Addressed herein, thiourea functionalized graphene oxide-based PtRu
nanocatalysts (PtRu@T/GO) has been synthesized and characterized by several
techniques and performed for methanol oxidation reactions as novel catalysts. In
this study, graphene oxide (GO) was functionalized with thiourea (T/GO) in order to
obtain monothiol functionalized graphene and increase the stability and activity of
the nanocatalysts. Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), X-ray
diffraction (XRD), TEM (transmission electron microscopy) and high-resolution
transmission electron microscopy (HR-TEM) were used for characterization of the
prepared nanocatalysts. The results obtained from these techniques showed that the
prepared nanocatalysts were in a highly crystalline form, well dispersed on T/GO,
very small in size and colloidally stable. The average size of the synthesized
nanocatalysts determined by TEM analysis was found to be 3.86 ± 0.59 nm. With HR-TEM
analysis, the atomic lattice fringes of the nanocatalysts were calculated to be
0.23 nm. After the full characterization of the prepared nanocatalysts, they were
tried for the methanol oxidation reaction (MOR) and it was observed that 97.3% of
the initial performance was maintained even after 1000 cycles while exhibiting great
catalytic activity and stability with the help of T/GO. Thus, the arranged
nanocatalysts displayed great heterogeneous catalyst characteristics for the
methanol oxidation response.