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Synthesis of mesoporous core-shell TiO2 microstructures with coexposed {001}/{101} facets: enhanced intrinsic photocatalytic performance

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Abstract

TiO2 microstructures were synthesized via a facile one-step route for enhanced intrinsic photocatalytic performance. The prepared TiO2 microstructures are featured by both mesoporous core-shell structures and coexposed {001}/{101} facets. Their intrinsic photocatalytic performance were remarkably enhanced due to their high specific surface area, coexposed {001}/{101} facets, and promoted separation of photogenerated carriers. Furthermore, the origin and detailed mechanism for diethylenetriamine (DETA) that served as a high efficient stabilizer of TiO2 {001} facet have been theoretically investigated. Finally, a new DETA-modified Ostwald ripening mechanism was originally proposed when studying the growth mechanism of the mesoporous core-shell TiO2 spherical microstructures with coexposed {001}/{101} facets.

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Funding

This work was financially supported by The National Key Research and Development Program of China (Grant. No: 2016YFC0700901, 2016YFC0700607) and the Project of BZZ14J001.

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Authors and Affiliations

  1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Liang Wang, Yingjuan Xie, Wenxiu Liu, Qi Wang & Wenbin Cao

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  1. Liang Wang
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  2. Yingjuan Xie
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  3. Wenxiu Liu
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  4. Qi Wang
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  5. Wenbin Cao
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Correspondence to Wenbin Cao.

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Responsible editor: Suresh Pillai

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Wang, L., Xie, Y., Liu, W. et al. Synthesis of mesoporous core-shell TiO2 microstructures with coexposed {001}/{101} facets: enhanced intrinsic photocatalytic performance. Environ Sci Pollut Res 25, 31250–31261 (2018). https://doi.org/10.1007/s11356-018-3113-9

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