Abstract
Nanometer-sized bismuth tungsten oxides, Bi2WO6s, were successfully synthesized by hydrothermal treatment at 200 °C for 24 hr, and their morphologies and crystallite sizes were influenced by adjusting the conditions to pH 4, 7, and 9. TEM images revealed that the particles were sheet-shaped and the crystallite sizes ranged from 7–120 nm. The samples absorbed in the visible range at about 380–400 nm. The lowest conductivity, 1.0×106 ohm/square, was observed for Bi2WO6 prepared at pH 4 with a 150 nm film thickness. As the annealing temperature for Bi2WO6 prepared at pH 7 was increased, the conductivity decreased due of formation of larger particles by coagulation and sintering at high temperatures. Conductivity appears to improve with increasing film thickness up to 1,500 nm.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
B. Frit and J. P. Mercurio, J. Alloy. Compd., 188, 27 (1992).
V. Sharma, A. K. Shukla and J. Gopalakrishnan, J. Mater. Chem., 4, 703 (1994).
S. Zhang, J. Shen, H. Fu, W. Dong, Z. Zheng and L. Shi, J. Solid State Chem., 180, 1456 (2007).
X. Zhao, T. Xu, W. Yao, C. Zhang and Y. Zhu, Appl. Catal. B: Environ., 72, 92 (2007).
A. M. Cruz and F. E. L. Rodriguez, Mater. Res. Bull., 42, 1851 (2007).
C.-Y. Hsieh and K.-Z. Fung, J. Phys. Chem. Solids, 69, 302 (2008).
J. Yu, J. Xiong, B. Cheng, Y. Yu and J. Wang, J. Solid State Chem., 178, 1968 (2005).
H.-J. Jeon, M.-K. Jeon, M. Kang, S.-G. Lee, Y.-L. Lee, Y.-K. Hong and B.-H. Choi, Mater. Lett., 59, 1801 (2005).
M.-K. Jeon and M. Kang, Mater. Lett., 62, 676 (2008).
L. Zhou, W. Wang and L. Zhang, J. Mol. Catal. A: Chem., 268, 195 (2007).
H. Fu, C. Pan, L. Zhang and Y. Zhu, Mater. Res. Bull., 42, 696 (2007).
M. Crane, R. Forst, P. Willams and T. Kloprogge, J. Raman Spectrosc., 33, 62 (2002).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kim, D.Y., Kim, S., Yeo, MK. et al. Synthesis of nanometer sized Bi2WO6s by a hydrothermal method and their conductivities. Korean J. Chem. Eng. 26, 261–264 (2009). https://doi.org/10.1007/s11814-009-0044-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11814-009-0044-7