Preparation and Photocatalytic Property of Dendritic TiO₂/VO_x Nanofibers

Abstract:

TiO₂/VO_x nanofibers were synthesized via electrospinning and dipping technologies. They increased the photocatalytic property by reducing the recombination rate of electrons and holes at the surface of TiO₂. The composition, structure and morphology were characterized. The effect of annealing temperature to the dendritic structure and their photocatalytic property were demonstrated. The results showed dendritic TiO₂/VO_x nanofiers were obtained via dipping in vanadium sol, which was annealed at 550°C in 90% Ar/10% H₂ atmosphere. The average diameter of the samples was 354±42nm. Both the size and the number of dendritic structure were increased as the annealing temperature was rising. The degradation rate of methyl orange (5mg/L) by as-prepared TiO₂/VO_x nanofibers was 76.4% after exposure under UV light for 120min, which was 25.7% higher than which annealed in air atmosphere.

• Periodical: Materials Science Forum (Volume 814)
• Pages: 167-172
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.814.167
• Online since: March 2015
• Authors: Le Tian Teng, Kang Zhao*, Yu Fei Tang, Xi Chen
• Keywords: Dendritic Structure, Electrospinning, Nanofiber, TiO₂, VO_x

References

[1] Y. Xia, P. Yang. Adv Mater, 2003, 15(5): 351-456.

[2] S. X. Liu, H. Liu. Chemical Industry Press, 2005: 52-53.

[3] L. Gao, S. Zheng, Q. H. Zhang. Chemical Industry Press, 2005: 42-153.

[4] K. Hashimoto, H. Irie, A. Fujishima. 2005, 44: 8269-8285.

[5] F. B. Meng, Y. Q. Zhan. European Polymer Journal, 2011, 47(2011): 1563–1568.

[6] C.W. Wang, W.D. Zhu, J.B. Chen, and et al. Thin. Solid. Film. 556(2014)440-446.

[7] M. Li, T. Deng, S. Liu, F. Zhang, G. Zhang. App. Surf. Sci. 297(2014)147-152.

[8] K.I. Choi, S.H. Lee, J.Y. Park, and et al. Mater. Lett. 112(2013)113-116.

[9] L. L. Wang, X. L. She, F. Yuan. Micronanoelectronic Technology, Vol. 45(7): 392-395.

[10] A. Frenot, I. S. Chronakis. Colloid Interface Sci. 2003, 8(1): 64-75.

[11] T. Umebayashi, T. S. Yamaki, Tanaka S. Chemistry Letter, 2003, 32(4): 310-311.

[12] R. Asahi, T. Morikawa, T. Ohwaki. Science, 2001, 293(5528): 269-271.

[13] S. Permpoon, M. Houmard, D. Riassetto. Thin Solid Films, 2008, 516: 957~966.

DOI: 10.1016/j.tsf.2007.06.005

[14] Rainer Osterman. Nano Letters, 2006, 6(6): 1297-1302.

[15] H. Liu, S. P. Gong, J. Q. Liu. Journal of Functional Materials, 2011, 11(427): 17-20.

[16] C. Q. Feng, L. Li, Z. P. Guo. Materials Letters, 2014, 117(2): 134-137.

[17] Y. L. Pu, J. Z. Fang, F. Peng. Chinese Journal of Catalysis, 2007, 28(3): 251-256.