期刊
NANOSCALE RESEARCH LETTERS
卷 7, 期 -, 页码 1-9出版社
SPRINGEROPEN
DOI: 10.1186/1556-276X-7-590
关键词
TiO2 nanocrystals; Highly active {001} facets; Nitrogen/sulfur co-doped; Visible-light photocatalytic performance
资金
- National Natural Science Foundation of China [51102246]
- Institute of Metal Research, Chinese Academy of Sciences [Y0N5A111A1]
- Youth Innovation Promotion Association, Chinese Academy of Sciences [Y2N5711171]
Nitrogen/sulfur co-doped anatase TiO2 nanocrystals with a high specific surface area and a high percentage of {001} facets were synthesized by a solvent-thermal process followed by the calcination with thiourea at an optimum heat treatment temperature. Under current experimental conditions, the optimum heat treatment temperature was found at 300A degrees C, which successfully introduced nitrogen and sulfur dopants into the anatase lattice to replace a small portion of oxygen atoms while preserving the geometry of these anatase TiO2 nanocrystals to maintain a high percentage of {001} facets. These nitrogen/sulfur co-doped anatase TiO2 nanocrystals demonstrated a largely enhanced light absorption in the whole visible-light range and exhibited much higher photocatalytic performance than both P25 TiO2 nanoparticles and anatase TiO2 nanocrystals with a high percentage of {001} facets under visible-light illumination.
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