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HomeKey Engineering MaterialsKey Engineering Materials Vol. 931ZnO/g-C3N4/Fe3O4 Nanocomposites Embedded Sa-PVA as...

ZnO/g-C₃N₄/Fe₃O₄ Nanocomposites Embedded Sa-PVA as Photocatalyst Hydrogel Beads for Photodegradation

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Abstract:

In this research, Fe₃O₄ NPs and g-C₃N₄ nanosheets were synthesized by co-precipitation and the thermal decomposition method, respectively. The ZnO/g-C₃N₄/Fe₃O₄ nanocomposites (ZGF) with the varying weight sight of Fe₃O₄ NPs were 0.5 (0.5ZGF), 1.25 (1.25ZGF), 2.5 (2.5ZGF), and 5.0 (5.0ZGF) wt%, which were synthesized by a facile method. Synthesized Fe₃O₄ NPs, g-C3N4 nanosheets, and ZGF nanocomposite were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), and transmission electron microscopy (TEM). Then ZGF nanocomposites were contained on sodium alginate-polyvinyl alcohol (SA-PVA) as hydrogel packing material. Kinetics of photocatalytic activity and adsorption were studied by first-order reaction, second-order reaction, the pseudo-first-order, the pseudo-second-order, Elovich, and Avrami models. Especially, the photocatalytic activity and adsorption process of ZGF-SA-PVA composite hydrogel beads have been represented via Methylene Blue removal. The photodegradation efficiency of 2.5ZGF-SA-PVA composite hydrogel beads under visible light irradiation is increased by over 2 times, to be much higher than that of SA-PVA hydrogel beads. The results show that the organic removal efficiency of the SA-PVA hydrogel bead can be effectively improved by the ZGF nanocomposite.

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Periodical:

Key Engineering Materials (Volume 931)

Pages:

99-107

DOI:

https://doi.org/10.4028/p-b2812s

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Online since:

September 2022

Authors:

Busara Pattanasiri, Suntree Sangjan*

Keywords:

Alginate, Composite, Fe₃O₄ NPs, g-C₃N₄ Nanosheets, Photocatalytic, Polyvinyl Alcohol (PVA)

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© 2022 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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