Photocatalytic Degradation of Indigo Carmine by ZnO-Cu₂O/Graphene Oxide Composites Synthesized via Hydrothermal Method

Abstract:

In this work, ZnO–Cu2O/graphene oxide (GO) composites have been synthesized by using simple hydrothermal method. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) were used to characterize the crystal structure and composite elements. The photocatalytic activity of the composites has been conducted by measuring the degradation of indigo carmine under UV irradiation. When the atom ratio of Zn/Cu is 5/2, 120 °C of hydrothermal synthesis temperature and 20 h of synthesis time, the ZnO/Cu2O/GO composite exhibits good photocatalytic activity with 96.5% degradation rate of indigo carmine aqueous solution under 500 W high pressure Hg lamp irradiation for 240 min.

• Periodical: Advanced Materials Research (Volume 668)
• Pages: 105-109
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.668.105
• Online since: March 2013
• Authors: Huai Di Wu, Lu Sheng Chen, Jin Chao Hu
• Keywords: Cuprous Oxide, Graphene Oxide, Indigo Carmine, Photocatalyst, Zinc Oxide (ZnO)

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