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Template-free fabrication of porous zinc oxide hollow spheres and their enhanced photocatalytic performance

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Abstract

Porous zinc oxide (ZnO) hollow spheres have been fabricated by calcination of a precursor complex in a furnace. The precursor was precipitated in a chemical solution at 80 °C. The field-emission scanning electron microscope and transmission electron microscope reveal the porous and hollow structure of the samples. The spherical hollow precursor is self-assembled in the solution under the coordination effect of citrate ions and the Kirkendall effect working together. The precursors can be converted to pure ZnO crystals by heating in a furnace above 300 °C. The Brunauer–Emmett–Teller (BET) specific surface area of this sample is 95.4 m2/g. The photocatalytic degradation of methyl blue solution test shows the ZnO hollow spheres have superior photocatalytic activity.

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Acknowledgment

This work was financial supported by the Education Department of Guangxi Province (200708MS130) and Guilin University of Technology.

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Authors and Affiliations

  1. Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, Guilin, Guangxi, 541004, People’s Republic of China

    Ming Wang, Xueli Cao & Linjiang Wang

  2. Department of Materials and Chemical Engineering, Guilin University of Technology, Guilin, Guangxi, 541004, People’s Republic of China

    Ming Wang & Linjiang Wang

  3. Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui, 230031, People’s Republic of China

    Lide Zhang

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  1. Ming Wang
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  2. Xueli Cao
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Correspondence to Ming Wang.

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Wang, M., Cao, X., Wang, L. et al. Template-free fabrication of porous zinc oxide hollow spheres and their enhanced photocatalytic performance. J Porous Mater 17, 79–84 (2010). https://doi.org/10.1007/s10934-009-9266-7

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  • DOI: https://doi.org/10.1007/s10934-009-9266-7

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