Fabrication of Nanoporous Copper Film for Electrochemical Detection of Glucose

A nanoporous copper film was fabricated oil a copper wire by electrodeposition of copper/zinc alloy and chemically etching of zinc. The surface morphology was investigated by SEM. When applied to detect glucose in an amperometric flow injection system the porous copper electrode provided 12 times higher sensitivity than solid copper. It could be continuously used LIP to 50 times (%RSD=5.7). Different preparations of the porous film provided reproducible responses (P < 0.05). Detection of glucose in E. coli cultivation medium compared well with spectrophotometric technique (P < 0.05). This simple technique can produce a nanoporous electrode with good performances and can easily be applied to other metals and analytes.