Photocatalytic Activity of Graphene/ZnO Nanocomposite Fabricated by Two-step Electrochemical Route

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• 作者：A R NANAKKAL ; L K ALEXANDER
• 关键词：Graphene ; metal oxide ; nanocomposites ; electrochemistry ; photocatalysis ; water purification
• 刊名：Journal of Chemical Sciences
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：129
• 期：1
• 页码：95-102
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry/Food Science, general;
• 出版者：Springer India
• ISSN：0973-7103
• 卷排序：129

文摘

Graphene-Zinc oxide nanocomposite was synthesised by a novel, facile and environment-friendly two-step electrochemical route aimed at water purification by photocatalysis. The X-ray diffraction, Raman spectroscopy and electron microscopy demonstrate successful implementation of electrolytic route for the synthesis of graphene-metal oxide nanocomposite. UV-Visible diffuse reflectance spectroscopy and photoluminescence measurements were also used to characterise the samples. Based on this work, it is found that for the UV incident radiation, Graphene-ZnO nanocomposite shows an enhanced photocatalytic activity over ZnO. The photocatalytic activity of annealed graphene –ZnO was compared to a standard catalyst Degussa P25 TiO ₂. The electrochemical synthesis technique is envisioned to open a reliable, cost-effective and environment sensitive method to fabricate graphene-metal oxide nanocomposites which could lead to various applications especially for photocatalysis.