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Hollow Anatase TiO2 Single Crystals and Mesocrystals with Dominant {101} Facets for Improved Photocatalysis Activity and Tuned Reaction Preference
Abstract
Faceting photocatalysts has attracted increasing interest to improve photocatalytic activity by optimizing surface charge carrier separation/transfer. In principle, a high photocatalytic activity is co-contributed by both high surface separation/transfer and low bulk recombination of charge carriers. However, little effort focuses on lowering bulk recombination of charge carriers in faceted photocatalysts. In this work, we report the synthesis of hollow anatase TiO 2 single crystals and mesocrystals with dominant {101} facets by a new route with PO 4 3– /F – as morphology controlling agent. It is found that with respect to solid crystals, being hollow crystals and mesocrystals can substantially improve photocatalytic activity (O 2 /H 2 evolution from water splitting, CH 4 generation from photoreduction of CO 2 ) as a result of the synergistic effects of shortened bulk diffusion length of carriers for the decreased bulk recombination and increased surface area. Furthermore, the photocatalysis reaction preference toward O 2 and H 2 evolution from water splitting can be tuned.
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Cites
The surface science of titanium dioxide
Diebold, U. (2003) · Surface Science Reports · doi:10.1016/s0167-5729(02)00100-0 · Cited by 7,944
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Solution-Phase Synthesis of Titanium Dioxide Nanoparticles and Nanocrystals
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Zhou, X., Liu, N., & Schmuki, P. (2017) · ACS Catalysis · doi:10.1021/acscatal.6b03709 · Cited by 287
Zafar, Z., Yi, S., Li, J., Li, C., Zhu, Y., Zada, A., Yao, W., Liu, Z., & Yue, X. (2022) · ENERGY & ENVIRONMENTAL MATERIALS · doi:10.1002/eem2.12171 · Cited by 284
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Metadata
- Authors
- Jiao, W., Wang, L., Liu, G., Lu, G. Q. (., & Cheng, H.-M.
- Venue
- ACS Catalysis
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-07-31
- Volume
- 2
- Issue
- 9
- Pages
- 1854-1859
- ISSN
- 2155-5435 (ISSN-L)
- OpenAlex
- W2044461153
- Cited by
- 176
- References
- 1
- FWCI
- 7.41
- Type
- journal article
- Language
- en
- Open access
- closed
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