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Probing Surface Structures of CeO2, TiO2, and Cu2O Nanocrystals with CO and CO2 Chemisorption
Abstract
CO and CO 2 chemisorption on uniform CeO 2, TiO 2, and Cu 2 O nanocrystals with various morphologies were comprehensively studied with in-situ diffuse reflectance infrared Fourier transform spectroscopy. The formed adsorbates were observed to be morphology dependent. CO or CO 2 chemisorbed at the metal cation sites, and bidentate and bridged carbonates involving the O sites are sensitive to the surface composition and the local coordination environments of surface metal cations and O anions and can be correlated well with the surface structures of facets exposed on oxide nanocrystals. Carbonate and carbonite species formed by CO chemisorption can probe the different facets of CeO 2 . Carbonate species formed by CO chemisorption can probe the different facets of TiO 2 . Adsorbed CO and carbonate species formed by CO chemisorption can probe the different facets of Cu 2 O, and adsorbed CO 2 formed by CO 2 chemisorption can also probe the different facets of Cu 2 O. These results demonstrate chemisorption of probing molecules as a convenient technique to identify surface structures of different facets of oxide nanocrystals and lay the foundations of surface structures for the fundamental understanding of catalysis and other surface-mediated functions of CeO 2, TiO 2, and Cu 2 O nanocrystals.
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The surface science of titanium dioxide
Diebold, U. (2003) · Surface Science Reports · doi:10.1016/s0167-5729(02)00100-0 · Cited by 7,944
Cited by
Pu, Y., Luo, Y., Wei, X., Sun, J., Li, L., Zou, W., & Dong, L. (2019) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2019.04.093 · Cited by 359
Zhang, S., Xia, Z., Zou, Y., Cao, F., Liu, Y., Ma, Y., & Qu, Y. (2019) · Journal of the American Chemical Society · doi:10.1021/jacs.9b03217 · Cited by 304
Impacts of the Catalyst Structures on CO2 Activation on Catalyst Surfaces
Etim, U. J., Zhang, C., & Zhong, Z. (2021) · Nanomaterials · doi:10.3390/nano11123265 · Cited by 175
Metadata
- Authors
- Chen, S., Cao, T., Gao, Y., Li, D., Xiong, F., & Huang, W.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-09-09
- Volume
- 120
- Issue
- 38
- Pages
- 21472-21485
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2517817338
- Cited by
- 192
- References
- 1
- FWCI
- 6.99
- Type
- journal article
- Language
- en
- Open access
- closed
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- Chen, S., Cao, T., Gao, Y., Li, D., Xiong, F., & Huang, W. (2016). Probing Surface Structures of CeO2, TiO2, and Cu2O Nanocrystals with CO and CO2 Chemisorption. The Journal of Physical Chemistry C. https://doi.org/10.1021/acs.jpcc.6b06158
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