Title: Effect of graphene oxide loading in GO/SiO₂/Ag/AgCl photocatalyst

Authors: Henrika Granbohm; Vivek K. Singh; Yanling Ge; Simo-Pekka Hannula

Addresses: Department of Materials Science and Engineering, Aalto University School of Chemical Technology, P.O. Box 16200, FI-00076, Aalto, Finland ' Department of Materials Science and Engineering, Aalto University School of Chemical Technology, P.O. Box 16200, FI-00076, Aalto, Finland ' Department of Materials Science and Engineering, Aalto University School of Chemical Technology, P.O. Box 16200, FI-00076, Aalto, Finland ' Department of Materials Science and Engineering, Aalto University School of Chemical Technology, P.O. Box 16200, FI-00076, Aalto, Finland

Abstract: In the presented work, Ag/AgCl decorated silica nanoparticles were introduced over graphene oxide (GO) sheets to prepare GO/SiO₂/Ag/AgCl nanocomposite powders for absorption and photocatalytic application. Nanocomposite powders were synthesised by sol-gel method and then characterised by various analytical techniques including X-ray diffraction (XRD), scanning electron microscopy and transmission electron microscopy. The amount of GO in nanocomposites was varied from 1 wt.% to 50 wt.% to investigate the role of graphene oxide on the absorption and photocatalytic properties of the nanocomposites. The photocatalytic activity of the GO/SiO₂/Ag/AgCl nanocomposites was examined under UV light taking methylene blue (MB) as a model dye.

Keywords: photocatalysis; adsorption; UV light; graphene oxide; silver chloride; nanocomposites; nanotechnology; silica nanoparticles; sol-gel.

DOI: 10.1504/IJNT.2017.082448

International Journal of Nanotechnology, 2017 Vol.14 No.1/2/3/4/5/6, pp.87 - 99

Published online: 24 Feb 2017 *

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