Abstract
Simple nanoporous alumina matrix modification procedure, in which the electrically highly insulating alumina barrier layer at the bottom of the pores is replaced with the conductive layer of the gold beds, was described. This modification makes possible the direct electron exchange between the underlying aluminum support and the redox species encapsulated in the alumina pores, thus, providing the generic platform for the nanoporous alumina sensors (biosensors) with the direct amperometric signal readout fabrication.
Highlights
Porous anodic oxide films of aluminum anodically grown in the solutions of oxalic and/or sulfuric or phosphoric acids have been used for decades as protection and hard coatings or adhesive layers
Electronic supplementary material Supplementary material is available in the online version of this article at and is accessible for authorized users
We describe a simple nanoporous alumina matrix modification procedure, in which the electrically highly insulating barrier layer at the bottom of the pores is replaced with the gold beds
Summary
Porous anodic oxide films of aluminum anodically grown in the solutions of oxalic and/or sulfuric or phosphoric acids have been used for decades as protection and hard coatings or adhesive layers. The use of anodized aluminum electrodes as support for amperometric sensors is, unexplored due to high resistance of alumina a thin scalloped barrier-oxide layer separated the thick porous one from the metal [23] that is a key problem.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
