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Porous single-crystalline titanium dioxide at 2 cm scale delivering enhanced photoelectrochemical performance

Author

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  • Fangyuan Cheng

    (Chinese Academy of Sciences)

  • Guoming Lin

    (Chinese Academy of Sciences)

  • Xiuli Hu

    (Chinese Academy of Sciences)

  • Shaobo Xi

    (Chinese Academy of Sciences)

  • Kui Xie

    (Chinese Academy of Sciences)

Abstract

Porous single-crystalline (P-SC) titanium dioxide in large size would significantly enhance their photoelectrochemical functionalities owing to the structural coherence and large surface area. Here we show the growth of P-SC anatase titanium dioxide on an 2 cm scale through a conceptually different lattice reconstruction strategy by direct removal of K/P from KTiOPO4 lattice leaving the open Ti-O skeleton simultaneously recrystallizing into titanium dioxide. The (101) facet dominates the growth of titanium dioxide while the relative titanium densities on different parent crystal facets control the microstructures. Crystal growth in reducing atmospheres produces P-SC TinO2n-1 (n = 7~38) in magneli phases with enhanced visible-infrared light absorption and conductivity. The P-SC TinO2n-1 shows enhanced exciton lifetime and charge mobility. The P-SC TinO2n-1 boosts photoelectrochemical oxidation of benzene to phenol with P-SC Ti9O17 showing 60.1% benzene conversion and 99.6% phenol selectivity at room temperature which is the highest so far to the best of our knowledge.

Suggested Citation

  • Fangyuan Cheng & Guoming Lin & Xiuli Hu & Shaobo Xi & Kui Xie, 2019. "Porous single-crystalline titanium dioxide at 2 cm scale delivering enhanced photoelectrochemical performance," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-11623-w
    DOI: 10.1038/s41467-019-11623-w
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    Cited by:

    1. Yanzhi Wang & Hangjuan He & Hao Lv & Fengrui Jia & Ben Liu, 2024. "Two-dimensional single-crystalline mesoporous high-entropy oxide nanoplates for efficient electrochemical biomass upgrading," Nature Communications, Nature, vol. 15(1), pages 1-12, December.

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