The Influence of Morphology on Photo-catalytic Activity and Optical Properties of Nanocrystalline ZnO Powder
Corresponding Author: Javad Moghaddam
Nano-Micro Letters,
Vol. 4 No. 4 (2012), Article Number: 197-201
Abstract
ZnO nano-particles were synthesized via an ammonical ammonium carbonate solution by precipitation method in presence of some additives such as urea, oleic and stearic acid. The morphology and crystallinity of the obtained zinc oxide particles depend critically on the type of additive which was used. Additives also affected the crystal orientation of precipitate nano-particles. SEM, XRD, BET and UV-visible were used to characterize morphology, microstructure, specific surface area and optical properties of the products. Photo-catalysis properties of the as-prepared ZnO powders were evaluated by degradation of methyl red (acid red) in aqueous solution exposed to UV-light. Results suggested a close relationship among the morphology, size and surface area on photo-catalysis and optical properties of the particles. The widest Eg value (3.56 eV), highest degradation and decolorization efficiency (99%) were obtained from a sample with the smallest grain size (largest surface area) which were used urea as an additive.
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- K. D. Bhatte, Sh. I. Fujita, M. Arai, A. B. Pandit and B. M. Bhanage, Ultrason. Sonochem. 18 54 (2011). http://dx.doi.org/10.1016/j.ultsonch.2010.06.001
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- Mingce Long, Jingjing Jiang, Yan Li, Ruqiong Cao, Liying Zhang and Weimin Cai, Nano-Micro Lett. 3, 171 (2011). http://dx.doi.org/10.3786/nml.v3i3.p171-177
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- J. S. Park and D. W. Park, Surf. Coat. Tech. 205, S79 (2010). http://dx.doi.org/10.1016/j.surfcoat.2010.04.046
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- K. G. Chandrappa and T. V. Venkatesha, Nano-Micro Lett. 4, 14 (2012). http://dx.doi.org/10.3786/nml. v4i1.p14-24
- R. Y. Hong, J. H. Li, L. L. Chen, D. Q. Liu, H. Z. Li, Y. Zheng and J. Ding, Powder Technol. 189, 426 (2009). http://dx.doi.org/10.1016/j.powtec.2008.07.004
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- A. Mills and S. L. Hunte, J. Photochem. Photobiol. A 108, 1 (1997). http://dx.doi.org/10.1016/S1010-6030(97)00118-4201
References
K. D. Bhatte, Sh. I. Fujita, M. Arai, A. B. Pandit and B. M. Bhanage, Ultrason. Sonochem. 18 54 (2011). http://dx.doi.org/10.1016/j.ultsonch.2010.06.001
A. K. Singh, Adv. Powder Technol. 21, 609 (2010). http://dx.doi.org/10.1016/j.apt.2010.02.002
Sh. Khameneh Asl, S. K. Sadrnezhaad and M. Kianpourrad, Mater. Lett. 64, 1935 (2010). http://dx.doi.org/10.1016/j.matlet.2010.06.043
L. Lin, H. Watanabe, M. Fuji and M. Takashi, Adv. Powder Technol. 20, 185 (2009). http://dx.doi.org/10.1016/j.apt.2008.08.001
Ch. H. Lu, Y. CH. Lai and R. B. Kale, J. Alloy. Compd. 477, 523 (2009). http://dx.doi.org/10.1016/j.jallcom.2008.10.076
Mingce Long, Jingjing Jiang, Yan Li, Ruqiong Cao, Liying Zhang and Weimin Cai, Nano-Micro Lett. 3, 171 (2011). http://dx.doi.org/10.3786/nml.v3i3.p171-177
R. Hong, T. Pan, J. Qian and H. Li, Chem. Eng. J. 119, 71 (2006). http://dx.doi.org/10.1016/j.cej.2006.03.003
J. S. Park and D. W. Park, Surf. Coat. Tech. 205, S79 (2010). http://dx.doi.org/10.1016/j.surfcoat.2010.04.046
X. Y. Shen, Y. C. Zhai and Y. H. Zhang, T. Nonferr. Metal. Soc. 20, S236 (2010). http://dx.doi.org/10.1016/S1003-6326(10)60046-5
K. G. Chandrappa and T. V. Venkatesha, Nano-Micro Lett. 4, 14 (2012). http://dx.doi.org/10.3786/nml. v4i1.p14-24
R. Y. Hong, J. H. Li, L. L. Chen, D. Q. Liu, H. Z. Li, Y. Zheng and J. Ding, Powder Technol. 189, 426 (2009). http://dx.doi.org/10.1016/j.powtec.2008.07.004
M. Movahedi, E. Kowsari, A. R. Mahjoub and I. Yavari, Mater. Lett. 62, 3856 (2008). http://dx.doi.org/10.1016/j.matlet.2008.05.002
Ch. Ch. Chen, P. Liu and Ch. H. Lu, Chem. Eng. J. 144, 509 (2008). http://dx.doi.org/10.1016/j.cej.2008.07.047
Y. C. Lee, C. S. Yang, H. J. Huang, S. Y. Hu, J. W. Lee, C. F. Cheng, C. C. Huang, M. K. Tsai and H. C. Kuang, J. Lumin. 130, 1756 (2010). http://dx.doi.org/10.1016/j.jlumin.2010.04.005
S. Suwanboon, P. Amornpitoksuk and N. Muensit, Ceram. Int. 37, 2247 (2011). http://dx.doi.org/10.1016/j.ceramint.2011.03.016
A. Mills and S. L. Hunte, J. Photochem. Photobiol. A 108, 1 (1997). http://dx.doi.org/10.1016/S1010-6030(97)00118-4201