The Influence of Oxygen Content on the Thermal Activation of Hematite Nanowires

Live wire: Thermal decomposition of β‐FeOOH nanowires at 550 °C in an oxygen‐deficient atmosphere generates highly photoactive hematite nanowires (N‐hematite), which yielded a substantially enhanced photocurrent density, as compared to a hematite sample prepared in air (A‐hematite). This enhanced ph...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2012-04, Vol.51 (17), p.4074-4079
Main Authors: Ling, Yichuan, Wang, Gongming, Reddy, Jay, Wang, Changchun, Zhang, Jin Z., Li, Yat
Format: Article
Language:English
Subjects:
Activation
Density
Hematite
Nanowires
Oxygen content
oxygen vacancies
photochemistry
Photocurrent
Vacancies
water splitting
Wire
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Summary:Live wire: Thermal decomposition of β‐FeOOH nanowires at 550 °C in an oxygen‐deficient atmosphere generates highly photoactive hematite nanowires (N‐hematite), which yielded a substantially enhanced photocurrent density, as compared to a hematite sample prepared in air (A‐hematite). This enhanced photoactivity is attributed to the improved donor density of hematite nanowires, as a result of formation of oxygen vacancies.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201107467