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Fabrication of Nanoporous Copper Film for Electrochemical Detection of Glucose
Author(s) -
Sattayasamitsathit Sirilak,
Thavarungkul Panote,
Thammakhet Chongdee,
Limbut Warakorn,
Numnuam Apon,
Buranachai Chitta,
Kanatharana Proespichaya
Publication year - 2009
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200904697
Subject(s) - nanoporous , copper , amperometry , materials science , zinc , electrode , fabrication , etching (microfabrication) , electrochemistry , porosity , alloy , copper plating , chemical engineering , metallurgy , nanotechnology , chemistry , composite material , electroplating , layer (electronics) , medicine , alternative medicine , pathology , engineering
A nanoporous copper film was fabricated on 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 up 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.