Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 5, 2009
Previous Article Next Article

Photocatalytic decolourization of dyes on NiO–ZnO nano-composites

Author affiliations

Abstract

NiOZnO nanocomposite photocatalysts were synthesized by co-precipitation/co-gel formation techniques using potassium hydroxide (KOH), sodium carbonate (Na2CO3) and oxalic acid (H2C2O4) as precipitating agents. X-Ray diffraction (XRD) analysis was employed for the determination of crystallite size and phase purity, while BET surface areas were estimated by nitrogen physisorption analysis. The photocatalytic activities of the NiOZnO nanocomposites, evaluated using the photo-decolourization of two structurally different dyes, methyl orange and methylene blue, were correlated with the variation in the crystallite size of the constituents of the composites. All the three synthesized nanocomposites showed appreciable activity for the decolourization of dyes. NiOZnO nanocomposite derived by KOH exhibited maximum activity for the decolourization of both the dyes and the decolourization rate of methylene blue was found to be comparable with that of Degussa P-25 TiO2. Finally, the activity of the most active NiOZnO composite with relatively large crystallite sizes was compared with the pure components and their physical mixture, synthesized by the identical synthetic route, in the same molar ratio as that of nanocomposite.

Graphical abstract: Photocatalytic decolourization of dyes on NiO–ZnO nano-composites

Back to tab navigation

Article information


Submitted
03 Oct 2008
Accepted
25 Feb 2009
First published
12 Mar 2009

Photochem. Photobiol. Sci., 2009,8, 677-682
Article type
Paper

Photocatalytic decolourization of dyes on NiOZnO nano-composites

A. Hameed, T. Montini, V. Gombac and P. Fornasiero, Photochem. Photobiol. Sci., 2009, 8, 677
DOI: 10.1039/B817396F

Social activity

Search articles by author

Spotlight

Advertisements