Synthesis of a ternary Ag/RGO/ZnO nanocomposite via microwave irradiation and its application for the degradation of Rhodamine B under visible light

被引：0
作者：
Divya Kollikkara Surendran
Marilyn Mary Xavier
Vandana Parakkal Viswanathan
Suresh Mathew
机构：
[1] Mahatma Gandhi University,School of Chemical Sciences
[2] Mahatma Gandhi University,Advanced Molecular Materials Research Centre
来源：
Environmental Science and Pollution Research | 2017年 / 24卷
关键词：
Rhodamine B; Visible light; Photocatalysis; Microwave irradiation; Plasmonic photocatalyst;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Reduced graphene oxide supporting plasmonic photocatalyst (Ag) on ZnO has been synthesized via a facile two-step microwave synthesis using RGO/ZnO and AgNO3. First step involves fabrication of RGO/ZnO via microwave irradiation. The nanocomposites were characterized by X-ray diffraction analysis, transmission electron microscopy, Fourier transform infrared spectroscopy, and Raman spectroscopy. Ag/RGO/ZnO shows enhanced photoactivity under visible light for the degradation of Rhodamine B. Enhanced charge separation and migration have been assigned using UV-vis diffuse reflectance spectra, photoluminescence spectra, electrochemical impedance spectra, and TCSPC analysis. The improved photoactivity of Ag/RGO/ZnO can be ascribed to the prolonged lifetime of photogenerated electron–hole pairs and effective interfacial hybridization between RGO and Ag with ZnO nanoparticles. Ag nanoparticles can absorb visible light via surface plasmon resonance to enhance photocatalytic activity.
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页码：15360 / 15368
页数：8
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