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Title: Morphology modulated growth of bismuth tungsten oxide nanocrystals

Abstract

Two kinds of bismuth tungsten oxide nanocrystals were prepared by microwave hydrothermal method. The morphology modulation of nanocrystals synthesized with precursor suspension's pH varied from 0.25 (strong acid) to 10.05 (base) was studied. The 3D flower like aggregation of Bi{sub 2}WO{sub 6} nanoflakes was synthesized in acid precursor suspension and the nanooctahedron crystals of Bi{sub 3.84}W{sub 0.16}O{sub 6.24} were synthesized in alkalescent precursor. The dominant crystal is changed from Bi{sub 2}WO{sub 6} to Bi{sub 3.84}W{sub 0.16}O{sub 6.24} when the precursor suspension changes from acid to alkalescence. The growth mechanisms of Bi{sub 2}WO{sub 6} and Bi{sub 3.84}W{sub 0.16}O{sub 6.24} were attributed to the different solubility of WO{sub 4}{sup 2-} and [Bi{sub 2}O{sub 2}]{sup 2+} in precursor suspensions with various pH. For the decomposition of Rhodamine B (RhB) under visible light irradiation ({lambda}>400 nm), different morphology of Bi{sub 2}WO{sub 6} crystal samples obtained by microwavesolvothermal process showed different photocatalytic activity. - Graphical abstract: The morphology modulation of bismuth tungsten oxide nanocrystals synthesized by microwave hydrothermal method with precursor suspension's pH varied from 0.25 (strong acid) to 10.05 (base) was studied. The 3D flower like aggregation of Bi{sub 2}WO{sub 6} nanoflakes and nanooctahedron crystals of Bi{sub 3.84}W{sub 0.16}O{sub 6.24} were prepared. The growthmore » mechanisms of Bi{sub 2}WO{sub 6} and Bi{sub 3.84}W{sub 0.16}O{sub 6.24} were attributed to the different precipitation ability and solubility of H{sub 2}WO{sub 4} and Bi(OH){sub 3} in precursor suspensions with various pH. The photocatalytic evaluation, via the decomposition of Rhodamine B (RhB) under visible light irradiation ({lambda}>420 nm), reveals that nanocrystalline Bi{sub 2}WO{sub 6} samples obtained in different condition exhibit different photocatalytic activities which depend on pH value of the precursor suspensions.« less

Authors:
 [1];  [1];  [2]; ; ; ; ; ; ;  [1]
  1. State Key Lab of Crystal Materials, Shandong University, Jinan 250100 (China)
  2. Chemistry and Chemical Engineering College, Shandong University, Jinan 250100 (China)
Publication Date:
OSTI Identifier:
21212183
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 182; Journal Issue: 2; Other Information: DOI: 10.1016/j.jssc.2008.09.016; PII: S0022-4596(08)00509-4; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BISMUTH COMPOUNDS; CRYSTAL GROWTH; CRYSTALS; HYDROTHERMAL SYNTHESIS; IRRADIATION; MICROWAVE RADIATION; MORPHOLOGY; NANOSTRUCTURES; PH VALUE; PHOTOCATALYSIS; PRECIPITATION; SOLUBILITY; SUSPENSIONS; TUNGSTEN OXIDES

Citation Formats

Shushan, Yao, Wei, Jiyong, Chemistry and Chemical Engineering College, Shandong University, Jinan 250100, Huang Baibiao, Shengyu, Feng, Xiaoyang, Zhang, Xiaoyan, Qin, Peng, Wang, Zeyan, Wang, Qi, Zhang, Xiangyang, Jing, and Jie, Zhan. Morphology modulated growth of bismuth tungsten oxide nanocrystals. United States: N. p., 2009. Web.
Shushan, Yao, Wei, Jiyong, Chemistry and Chemical Engineering College, Shandong University, Jinan 250100, Huang Baibiao, Shengyu, Feng, Xiaoyang, Zhang, Xiaoyan, Qin, Peng, Wang, Zeyan, Wang, Qi, Zhang, Xiangyang, Jing, & Jie, Zhan. Morphology modulated growth of bismuth tungsten oxide nanocrystals. United States.
Shushan, Yao, Wei, Jiyong, Chemistry and Chemical Engineering College, Shandong University, Jinan 250100, Huang Baibiao, Shengyu, Feng, Xiaoyang, Zhang, Xiaoyan, Qin, Peng, Wang, Zeyan, Wang, Qi, Zhang, Xiangyang, Jing, and Jie, Zhan. 2009. "Morphology modulated growth of bismuth tungsten oxide nanocrystals". United States.
@article{osti_21212183,
title = {Morphology modulated growth of bismuth tungsten oxide nanocrystals},
author = {Shushan, Yao and Wei, Jiyong and Chemistry and Chemical Engineering College, Shandong University, Jinan 250100 and Huang Baibiao and Shengyu, Feng and Xiaoyang, Zhang and Xiaoyan, Qin and Peng, Wang and Zeyan, Wang and Qi, Zhang and Xiangyang, Jing and Jie, Zhan},
abstractNote = {Two kinds of bismuth tungsten oxide nanocrystals were prepared by microwave hydrothermal method. The morphology modulation of nanocrystals synthesized with precursor suspension's pH varied from 0.25 (strong acid) to 10.05 (base) was studied. The 3D flower like aggregation of Bi{sub 2}WO{sub 6} nanoflakes was synthesized in acid precursor suspension and the nanooctahedron crystals of Bi{sub 3.84}W{sub 0.16}O{sub 6.24} were synthesized in alkalescent precursor. The dominant crystal is changed from Bi{sub 2}WO{sub 6} to Bi{sub 3.84}W{sub 0.16}O{sub 6.24} when the precursor suspension changes from acid to alkalescence. The growth mechanisms of Bi{sub 2}WO{sub 6} and Bi{sub 3.84}W{sub 0.16}O{sub 6.24} were attributed to the different solubility of WO{sub 4}{sup 2-} and [Bi{sub 2}O{sub 2}]{sup 2+} in precursor suspensions with various pH. For the decomposition of Rhodamine B (RhB) under visible light irradiation ({lambda}>400 nm), different morphology of Bi{sub 2}WO{sub 6} crystal samples obtained by microwavesolvothermal process showed different photocatalytic activity. - Graphical abstract: The morphology modulation of bismuth tungsten oxide nanocrystals synthesized by microwave hydrothermal method with precursor suspension's pH varied from 0.25 (strong acid) to 10.05 (base) was studied. The 3D flower like aggregation of Bi{sub 2}WO{sub 6} nanoflakes and nanooctahedron crystals of Bi{sub 3.84}W{sub 0.16}O{sub 6.24} were prepared. The growth mechanisms of Bi{sub 2}WO{sub 6} and Bi{sub 3.84}W{sub 0.16}O{sub 6.24} were attributed to the different precipitation ability and solubility of H{sub 2}WO{sub 4} and Bi(OH){sub 3} in precursor suspensions with various pH. The photocatalytic evaluation, via the decomposition of Rhodamine B (RhB) under visible light irradiation ({lambda}>420 nm), reveals that nanocrystalline Bi{sub 2}WO{sub 6} samples obtained in different condition exhibit different photocatalytic activities which depend on pH value of the precursor suspensions.},
doi = {},
url = {https://www.osti.gov/biblio/21212183}, journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = 2,
volume = 182,
place = {United States},
year = {Sun Feb 15 00:00:00 EST 2009},
month = {Sun Feb 15 00:00:00 EST 2009}
}