Hydrothermal Synthesis and Photocatalytic Activity of TiO₂@CNTs Nanocomposite

Abstract:

TiO₂@CNTs nanocomposite was synthetized by a hydrothermal method at 453 K, using titanium tetrachloride as a precursor and nitrified CNTs as a support. The crystal phase, morphology, microstructure and element distribution of the sample were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscope (TEM), and scanning transmission electron microscopy (STEM-Mapping). The photocatalytic activity of the sample was measured by degrading methyl orange under UV illumination. The results showed that the titania particles in the shape of regular polygon decorate on the outer surface of CNTs evenly, and their sizes were about 7-20 nm. Moreover, photocatalytic activity of the nanocomposite was better than that of P25 Degussa and nitrated CNTs followed the apparent pseudo-first-order rate law. These results point out that synergistic effect exists between the titania and the carbon nanotubes in the nanocomposite.

• Periodical: Materials Science Forum (Volumes 743-744)
• Pages: 817-822
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.743-744.817
• Online since: January 2013
• Authors: Xuan Hui Zhang, Xiang Zheng, Yuan Cheng, Guo Hua Li, Xian Chao Hu
• Keywords: Characterize, Hydrothermal Synthesis, Photocatalytic Activity, TiO₂@CNTs Nanocomposite

References

[1] X.B. Chen, S.S. Mao, Chem. Rev. 107 (2007) 2891-2959.

[2] K. Woan, G. Pyrgiotakis, W. Sigmund, Adv. Mater. 21 (2009) 2233-2239.

[3] A. Fujishima, T.N. Rao, D.A. Tryk, J. Photochem. Photobiol. C 1 (2000) 1-21.

[4] D.M. He, L.X. Yang, S.Y. Kuang, et al., Electrochem. Commun. 9 (2007) 2467-2472.

[5] K.E. O'Shea, E. Pernas, J. Saiers, Langmuir 15 (1999) 2071-(2076).

[6] J. Arana, J.M. Dona-Rodriguez, E.T. Rendon, et al., Appl. Catal. B 44 (2003) 161-172.

[7] T. Cordero, J.M. Chovelon, C. Duchamp, et al., Appl. Catal. B 73 (2007) 209-219.

[8] B. Gao, G.Z. Chen, G. Li Puma. Appl. Catal. B 89 (2009) 503-509.

[9] A. Jitianu, T. Cacciaguerra, R. Benoit, et al., Carbon 42 (2004) 1147-1151.

[10] D. Beydoun, R. Amal, G.K. C Low, et al., J. Phys. Chem. B 104 (2000) 4387-4396.

[11] M.N. Chong, S. Le, B. Jin, et al., Sep. Purif. Technol. 67 (2009) 355-363.

[12] C. Aprile, A. Corma, H. Garcia, Phys. Chem. Chem. Phys. 10 (2008) 769-783.

[13] S. Campidelli, C. Klumpp, A. Bianco, et al., J. Phys. Org. Chem. 19 (2006) 531-539.

[14] E. Itoh, I. Suzuki, K. Miyairi, Jap. J. Appl. Phys. 44 (2005) 636-640.

[15] C. Peng, G.A. Snook, D.J. Fray, et al, Chem. Comm. 44 (2006) 4629-4631.

[16] S. Frank, P. Poncharal, Z.L. Wang, et al., Science 280 (1998) 17441746.

[17] R.H. Baughman, A.A. Zakhidov, W.A. de Heer, Science 297 (2002) 787-792.

[18] C. Dechakiatkrai, J. Chen, C. Lynam, et al., J. Electrochem. Soc. 154 (2007) A407-A411.

[19] G.M. An, W.H. Ma, Z.Y. Sun, et al, Carbon, 45 (2007) 1795-1801.

[20] H. Wang, H.L. Wang, W.F. Jiang, Water Res. 43 (2009) 204-210.

[21] Y. Lin, C. Ferronato, N. Deng, et al., Appl. Catal. B 88 (2009) 32-41.

[22] Z. Song, J. Hrbek, R. Osgood, Nano Lett. 5(2005) 1327-1332.

[23] H. Yu, X. Quan, S. Chen, et al., J. Phys. Chem. C 111 (2007) 12987-12991.

[24] A. Kongkanand, P.V. Kamat, ACS Nano 1 (2007) 13-21.