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The Influence of Oxygen Content on the Thermal Activation of Hematite Nanowires
Author(s) -
Ling Yichuan,
Wang Gongming,
Reddy Jay,
Wang Changchun,
Zhang Jin Z.,
Li Yat
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201107467
Subject(s) - hematite , nanowire , photocurrent , materials science , thermal decomposition , oxygen , chemical engineering , nanotechnology , chemistry , metallurgy , optoelectronics , organic chemistry , engineering
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.