Photocatalytic Degradation of Organic Contaminants by BiVO4/Graphene Oxide Nanocomposite

Dang Trung Tri TRINH; Duangdao CHANNEI; Willawan KHANITCHAIDECHA; Auppatham NAKARUK

doi:10.48048/wjst.2018.5969

Authors

Dang Trung Tri TRINH Department of Civil Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000
Duangdao CHANNEI Department of Chemistry, Faculty of Science, Naresuan University, Phitsanulok 65000
Willawan KHANITCHAIDECHA Centre of Excellence for Innovation and Technology for Water Treatment, Faculty of Engineering, Naresuan University, Phitsanulok 65000
Auppatham NAKARUK Department of Industrial Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000

DOI:

https://doi.org/10.48048/wjst.2018.5969

Keywords:

BiVO4, Graphene oxide, photocatalysis, nanocomposite, visible light

Abstract

In the present work, a nanocomposite of bismuth vanadate (BiVO₄) and Graphene oxide (GO) was synthesized successfully by using hydrothermal process. The properties of BiVO₄/GO nanocomposite were examined by various techniques including X-ray diffraction (XRD) and transmission electron microscopy (TEM). The XRD data indicated that pure BiVO₄ nanoparticles had a monoclinic structure. Similarly, BiVO₄/GO nanocomposite had the same structure without the peak of GO due to the transmission from GO to reduced GO during hydrothermal process. TEM images revealed that BiVO₄ particles were integrated effectively with the GO sheets. The photocatalysis performance was evaluated by the degradation of methylene blue (MB) in an aqueous under the irradiation of visible light. The result showed that BiVO₄/GO nanocomposites had higher photocatalytic activity than pure BiVO₄ nanoparticles. The explanation was that GO sheets enhanced the separation of electron–hole pairs and the adsorbent capacity leading to improved photocatalytic activity.

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