Size Effects on the Photophysical Properties of Colloidal Anatase TiO2 Particles: Size Quantization versus Direct Transitions in This Indirect Semiconductor?

1995 ◽  
Vol 99 (45) ◽  
pp. 16646-16654 ◽  
Author(s):  
N. Serpone ◽  
D. Lawless ◽  
R. Khairutdinov
2016 ◽  
Vol 173 ◽  
pp. 42-51 ◽  
Author(s):  
R.P. Barkul ◽  
V.B. Koli ◽  
V.B. Shewale ◽  
M.K. Patil ◽  
S.D. Delekar
Keyword(s):  

2003 ◽  
Vol 13 (12) ◽  
pp. 2890 ◽  
Author(s):  
Hiroshi Imahori ◽  
Yukiyasu Kashiwagi ◽  
Takeshi Hanada ◽  
Yoshiyuki Endo ◽  
Yoshinobu Nishimura ◽  
...  

1996 ◽  
Vol 11 (6) ◽  
pp. 1325-1328 ◽  
Author(s):  
L. Zhao ◽  
A. T. Chien ◽  
F. F. Lange ◽  
J. S. Speck

The hydrothermal growth of perovskite BaTiO3 powders has been studied by transmission electron microscopy. The growth is carried out under high alkaline conditions (pH — 14) achieved with Ba(OH)2. Anatase (TiO2) is used as a titanium source. The perovskite BaTiO3 nucleates heterogeneously on anatase TiO2 particles with an epitaxial relationship of (001)TiO2 ‖ (001)BaTiO3 and [010]TiO2 ‖ [010]BaTiO3. This epitaxial relationship preserves the parallel alignment of the oxygen octahedra between the structures. A mosaic misorientation between (001)TiO2 and (001)BaTiO3 along 〈110〉 is seen in this relationship due to the lattice mismatch between TiO2 and BaTiO3. After complete conversion of the anatase to BaTiO3, the BaTiO3 particles develop into {111} octahedrons with ∼10 nm {001} and {110} microfacets on the {111} faces. This evolution suggests that {111} becomes the stable crystallographic facet for BaTiO3 under highly alkaline conditions.


2014 ◽  
Vol 160 (1) ◽  
pp. 152-152 ◽  
Author(s):  
Huiting Liu ◽  
Linglan Ma ◽  
Jinfang Zhao ◽  
Jie Liu ◽  
Jingying Yan ◽  
...  
Keyword(s):  

2008 ◽  
Vol 62 (17-18) ◽  
pp. 2954-2956 ◽  
Author(s):  
Shuanfeng Hu ◽  
Haiyan Wang ◽  
Jieming Cao ◽  
Jinsong Liu ◽  
Baoqing Fang ◽  
...  

2019 ◽  
Vol 205 ◽  
pp. 304-309 ◽  
Author(s):  
D.P. Singh ◽  
K. Agrahari ◽  
A.S. Achalkumar ◽  
C.V. Yelamaggad ◽  
R. Manohar ◽  
...  

2010 ◽  
Vol 177 ◽  
pp. 62-65
Author(s):  
Na Zhang ◽  
Hai Fang Xu ◽  
Yu Lin Li ◽  
Qiang Li ◽  
Cheng Zhang

Starting from H2TiO3, potassium teteratitanate (K2Ti4O9) nanofibres with the length of several micrometers and the diameter of 100nm were directly synthesized by solid state reaction. The novel phase transformation and structure change behavior was investigated by the X-ray diffraction technique (XRD), scanning electron microscopy (SEM) in details. In series of hydrothermal reaction, the K2Ti4O9 could transfer to anatase TiO2 and rutile TiO2. Aggregated anatase TiO2 particles and rod-like rutile TiO2 were produced respectively in 1M HCl solutions at 1600C and 2200C. When the 0.01M HCl solution was considered as solvent, the mixture of floral anatase TiO2 and K2Ti4O9 were present together.


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