Browse > Article
http://dx.doi.org/10.4313/JKEM.2012.25.8.664

Effect of Processing Parameters on the Microstructure and Band Gap Energy of 1D-Na2Ti6O13  

Yun, Kang-Seop (Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University)
Ku, Hye-Kyung (Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University)
Kang, Woo-Seung (Department of Metallurgical & Materials Engineering, Inha Technical College)
Kim, Sun-Jae (Institute/Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.25, no.8, 2012 , pp. 664-669 More about this Journal
Abstract
Nano-structured one-dimensional $Na_2Ti_6O_{13}$ particles were synthesized by a molten salt process. Effects of processing parameters on the microstructure and band gap energy of the $Na_2Ti_6O_{13}$ powder were studied in this paper. For the synthesis of the $Na_2Ti_6O_{13}$ particles, two different raw materials of tubular shaped Na-titanate (Na-TiNT) and spherical shaped $TiO_2$ were utilized. Synthesizing with the raw material of Na-TiNT, around 70nm thick 1D-$Na_2Ti_6O_{13}$ with the bandgap energy of 3.5 eV was obtained at $810^{\circ}C$. Below $810^{\circ}C$ or without the presence of NaCl, 1D-$Na_2Ti_6O_{13}$ was in a relatively short in length and agglomerated state. With the processing temperature increased, the thickness of the 1D-$Na_2Ti_6O_{13}$ was also observed to be increased. On the other hand, when $TiO_2$ was employed as a raw material, the mixed amount of $Na_2CO_3$ played an important role in transforming the morphology and phase of the raw material, affecting the bandgap energy of the synthesized product. Specific surface area of the synthesized 1D-$Na_2Ti_6O_{13}$ was significantly affected by the raw and mixed materials as well as processing temperature. When Na-TiNT was processed at $810^{\circ}C$ with NaCl, the specific surface area of the 1D-$Na_2Ti_6O_{13}$ showed the best value of 30.63 $m^2/g$.
Keywords
Molten salt process; 1D-$Na_2Ti_6O_{13}$; Specific surface area; Band-gap energy;
Citations & Related Records
연도 인용수 순위
  • Reference
1 M. Holzinger, J. Maier, and W. Sitte, Solid State Ion., 86, 1055 (1996).   DOI
2 M. Holzinger, A. Benisek, W. Schnelle, E. Gmelin, J. Maier, and W. Sitte, J. Chem. Thermodyn., 35, 1469 (2003).   DOI
3 S. Baliteau, A. L. Sauvet, C. Lopez, and P. Fabry, Solid State Ion., 178, 1517 (2007).   DOI
4 K. Teshima, K. Yubuta, T. Shimodaira, T. Suzuki, M. Endo, T. Shishido, and S. Oishi, Cryst. Growth Des., 8, 465 (2008).   DOI
5 K. B. Lee, S. W. Lee, and S. B. Park, J. Cryst. Growth, 311, 4365 (2009).   DOI
6 L. M. Torres-Martinez, I. Juarez-Ramirez, K. D. Angel-Sanchez, L. Garza-Tovar, A. Cruz-Lopez, and G. D. Angel, J. Sol-Gel Sci. Technol., 47, 158 (2008).   DOI
7 E. Morgado Jr, B. Marinkovic, P. Jardim, M. Abreu, and F. Rizzo, J. Solid State Chem., 182, 172 (2009).   DOI
8 X. Qin, L. Jing, G. Tian, Y. Qu, and Y. Feng, J. Hazard. Mater., 172, 1168 (2009).   DOI
9 S. Papp, L. Korosi, V. Meynen, P. Cool, E. F. Vansant, and I. Dekany, J. Solid State Chem., 178, 1614 (2005).   DOI
10 S. H. Kang, S. H. Choi, M. S. Kang, J. Y. Kim, H. S. Kim, T. Hyeon, and Y. E. Sung, Adv. Mater., 20, 54 (2008).   DOI
11 S. Ogura, M. Kohno, K. Sato, and Y. Inoue, Phys. Chem. Chem. Phys., 1, 179 (1999).   DOI   ScienceOn
12 L. Zhen, C. Y. Xu, W. S. Wang, C. S. Lao, and Q. Kuang, Appl. Surf. Sci., 255, 4149 (2002).
13 K. R. Zhu, Y. Yuan, M. S. Zhang, J. M. Hong, Y. Deng, and Z. Yin, Solid State Commun., 144, 450 (2007).   DOI
14 M. Qamar, C. R. Yoon, H. J. Oh, D. H. Kim, J. H. Jho, K. S. Lee, W. J. Lee, H. G. Lee, and S. J. Kim, Nanotechnology, 17, 5922 (2006).   DOI
15 D. H. Kim, H. S. Hong, S. J. Kim, J. S. Song, and K. S. Lee, J. Alloy. Compd., 375, 259 (2004).   DOI   ScienceOn
16 A. L. Sauvet, S. Baliteau, C. Lopez, and P. Fabry, J. Solid State Chem., 177, 4508 (2004).   DOI
17 B. L. Wang, Q. Chen, R. H. Wang, and L. M. Peng, Chem. Phys. Lett., 376, 726 (2003).   DOI