International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2560

Full Length Research Paper

Novel nano photocatalyst for the degradation of sky blue 5b textile dye

Zulfiqar Ali1,2, Syed Tajammul Hussain2, Muhammad Nawaz Chaudhry1, Syeda Adila Batool3, and Tariq Mahmood2*
1College of Earth and Environmental Sciences, University of the Punjab, Lahore, Pakistan. 2Nano Science and Catalysis Division, National Centre for Physics, Islamabad, Pakistan. 3Department of Space Science Punjab University Lahore, Pakistan
Email: [email protected]

  •  Accepted: 10 June 2013
  •  Published: 16 June 2013


A new Nano photocatalyst, CuO-Al2O3-ZrO2-TiO2 was synthesized by co-precipitation for the removal of textile dye under ultra violet and direct sunlight. The synthesized catalyst was characterized by using X-rays diffraction, X-rays fluorescent, thermo gravimetric analysis, DRS, scanning electron microscopy and EDX. The dopants reduced the recombination of ecb- and hvb+ and decreased the band gap of TiO2 from 3.25eV to 1.38eV. Due to this change, light absorption increased under sun light. The photocatalytic activity of the degraded samples of direct sky blue5B was analyzed by UV/Visible spectrophotometer. The results showed an enhanced photocatalytic activity under sun light about 96.8% in time duration of 100 min. It was also found that the degraded samples followed the pseudo first order kinetic model. This technique is cheap, easy and novel for the treatment of textile industrial waste water. In present energy crises of the world it can replace old expensive technologies.


Key words: Nano photocatalysis, direct sky blue5B, photocatalytic degradation, textile dyes, nano catalytic characterization.