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A sensor for the highly sensitive determination of Sudan I based on the amplified electrochemical response of mesoporous TiO2-decorated graphene (GN–TiO2) was fabricated. The nanoparticles of TiO2 arrayed densely and uniformly on the GN sheets, as confirmed by field emission scanning electron microscopy and transmission electron microscopy images. The electrochemical behavior of Sudan I at this sensor...
Ordered mesoporous TiO2, synthesized by soft template method, coupled with graphene was used to modify a carbon paste electrode. The graphene layer was very thin and the mesoporous TiO2 particles were nano-scale, as confirmed by scanning electron microscopy and transmission electron microscopy. Graphene and mesoporous TiO2 displayed remarkable enhancement effect and greatly increased the oxidation...
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