Atomic insights into nanoparticle formation of hydroxyfluorinated anatase featuring titanium vacancies
Abstract
Anatase TiO2 with exposed highly reactive (001) surface is commonly prepared using solution-based synthesis in the presence of a fluorinating agent acting as a structure directing agent. Here, the solvothermal reaction of titanium tetraisopropoxide in the presence of aqueous HF has resulted in the stabilization of an oxyhydroxyfluorinated anatase phase featuring cationic vacancies. In the present work, we have studied its formation mechanism, revealing a solid-state transformation of a highly defective anatase phase having a hydroxyfluoride composition that subsequently evolves through an oxolation reaction into an oxyhydroxyfluoride phase. Importantly, this work confirms that titanium alkoxide precursors can react with HF via a fluorolysis process yielding fluorinated molecular precursors, which further condense to produce new composition and structural features deviating from a well ordered anatase network.
- Authors:
-
- Sorbonnes Univ., Paris (France)
- Univ. Bretagne Loire, Univ. du Maine, Le Mans Cedex 9 (France)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- European Commission - Community Research and Development Information Service (CORDIS) - Seventh Framework Programme (FP7); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1339461
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Inorganic Chemistry
- Additional Journal Information:
- Journal Volume: 55; Journal Issue: 14; Journal ID: ISSN 0020-1669
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; crystals; detector; facets
Citation Formats
Li, Wei, Body, Monique, Legein, Christophe, Borkiewicz, Olaf J., and Dambournet, Damien. Atomic insights into nanoparticle formation of hydroxyfluorinated anatase featuring titanium vacancies. United States: N. p., 2016.
Web. doi:10.1021/acs.inorgchem.6b01259.
Li, Wei, Body, Monique, Legein, Christophe, Borkiewicz, Olaf J., & Dambournet, Damien. Atomic insights into nanoparticle formation of hydroxyfluorinated anatase featuring titanium vacancies. United States. https://doi.org/10.1021/acs.inorgchem.6b01259
Li, Wei, Body, Monique, Legein, Christophe, Borkiewicz, Olaf J., and Dambournet, Damien. Tue .
"Atomic insights into nanoparticle formation of hydroxyfluorinated anatase featuring titanium vacancies". United States. https://doi.org/10.1021/acs.inorgchem.6b01259. https://www.osti.gov/servlets/purl/1339461.
@article{osti_1339461,
title = {Atomic insights into nanoparticle formation of hydroxyfluorinated anatase featuring titanium vacancies},
author = {Li, Wei and Body, Monique and Legein, Christophe and Borkiewicz, Olaf J. and Dambournet, Damien},
abstractNote = {Anatase TiO2 with exposed highly reactive (001) surface is commonly prepared using solution-based synthesis in the presence of a fluorinating agent acting as a structure directing agent. Here, the solvothermal reaction of titanium tetraisopropoxide in the presence of aqueous HF has resulted in the stabilization of an oxyhydroxyfluorinated anatase phase featuring cationic vacancies. In the present work, we have studied its formation mechanism, revealing a solid-state transformation of a highly defective anatase phase having a hydroxyfluoride composition that subsequently evolves through an oxolation reaction into an oxyhydroxyfluoride phase. Importantly, this work confirms that titanium alkoxide precursors can react with HF via a fluorolysis process yielding fluorinated molecular precursors, which further condense to produce new composition and structural features deviating from a well ordered anatase network.},
doi = {10.1021/acs.inorgchem.6b01259},
journal = {Inorganic Chemistry},
number = 14,
volume = 55,
place = {United States},
year = {Tue Jun 28 00:00:00 EDT 2016},
month = {Tue Jun 28 00:00:00 EDT 2016}
}
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Works referencing / citing this record:
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