Influence of annealing temperature on structural, optical and photocatalytic properties of ZnO–TiO2​ composites for application in dye removal in water

Munguti, Lawrence K.; Dejene, Francis

dc.contributor.author	Munguti, Lawrence K.
dc.contributor.author	Dejene, Francis
dc.date.accessioned	2021-07-28T08:02:11Z
dc.date.available	2021-07-28T08:02:11Z
dc.date.issued	2020-10
dc.identifier.citation	Nano-Structures & Nano-Objects, Volume 24	en_US
dc.identifier.uri	https://www.sciencedirect.com/science/article/pii/S2352507X20300937
dc.identifier.uri	http://repository.seku.ac.ke/handle/123456789/6303
dc.description	DOI: https://doi.org/10.1016/j.nanoso.2020.100594	en_US
dc.description.abstract	Optimized ratios Zn:Ti (1:1) of ZnO–TiO2 nanocomposites synthesized via the sol–gel method were annealed at; 500 °C, 600 °C, 700 °C, 800 °C and 900 °C. The structural, morphological thermal, optical and chemical changes provoked by thermal treatment at different temperatures were characterized by XRD, SEM/TEM, TGA, DRS and FTIR respectively. The effect of annealing temperature was studied by photocatalytic degradation of methylene blue dye in UV light. XRD revealed mixed phases with high crystallinity whereas SEM images had different particle morphologies for the samples annealed at different temperatures. The photodegradation reported the highest rate for samples annealed at 700 °C which was attributed to the ZnTiO3 phase, increased crystallite growth and reduced band gap with annealing temperatures.	en_US
dc.language.iso	en	en_US
dc.publisher	Elsevier	en_US
dc.subject	Annealing temperature	en_US
dc.subject	ZnO–TiO2 composites	en_US
dc.subject	Photocatalytic	en_US
dc.title	Influence of annealing temperature on structural, optical and photocatalytic properties of ZnO–TiO2 composites for application in dye removal in water	en_US
dc.type	Article	en_US