Sodium dodecyl benzene sulfonate functionalized graphene for confined electrochemical growth of metal/oxide nanocomposites for sensing application

► Highly stable GR dispersion was achieved by SDBS non-covalent functionalization. ► High charge density of SDBS/GR confined growth of CuOCu nanocatalysts. ► SDBS/GR/CuOCu displayed ultrafast and sensitive current response toward fructose.