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Synthetic bismuth silicate nanostructures: Photocatalysts grown from silica aerogels precursors

Published online by Cambridge University Press:  24 April 2013

Wei Wei ,
Jimin Xie ,
Suci Meng ,
Xiaomeng Lü ,
Zaoxue Yan ,
Jianjun Zhu  and
Henglv Cui
Wei Wei
Affiliation:
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
Jimin Xie*
Affiliation:
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
Suci Meng
Affiliation:
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China; and Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
Xiaomeng Lü
Affiliation:
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
Zaoxue Yan
Affiliation:
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
Jianjun Zhu
Affiliation:
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
Henglv Cui
Affiliation:
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Bismuth silicate with two morphologies (nanoflowers/nanoplates) was successfully fabricated with silica aerogels via a hydrothermal method in polyvinylpyrrolidone (PVP)-mediated processes for the first time. The obtained nanomaterials were characterized using x-ray powder diffraction, scanning electron microscopy, the Brunauer–Emmett–Teller (BET) surface area analysis, and UV-vis diffuse reflectance spectroscopy. It was found that the concentration of PVP plays an important role in the formation of the hierarchical nanoflowers. The formation mechanism for this novel morphology was proposed on the basis of experimental results. Moreover, the photocatalytic performances of Bi2SiO5 nanoflowers/nanoplates were also investigated. The results revealed that Bi2SiO5 nanoflowers exhibited higher activity than Bi2SiO5 nanoplates due to its suitable morphology, higher BET surface area.

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Reviews
Information
Journal of Materials Research , Volume 28 , Issue 13: FOCUS ISSUE: Frontiers in Thin-Film Epitaxy and Nanostructured Materials , 14 July 2013 , pp. 1658 - 1668
Copyright
Copyright © Materials Research Society 2013 

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References

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