In-situ synthesis of visible-light responsive Ag2O/graphene oxide nanocomposites and effect of graphene oxide content on its photocatalytic activity

Ag 2 O/graphene oxide nanocomposites, as efficient photocatalysts, were prepared by an in situ method using AgNO 3 and graphene oxide as reactants under controlled atmosphere. Graphene oxide is synthesised via an eco-friendly method, and the Ag 2 O nanoparticles displaying elongated spherical morpho...

Full description

Saved in:
Bibliographic Details
Published in:Advanced composites and hybrid materials 2018-06, Vol.1 (2), p.374-388
Main Authors: Ahmad, Jahangir, Majid, Kowsar
Format: Article
Language:English
Subjects:
Ceramics
Chemistry and Materials Science
Composites
Glass
Materials Engineering
Materials Science
Natural Materials
Original Research
Polymer Sciences
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Ag 2 O/graphene oxide nanocomposites, as efficient photocatalysts, were prepared by an in situ method using AgNO 3 and graphene oxide as reactants under controlled atmosphere. Graphene oxide is synthesised via an eco-friendly method, and the Ag 2 O nanoparticles displaying elongated spherical morphology are randomly distributed on the surface of GO. The as-synthesised nanocomposites were characterised by different characterisation techniques. The results proved that the concentration of graphene oxide in starting solution displayed an important role in photocatalytic performance of Ag 2 O/graphene oxide nanocomposites. The nanocomposite materials were found to exhibit very improved photocatalytic activity for degrading methylene blue (MB) and Rhodamine B (Rh-B) under visible light irradiation. The photocatalytic activities of the composite were higher than that of P25 (a commercial TiO 2 as a benchmark photocatalyst). The significantly improved photocatalytic activity of the nanocomposites could be attributed to the high charge separation and suppressed recombination of photogenerated electron-hole pairs due to GO. The effects of reaction parameters such as pH and the effect of different scavengers on the photocatalytic activity of the composite were studied. Graphical abstract This reflects high charge separation of photogenerated charge carriers through graphene oxide and thus increased photocatalytic activity by Ag 2 O/GO composites.
ISSN:2522-0128
2522-0136
DOI:10.1007/s42114-018-0025-6