The nanoporous structure was prepared on the surface of the platinum microelectrode by electrochemical etching, and then graphene oxide was deposited on the prepared nanoporous electrode by electrochemical deposition.

纳米多孔结构通过刻蚀法在铂极表面制，利用沉积法将氧石墨烯沉积在制好的纳米多孔极上。