Preparation and Characterization of Diatomite Supported Cu-Doped TiO₂ Photocatalysts

Abstract:

Diatomite supported Cu-doped TiO₂ photocatalysts were synthesized by sol-gel method and characterized by X-ray diffraction (XRD), SEM and UV-vis diffuses reflectance of spectroscopy (DRS). The photocatalytic activity was evaluated by photocatalytic degradation of methylene blue solution under visible light irradiation. The results show that TiO₂/diatomite ratio had a great influene on their photocatalytic activities. All prepared Cu-TiO₂/diatomite had a better photocatalytic activities in comparison with Cu-TiO₂ and the Cu-TiO₂(30)/diatomite had higher photocatalytic activity than others. The photocatalytic degradation of methylene blue is due to the breaking of the chormophoric group, rather than the simple decoloration.

• Periodical: Advanced Materials Research (Volume 853)
• Pages: 73-78
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.853.73
• Online since: December 2013
• Authors: Yan Xi Deng*, Chuan Chuan Liu, Guang Yang
• Keywords: Cu-Doped TiO₂ Nanoparticles, Diatomite, Methylene Blue, Photocatalytic Activity, Visible Light

References

[1] J. H Mo, Y. P Zhang, J. J Lamson, R. Y Zhao. Atmospheric Environment, 43 (2009), pp.2229-2246.

[2] S. B Wang, H.M. Ang, Moses O. Tade. Environment International, 33 (2007), pp.694-705.

[3] Pantelis A. Pekakis, Nikolaos P. Xekoukoulotakis, Dionissios Mantzavinos. Water Research, 40 (2006), pp.1276-1286.

DOI: 10.1016/j.watres.2006.01.019

[4] Sadik W A, Nashed A W, El-Demerdash A-G M.J. Photochem. Photobiol. A: Chem, 189 (2007), pp.135-140.

[5] Yu H, Zhang K, Rossi C. J. Photochem. Photobiol. A: Chem, 188 (2007), pp.65-73.

[6] Kashif Naeem, Feng Ouyang. Physica B, 405 (2010), pp.221-226.

[7] L.S. Yoong, F.K. Chong, Binay K. Dutta. Energy, 34 (2009), p.1652–1661.

[8] C. M Fan, P. Xue, Y. P Sun. Journal of rare earths, 24 (2006), pp.309-313.

[9] X. W Cheng, X. J Yua, Z. P Xing. Applied Surface Science, 258 (2012), pp.3244-3248.

[10] Z. L He, W. X Que, J. Chen, Y. C He, G. F Wang. Journal of Physics and Chemistry of Solids, 74 (2013), p.924–928.

[11] H. Tian, J. F Ma, K. Li, J. J Li. Ceramics International, 35 (2009), pp.1289-1292.

[12] H.Y. Zhu, J. Orthman, J.Y. Li, J. C Zhao, G.J. Churchman and E.F. Vansant. Chem. Master, 14 (2002), p.5037.

[13] D. Beydoun, R. Amal, G.K. -C. Low, S. McEvoy. J. Phys. Chem, B, 104 (2000), p.4387.

[14] M.V. Shankar, S. Anandan, N. Venkatachalam, B. Arbindoo, V. Murugesan. Chemosphere, 63 (2006), pp.1014-1021.

[15] S. zhou, J. Lv, L.K. Guo, G.Q. Xu, D.M. Wang, Z.X. Zheng and Y.C. Wu. Applied Surface Science, 258 (2012), pp.6136-6141.

[16] B. Wang, Q. Li, W. Wang, Y. Li ,J. P Zhai. Applied Surface Science, 257 (2011), pp.3473-3479.

[17] X. W Cheng, X. J Yu , Z. P Xing. Applied Surface Science, 258 (2012), pp.3244-3248.

[18] C. C Wang, C. K Lee, M. D Lyu, L. C Juang. Dyes and pigments, 76 (2008), pp.817-824.