Tunable Optical Absorption on "ZnxTixO4-3yN2y" Nanosized Spine
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- 作者：David Berthebaud ; Fabien Grasset ; Vincent Allegret-Maret ; Soraya Ababou-Girard ; Stanislav Pechev
- 刊名：Journal of Physical Chemistry C
- 出版年：2007
- 出版时间：June 7, 2007
- 年：2007
- 卷：111
- 期：22
- 页码：7883 - 7888
- 全文大小：287K
- 年卷期：v.111,no.22(June 7, 2007)
- ISSN：1932-7455
文摘
Using a recently developed sol-gel route to prepare new Ti4+@ZnO nanocolloids, we were able to synthesize,at relatively low temperature (maximum 750 
C) and very short annealing time (1 h) under ammonia gasflow, nanosized colored "Zn1.33Ti1.33O4-3yN2y" oxynitride powders (Zn/Ti = 1) with tunable optical absorption.Above the dissociation temperature of ammonia, the UV-vis spectra are progressively red-shifted withincreasing nitriding temperature and the nanosized powder shows a yellowish color at 700 C under NH3.X-ray diffraction, scanning electron microscopy, X-ray photoemission spectroscopy, oxygen and nitrogenanalysis, and UV-vis spectroscopy measurements show that this red shift is directly related to the nitrogencontent.
C) and very short annealing time (1 h) under ammonia gasflow, nanosized colored "Zn1.33Ti1.33O4-3yN2y" oxynitride powders (Zn/Ti = 1) with tunable optical absorption.Above the dissociation temperature of ammonia, the UV-vis spectra are progressively red-shifted withincreasing nitriding temperature and the nanosized powder shows a yellowish color at 700 C under NH3.X-ray diffraction, scanning electron microscopy, X-ray photoemission spectroscopy, oxygen and nitrogenanalysis, and UV-vis spectroscopy measurements show that this red shift is directly related to the nitrogencontent.