Template-Free Sonochemical Preparation of ZnO Cauliflower-Like Microstructures

Abstract:

Cauliflower-like ZnO superstructures composed of nanoparticles in large scale were successfully synthesized only using Zn(CH3COO)2•2H2O and triethanolamine (TEA) aqueous solution mixtures via a template-free sonochemical process at the ambient condition. A number of techniques, including X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), UV-visible absorption and photoluminescence (PL) were used to characterize the obtained ZnO products. It has been interestingly found that UV-Vis absorption spectrum shows not only a weak and sharp peak at 367 nm in ultraviolet region but also a strong and broad band centered at 564 nm in visible region. The possible formation mechanism of ZnO cauliflower-like structure is also proposed.

• Periodical: Materials Science Forum (Volumes 663-665)
• Pages: 125-128
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.663-665.125
• Online since: November 2010
• Authors: Chong Hai Deng, Han Mei Hu, Shang Lin Wang, Guo Quan Shao
• Keywords: Microstructure, Optical Property, Sonochemical Synthesis, Zinc Oxide (ZnO)

References

[1] M. H. Huang, S. Mao, H. Feick, H. Q. Yan, Y. Y. Wu, H. Kind, E. Weber, R. Russo and P. D. Yang: Science. Vol. 292 (2001), p.1897.

DOI: 10.1126/science.1060367

[2] P. Yang, H. Yan, S. Mao, R. Russo, J. Johnson, R. Saykally, N. Morris, J. Pham, R. He and H. J. Choi: Adv. Funct. Mater. Vol. 12 (2002) p.323.

DOI: 10.1002/1616-3028(20020517)12:5<323::aid-adfm323>3.0.co;2-g

[3] P. X. Gao and Z. L Wang: J. Am. Chem. Soc. Vol. 125 (2003), p.11299.

[4] B. D. Yao, Y. F. Chan and N. Wang: Appl. Phys. Lett. Vol. 81 (2002), p.757.

[5] C. L. Wu, L. Chang, H. G. Chen, C. W. Lin, T. F. Chang, Y. C. Chao and J. K. Yan: Thin Solid Films. Vol. 498 (2006), p.137.

[6] L. Spanhel and M. Anderson: J. Am. Chem. Soc. Vol. 113 (1991), p.2826.

[7] F. Li, Y. Ding, P. X. Gao and X. Q. Xin: Angew. Chem. Int. Ed. Vol. 43 (2004), p.5238.

[8] H. M. Hu, X. H. Huang, C. H. Deng, X. Y. Chen and Y. T. Qian: Mater. Chem. Phys. Vol. 106 (2007), p.58.

[9] P. L. Zhu, J. W. Zhang, Z. S. Wu and Z. J. Zhang: Cryst. Growth Des. Vol. 8 (2008), p.3148.

[10] S. Bhattacharyya and A. Gedanken : J. Phys. Chem. C, Vol. 112 (2008), p.659.

[11] A.B. Djurisˇic and Y.H. Leung: Small. Vol. 2 (2006), p.944.

[12] L. Kumari, W. Z. Li, C. H. Vannoy, R. M. Leblance and D. Z. Wang: Mater. Res. Bull. Vol. 45 (2010), p.190.

[13] M. Shim and P. Guyot-Sionnest: J. Am. Chem. Soc. Vol. 123 (2001), p.11651.