Novel meta- and AB-Polybenzimidazole/Zinc oxide polymer hybrid nanomaterials for photocatalytic degradation of organic dyes

[Display omitted] •Novel Polybenzimidazole/ZnO hybrid nanocomposite materials were prepared.•New approach with alkali-ethanol AB-PBI solution was used for in situ synthesis of ZnO.•The highest degradation of tested dyes was achieved with m-PBI/2.5 wt% ZnO powder.•The novel hybrid powders demonstrate...

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Bibliographic Details
Published in:Materials letters 2018-11, Vol.230, p.187-190
Main Authors: Penchev, Hristo, Zaharieva, Katerina, Milenova, Katya, Ublekov, Filip, Dimova, Silvia, Budurova, Dessislava, Staneva, Maya, Stambolova, Irina, Sinigersky, Vesselin, Blaskov, Vladimir
Format: Article
Language:English
Subjects:
Catalytic activity
Degradation of dyes
Dyes
Ethanol
Malachite green
Materials science
Nanocomposites
Nanomaterials
Nanoparticles
Photocatalysis
Photocatalyst
Photodegradation
Pollutants
Polybenzimidazoles
Polymer hybrid nanocomposites
Ultraviolet radiation
Zinc oxide
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Summary:[Display omitted] •Novel Polybenzimidazole/ZnO hybrid nanocomposite materials were prepared.•New approach with alkali-ethanol AB-PBI solution was used for in situ synthesis of ZnO.•The highest degradation of tested dyes was achieved with m-PBI/2.5 wt% ZnO powder.•The novel hybrid powders demonstrate higher photocatalytic activity than the films. New nanocomposites of m-PBI/ZnO and AB-PBI/ZnO – powders and films, containing 2.5 wt% and 5 wt% ZnO, were prepared using two different approaches: mixing commercial ZnO nanoparticles with dimethylacetamide solution of m-PBI and in situ synthesis of ZnO in alkali-ethanol AB-PBI solution. The photocatalytic activity of the materials prepared was tested for photodegradation under UV-light of model organic dyes pollutants, in aqueous media. The powder catalysts exhibit higher photocatalytic efficiency towards degradation of all three tested dyes, compared to the films. The materials containing 2.5 wt% ZnO are usually more efficient than these with 5 wt% ZnO. The highest degree of degradation (97%) was achieved for Malachite Green dye, using m-PBI/2.5 wt% ZnO powder.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2018.07.114