Enhanced desulfurization performance and stability of Pebax membrane by incorporating Cu+ and Fe2+ ions co-impregnated carbon nitride

We herein report an electrochemical biosensor for highly sensitive and selective detection of ATP and adenosine deaminase activity using functionalized grapheme as efficient electrochemical label. The specific binding of ATP and its aptamer can link the split aptamer modified grapheme and magnetic beads together. After enzyme catalysis and magnetic separation, grapheme material anchored on surface would efficiently facilitate electron transfer acting as electrochemical label, thus produce amplified electrochemical signals. Our work would will shed lights on new diagnostic applications of graphene, such as the design of biodevices for detection of other biomolecules DNA, protein, even cancer cells.225