2024-03-28T22:50:39Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/425432022-11-17T02:08:08Zhdl_2115_20069hdl_2115_156Electrochemical Functionalization of InP Porous Nanostructures with a GOD Membrane for Amperometric Glucose SensorsSato, TaketomoMizohata, AkinoriHashizume, Tamotsubiochemistrybioelectric phenomenabiomembranesbiosensorselectrochemistryelectrodesIII-V semiconductorsindium compoundsmolecular biophysicsnanostructured materialsorganic compoundsporous semiconductors431The electrochemical functionalization of n-type InP porous nanostructures and their feasibility for biochemical sensor applications were investigated. The porous structures have extremely large surface areas, i.e., over 10 m2/cm3, and superior electrical properties with conductive semiconductor substrates. As a first attempt at electrochemical functionalization, we successfully deposited a glucose oxidase (GOD) membrane onto an InP surface under an applied anodic bias of 1.2 V. With the addition of glucose, the response currents on the porous electrodes increased compared to those on planar InP electrodes due to their enlarged surface area. The sensitivity curves of the porous electrodes we used showed good linearity between the response currents and concentrations in a range from 0 to 5 mM.The electrochemical functionalization of n-type InP porous nanostructures and their feasibility for biochemical sensor applications were investigated. The porous structures have extremely large surface areas, i.e., over 10 m2/cm3, and superior electrical properties with conductive semiconductor substrates. As a first attempt at electrochemical functionalization, we successfully deposited a glucose oxidase (GOD) membrane onto an InP surface under an applied anodic bias of 1.2 V. With the addition of glucose, the response currents on the porous electrodes increased compared to those on planar InP electrodes due to their enlarged surface area. The sensitivity curves of the porous electrodes we used showed good linearity between the response currents and concentrations in a range from 0 to 5 mM.Electrochemical SocietyJournal Articleapplication/pdfhttp://hdl.handle.net/2115/42543https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/42543/1/JES157_H165.pdf0013-4651AA00697016Journal of The Electrochemical Society1572H165H1692010enginfo:doi/10.1149/1.3264634© The Electrochemical Society, Inc. 2010. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in J. Electrochem. Soc., Volume 157, Issue 2, pp. H165-H169, 2010.publisher