Journal
RSC ADVANCES
Volume 2, Issue 15, Pages 6178-6184Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ra20797d
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Funding
- National Natural Science Foundation of China [20871071, 21171099]
- Science and Technology Commission Foundation of Tianjin [09JCYBJC03600, 10JCYBJC03900]
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The controlled fabrication of metal oxide nanocrystals with exposed high-index facets has drawn enormous research attention. In this article, we have synthesized single-crystalline alpha-Fe2O3 crystals bound by six {104} high-index facets using a simple hydrothermal method. The formation mechanism of the unique crystal structure has been systematically studied, revealing that the alpha-Fe2O3 crystals are formed through an aggregation-phase transformation-recrystallization mechanism. More importantly, we have demonstrated that the unique alpha-Fe2O3 crystals with {104} high-index facets are highly advantageous for high performance gas sensors. This work sheds some new light on using high-index faceted nanocrystals for high performance functional device applications.
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