Original scientific paper
https://doi.org/10.15255/CABEQ.2015.2222
Efficient Photocatalytic Hydrogen Evolution by Iron Platinum Loaded Reduced Graphene Oxide
S. E. Moradi
orcid.org/0000-0002-6729-5646
; Young Researchers and Elite Club, Islamic Azad University-Sari Branch, Sari, Iran
Abstract
In this work, graphene oxide (GO) was prepared by the Hummers method from natural graphite, and modified with iron and platinum nanoparticles by the solvothermal method. The structural order and textural properties of the grapheme-based materials were studied by BET, TEM, XRD, TG-DTA, and XPS techniques. UV−Vis diffuse reflectance spectra indicate the band gap for FePt and FePt-rGO composites to be 3.2 and 2.8 eV, respectively. FePt-rGO showed a hydrogen generation rate higher than that of the FePt nanoparticles. A detailed study of Pt effect on the photocatalytic H2 production rates showed that Pt NPs could act as an effective co-catalyst, enhancing photocatalytic activity of FePt-rGO. The FePt-rGO gave a H2 production rate of 125 μmol g–1 h–1. This is ascribed to the presence of Pt NPs (acting as electron sinks) and graphene oxide (as an electron collector and transporter) in FePt-rGO composites.
Keywords
hydrogen evolution; reduced graphene oxide; photocatalysis; platinum nanoparticle; iron nanoparticle
Hrčak ID:
155608
URI
Publication date:
13.4.2016.
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