Hierarchical TiO2 photonic crystal spheres prepared by spray drying for highly efficient photocatalysis

Qiang Yang; Mingzhu Li; Jian Liu; Weizhi Shen; Changqing Ye; Xiaodi Shi; Lei Jiang; Yanlin Song

doi:10.1039/C2TA00060A

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Hierarchical TiO₂ photonic crystal spheres prepared by spray drying for highly efficient photocatalysis†

Qiang Yang,^a Mingzhu Li,*^a Jian Liu,^a Weizhi Shen,^a Changqing Ye,^a Xiaodi Shi,^a Lei Jiang^a and Yanlin Song*^a

Author affiliations

* Corresponding authors

^a Beijing National Laboratory for Molecular Sciences (BNLMS), Key Lab of Organic Solids, Laboratory of New Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
E-mail: ylsong@iccas.ac.cn, mingzhu@iccas.ac.cn

Abstract

Hierarchical inverse opal titania photonic crystal (i-TiO₂-PC) spheres have been prepared via spray drying and show highly photocatalytic capability in pollutant elimination. The hierarchical i-TiO₂-PC spheres integrated a Mie scattering effect of micro-scale spheres and slow photon effect of photonic crystals with a wavelength-scale period structure, which gave birth to remarkable photocatalytic performance. In the photodegradation of methylene blue under irradiation of UV light, the rate constant of the i-TiO₂-PC spheres was 1.66 times, on average, higher than that of Degussa P25.

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Article information

DOI: https://doi.org/10.1039/C2TA00060A
Article type: Paper
Submitted: 24 Aug 2012
Accepted: 01 Oct 2012
First published: 02 Oct 2012

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J. Mater. Chem. A, 2013,1, 541-547

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Hierarchical TiO₂ photonic crystal spheres prepared by spray drying for highly efficient photocatalysis

Q. Yang, M. Li, J. Liu, W. Shen, C. Ye, X. Shi, L. Jiang and Y. Song, J. Mater. Chem. A, 2013, 1, 541 DOI: 10.1039/C2TA00060A

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Journal of Materials Chemistry A