Non-enzymatic electrochemical glucose sensor based on platinum nanoflowers supported on graphene oxide

► PtNFs-GO was synthesized using a nontoxic, one-pot and template-free method. ► PtNFs-GO modified electrode exhibited a rapid response to glucose (within 5 s). ► Modified electrode retains sensitivity in the presence of chloride ions. ► Broad linear concentration range from 2 μM to 20.3 mM and low LOD of 2 μM.