Kinetic Study of the Visible Light-Induced Sonophotocatalytic Degradation of MB Solution in the Presence of Fe/TiO2-MWCNT Catalyst

다국어 초록 (Multilingual Abstract)

In order to effective degradation of organic dye both under visible light or ultrasonic irradiation, the MWCNTs (multiwalled carbon nanotube) deposited with Fe and TiO2 were prepared by a modified sol-gel method. The Fe/TiO2-MWCNT catalyst was characterized by surface area of BET, scanning electron microscope (SEM), Transmission Electron Microscope (TEM), X-ray diffraction (XRD), and energy dispersive X-ray (EDX) and ultraviolet-visible (UV-vis)spectroscopy. The low intensity visible light and low power ultrasound was as an irradiation source and the methylene blue (MB) was choose as the model organic dye. Then degradation experiments were carried out in present of undoped TiO2, Fe/TiO2 and Fe/TiO2-MWCNT catalysts. Through the degradation of MB solution, the results showed the feasible and potential use of Fe/TiO2-MWCNT catalyst under visible light and ultrasonic irradiation due to the enhanced formation of reactive radicals as well as the possible visible light and the increase of ultrasound-induced active surface area of the catalyst. After addition of H2O2, the MB degradation rates have been accelerated, especially with Fe/TiO2-MWCNT catalyst, in case of that the photo-Fenton reaction occurred. The sonophotocatalysis was always faster than the respective individual processes due to the more formation of reactive radicals as well as the increase of the active surface area of Fe/TiO2-MWCNT catalyst.

참고문헌 (Reference)

1 Berlan, J., 1 : 97-, 1994

2 Tu, Y. F., 45 : 224-, 2010

3 Suslick, K. S., 260 : 80-, 1989

4 Makino, K., 87 : 1369-, 1983

5 Serpone, N., 20 : 635-, 1994

6 Riesz, P., 64 : 233-, 1985

7 Silva, C. G., 155 : 133-, 2003

8 Han, W., 90 : 319-, 2004

9 Han, W., 38 : 4197-, 2004

10 He, D. M., 9 : 2467-, 2007

11 Zhang, X. W., 91 : 73-, 2005

12 Feng, J., 98 : 441-, 2004

13 Wang, W. D., 56 : 305-, 2005

14 Ohno, T., 265 : 115-, 2004

15 Tryba, B., 151 : 623-, 2008

16 Yang, X., 252 : 296-, 2007

17 Teoh, W. Y., 120 : 203-, 2007

18 Wang, W. D., 235 : 194-, 2005

19 Tuziuti, T., 42 : 597-, 2004

20 Wang, J., 170 : 398-, 2009

21 Wang, J., 320 : 202-, 2008

22 Berberidou, C., 74 : 63-, 2007

23 Yano, J., 12 : 197-, 2005

24 Gogate, P. R., 6 : 335-, 2002

25 Shimizu, N., 14 : 184-, 2007

26 Mrowetz, M., 10 : 247-, 2003

27 Tryba, B., 64 : 1225-, 2006

28 Rincón, A. G., 63 : 222-, 2006

29 Wang, J., 195 : 294-, 2006

30 Hung, W. C., 255 : 2205-, 2008

31 Chen, L. C., 54 : 3884-, 2009

32 Wu, K. Q., 144 : 77-, 1999

33 Kan Zhang, "The Photocatalytic Decomposition of Different Organic Dyes under UV Irradiation with and without H₂O₂ on Fe-ACF/TiO₂ Photocatalysts" 한국세라믹학회 46 (46): 561-567, 2009

34 오원춘, "Synthesis and Characterization of CNT/TiO2 Composites Thermally Derivedfrom MWCNT and Titanium(IV) n-Butoxide" 대한화학회 29 (29): 159-164, 2008

35 오원춘, "Fabrication of Fe-ACF/TiO2 composites and their photonic activity for organic dye" 한국분석과학회 22 (22): 254-262, 2009

36 Kan Zhang, "Characterization of Methylene Blue Decomposition on Fe-ACF/TiO2 Photocatalysts Under UV Irradiation with or Without H2O2" 한국재료학회 19 (19): 481-487, 2009

37 Won-Chun Oh, "Characterization and relative photonic efficiencies of a new Fe-ACF/TiO2 composite photocatalysts designed for organic dye decomposition" 한국공업화학회 15 (15): 190-195, 2009