Atomic scale study of surface orientations and energies of Ti 2 O 3 crystals
[1];
[2];
- Department of Materials Science and Engineering, Southern University of Science and Technology, 1088 Xueyuan Blvd, Shenzhen, Guangdong 518055, China
- School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China
- Environmental Molecular Science Laboratory, 902 Battelle Boulevard, Richland, Washington 99352, USA
- Energy and Environmental Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352, USA
For nanostructured particles, the faceting planes and their terminating chemical species are two critical factors that govern the chemical behavior of the particle. The surface atomistic structure and termination of the Ti2O3 crystals were analyzed using atomic-scale aberration-corrected scanning transmission electron microscopy (STEM) combining with density functional theory (DFT) calculations. STEM imaging reveals that the Ti2O3 crystal are most often faceted along (001), (012), (-114) and (1-20) planes. DFT calculation indicates that the (012) surface with TiO-termination have the lowest cleavage energy and correspondingly the lowest surface energy, indicating that (012) will be the most stable and prevalent surfaces in Ti2O3 nanocrystals. These observations provide insights for exploring the interfacial process involving Ti2O3 nanoparticles.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1416680
- Report Number(s):
- PNNL-SA-122134; 49573; KP1704020
- Journal Information:
- Applied Physics Letters, Vol. 111, Issue 18; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
One-step synthesis of dandelion-like lanthanum titanate nanostructures for enhanced photocatalytic performance
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journal | January 2020 |
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