▎ 摘　　要

NOVELTY - Solid ionophore is a nanocomposite formed by compounding conductive polymer nanoparticles rich in functional groups and graphene nanosheets. USE - Solid ionophore for preparing sensing membrane or an ion selective electrode for sensing lead ions (claimed). ADVANTAGE - The active functional groups in the ionophore are more easily exposed, and the complexing sites of the solid carrier are increased. Graphene can endow the ionophore with the electronic conduction and ion conduction capabilities and the conversion between the two, which solves the current problem of difficult electrical signal transmission in all solid-state sensing membranes. The synergy between the two makes the sensing membrane have a fast and stable signal response. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing solid ionophore, which involves subjecting graphene nanosheets, conductive polymer monomers, and conductive polymer monomers containing multiple functional groups to chemical oxidation polymerization, and forming conductive polymer monomers and conductive polymer monomers containing multiple functional groups polymerized in situ on the graphene nanosheets; and forming a nanocomposite composed of conductive polymer nanoparticles rich in functional groups and graphene nanosheets, that is, solid ion carrier.