화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.22, 390-395, February, 2015
DOI10.1016/j.jiec.2014.07.037  Export Citation
Visible light photocatalytic degradation of cyanide using Au.TiO2/multi-walled carbon nanotube nanocomposites
R.M. Mohamed1, 2, †, and I.A. Mkhalid1, 3
  • 1Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia
  • 2Nanostructured Material Division Advanced Materials Department, Central Metallurgical R&D Institute, Helwan, 11421 Cairo, Egypt
  • 3, Saudi Arabia
E-mail:
Au-TiO2 nanocatalyst-supported multi-walled carbon nanotubes were effectively prepared by the sol-gel modified technique. The Au.TiO2/MWCNT nanocomposite was used to remove cyanide by photocatalytic oxidation under visible light irradiation. The Au.TiO2/MWCNT nanocomposite photocatalyst was characterized by XRD, TEM, UV.vis, and BET techniques. Results revealed the nanoparticles TiO2 and Au were well dispersed into MWCNT. Addition of Au and MWCNT can eliminate recombination pairs of electron holes in the Au.TiO2/MWCNT nanocomposite. Also, the presence of the MWCNT in the Au.TiO2/MWCNT nanocomposite transfers absorption of TiO2 from the UV region to visible region of the spectrum. The optimumweight ratio of MWCNTs:TiO2:Au was 0.06:1.0:0.10, which resulted in experimental performance photocatalyst oxidation of about 100% of the cyanide in a solution of 100 mg/L over 40 min, with 1.2 g/L of catalyst used.
Keywords:MWCNT;TiO2;Au doping;Visible photocatalyst
  1. Khalid NR, Ahmed E, Hong Z, Ahmad M, Zhang Y, Khalid S, Ceram. Int., 39, 7107 (2013)
  2. Wei P, Liu J, Li Z, Ceram. Int., 39, 5387 (2013)
  3. Matsui H, Ohkura N, Karuppuchamy S, Yoshihara M, Ceram. Int., 39, 5827 (2013)
  4. Mohamed RM, Baeissa ES, J. Alloy. Compd., 558, 68 (2013)
  5. Mohamed RM, Aazam ES, Chin. J. Catal., 33, 247 (2012)
  6. Mohamed RM, Desalin. Water Treat., 50, 147 (2012)
  7. Mohamed RM, McKinney DL, Sigmund WM, Mater. Sci. Eng. R-Rep., 73, 1 (2012)
  8. Mohamed RM, Mohamed MM, Appl. Catal. A: Gen., 340(1), 16 (2008)
  9. Shen YD, Foong TRB, Hu X, Appl. Catal. A: Gen., 409, 87 (2011)
  10. Mohamed RM, Aazam ES, Appl. Catal. A: Gen., 480, 100 (2014)
  11. Mohamed RM, Aazam E, Chin. J. Catal., 34, 1267 (2013)
  12. Mohamed RM, Aazam E, J. Alloy. Compd., 595, 8 (2014)
  13. Mohamed RM, Aazam ES, J. Alloy. Compd., 509, 10132 (2011)
  14. Mohamed RM, Aazam ES, Int. J. Photoenergy, Article ID 137328, 7 (2010)
  15. Mohamed RM, Mkhalid IA, J. Alloy. Compd., 501, 143 (2010)
  16. Mohamed RM, Mkhalid IA, J. Alloy. Compd., 501, 301 (2010)
  17. Liu H, Dong X, Duan C, Su X, Zhu Z, Ceram. Int., 39, 789 (2013)
  18. Zhang C, Ai L, Li L, Jiang J, J. Alloy. Compd., 582, 576 (2014)
  19. Iliev V, Tomova D, Rakovsky S, Eliyas A, Puma GL, J. Mol. Catal. A-Chem., 327(1-2), 51 (2010)
  20. Ouyang K, Xie S, Ma X, Ceram. Int., 39, 7531 (2013)
  21. Miranda SM, Romanos GE, Likodimos V, Marques RRN, Favvas EP, Katsaros FK, Stefanopoulos KL, Vilar VJP, Faria JL, Falaras P, Silva AMT, Appl. Catal. B: Environ., 147, 65 (2014)
  22. Da Dalt S, Alves AK, Bergmann CP, Mater. Res. Bull., 48(5), 1845 (2013)
  23. Liu CW, Chen HB, Dai K, Xue AF, Chen H, Huang QY, Mater. Res. Bull., 48(4), 1499 (2013)
  24. Zhu PN, Nair AS, Yang SY, Ramakrishna S, Mater. Res. Bull., 46(4), 588 (2011)
  25. Zhou W, Pan K, Qu Y, Sun F, Tian C, Ren Z, Tian G, Fu H, Chemosphere, 81, 555 (2010)