray diffraction, scanning electron microscopy, thermogravimetric-differential thermalgravimetric analysis, transmission electron microscopy, and Brunauer–Emmett–Teller N{sub 2} adsorption–desorption analyses, were used to characterize the structure and morphology of the products. The experimental results show that the nanoflake-based flower-like and hollow sphere-like WO{sub 3}·H{sub 2}O architectures can be obtained by changing the concentration of sodium tungstate solution. The possible formation process based on the aggregation–recrystallization mechanism is proposed. The corresponding tungsten oxide three-dimensional architectures were obtained after calcination at 450 °C. Finally, the obtained WO{sub 3} three-dimensional architectures were used as photocatalyst in the experiments. Compared with WO{sub 3} microflowers, the as-prepared WO{sub 3} hollow microspheres exhibit superior photocatalytic property on photocatalytic decomposition of Rhodamine B due to their hollow porous hierarchical structures.

Authors:
 [1];  [1];  [1]; ;  [1];  [2]
  1. College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000 (China)
  2. Research Center for Biomimetic Functional Materials and Sensing Devices, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031 (China)
Publication Date:
OSTI Identifier:
22215556
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 11; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; CALCINATION; CRYSTAL GROWTH; NANOSTRUCTURES; PHOTOCATALYSIS; POROUS MATERIALS; PRECIPITATION; SCANNING ELECTRON MICROSCOPY; SEMICONDUCTOR MATERIALS; SYNTHESIS; THERMAL GRAVIMETRIC ANALYSIS; TRANSMISSION ELECTRON MICROSCOPY; TUNGSTATES; TUNGSTEN OXIDES; X-RAY DIFFRACTION

Citation Formats

Huang, Jiarui, E-mail: jrhuang@mail.anhu.edu.cn, Xu, Xiaojuan, Gu, Cuiping, E-mail: cpgu2008@mail.anhu.edu.cn, Fu, Gujun, Wang, Weizhi, and Liu, Jinhuai. Flower-like and hollow sphere-like WO{sub 3} porous nanostructures: Selective synthesis and their photocatalysis property. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.08.009.
Huang, Jiarui, E-mail: jrhuang@mail.anhu.edu.cn, Xu, Xiaojuan, Gu, Cuiping, E-mail: cpgu2008@mail.anhu.edu.cn, Fu, Gujun, Wang, Weizhi, & Liu, Jinhuai. Flower-like and hollow sphere-like WO{sub 3} porous nanostructures: Selective synthesis and their photocatalysis property. United States. doi:10.1016/J.MATERRESBULL.2012.08.009.
Huang, Jiarui, E-mail: jrhuang@mail.anhu.edu.cn, Xu, Xiaojuan, Gu, Cuiping, E-mail: cpgu2008@mail.anhu.edu.cn, Fu, Gujun, Wang, Weizhi, and Liu, Jinhuai. Thu . "Flower-like and hollow sphere-like WO{sub 3} porous nanostructures: Selective synthesis and their photocatalysis property". United States. doi:10.1016/J.MATERRESBULL.2012.08.009.
@article{osti_22215556,
title = {Flower-like and hollow sphere-like WO{sub 3} porous nanostructures: Selective synthesis and their photocatalysis property},
author = {Huang, Jiarui, E-mail: jrhuang@mail.anhu.edu.cn and Xu, Xiaojuan and Gu, Cuiping, E-mail: cpgu2008@mail.anhu.edu.cn and Fu, Gujun and Wang, Weizhi and Liu, Jinhuai},
abstractNote = {Graphical abstract: -- Abstract: Nanoflake-based flower-like and hollow microsphere-like hydrated tungsten oxide architectures were selectively synthesized by acidic precipitation of sodium tungstate solution at mild temperature. Several techniques, such as X-ray diffraction, scanning electron microscopy, thermogravimetric-differential thermalgravimetric analysis, transmission electron microscopy, and Brunauer–Emmett–Teller N{sub 2} adsorption–desorption analyses, were used to characterize the structure and morphology of the products. The experimental results show that the nanoflake-based flower-like and hollow sphere-like WO{sub 3}·H{sub 2}O architectures can be obtained by changing the concentration of sodium tungstate solution. The possible formation process based on the aggregation–recrystallization mechanism is proposed. The corresponding tungsten oxide three-dimensional architectures were obtained after calcination at 450 °C. Finally, the obtained WO{sub 3} three-dimensional architectures were used as photocatalyst in the experiments. Compared with WO{sub 3} microflowers, the as-prepared WO{sub 3} hollow microspheres exhibit superior photocatalytic property on photocatalytic decomposition of Rhodamine B due to their hollow porous hierarchical structures.},
doi = {10.1016/J.MATERRESBULL.2012.08.009},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 11,
volume = 47,
place = {United States},
year = {2012},
month = {11}
}