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.



A novel green approach based on ZnO nanoparticles and polysaccharides for photocatalytic performance

Author affiliations

Abstract

Novel green photocatalysts based on ZnO in the presence of arabic gum (AGZ) or karaya gum (KGZ) were synthesized by a sol–gel method for photocatalytic performance. The materials were characterized by XRD, FTIR spectroscopy, SEM, nitrogen adsorption/desorption, and PL and diffuse reflectance spectroscopy. Photocatalytic test was performed using methylene blue (MB) dye as the target pollutant under visible light. The reuse of photocatalysts and Artemia saline bioassays were investigated. The ZnO nanoparticles showed a hexagonal structure and the values of the band gaps were 2.95 (AGZ) and 2.98 eV (KGZ). The PL results demonstrated emission bands at 440, 473 or 478 and 549 nm. The textural properties indicated the presence of typically mesoporous materials. The MB discoloration efficiency was 81.5% and 91.0% for AGZ and KGZ, respectively. The photocatalytic activity of AGZ and KGZ was maintained after the third run. The ˙OH radicals are the main species involved in the MB discoloration. The MB discoloration from the photocatalysts showed no toxicity; therefore, they are considered to be promising materials for the degradation of the dye in the photocatalytic process.

Graphical abstract: A novel green approach based on ZnO nanoparticles and polysaccharides for photocatalytic performance

Back to tab navigation

Supplementary files

Article information


Submitted
25 Mar 2020
Accepted
22 May 2020
First published
01 Jun 2020

Dalton Trans., 2020, Advance Article
Article type
Paper

A novel green approach based on ZnO nanoparticles and polysaccharides for photocatalytic performance

F. P. Araujo, P. Trigueiro, L. M. C. Honório, M. B. Furtini, D. M. Oliveira, L. C. Almeida, R. R. P. Garcia, B. C. Viana, E. C. Silva-Filho and J. A. Osajima, Dalton Trans., 2020, Advance Article , DOI: 10.1039/D0DT01128B

Social activity

Search articles by author

Spotlight

Advertisements