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چکیده
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polyoxometalate (POM) anions represent a large class of inorganic compounds that, because of their topological and electronic versatilities, have found applications in fields as diverse as catalysis, biology, medicine, and materials science.(1) The POMs exhibit the unique structure and redox properties, which could serve as ideal candidates for electrochemical applications.(2) Due to the fact that the POM salts have negligible conductivity, they are unsuitable for direct use in electroctalysis, storage and conversion of energy.(3) An approach for solving these problems is to attach POMs nanostructures directly on carbon based conductive materials through covalent or non-covalent interactions.(4) However, preparation of nanocomposites consisting of nanopolyoxometalate and nanocarbon based substrates such as graphite, carbon nanotube, and graphene with direct covalent bonding between its components is still a challenge in this research field. In this work, we report the use of amine-modified graphenes for the synthesis of covalent attachment and highly dispersed nanopolyoxometalates on graphene nanosheets. The nanocomposites were characterized by several techniques including Fourier transform infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), scanning electron microscopy (SEM).
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