caa a22 4500 445880007 CHVBK 20180317145539.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s00604-011-0684-2 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0684-2 Carbon fiber microelectrodes modified with carbon nanotubes as a new support for immobilization of glucose oxidase [Elektronische Daten] [Hao Wen, Vijayadurga Nallathambi, Deboleena Chakraborty, Scott Calabrese Barton] Carboxylated carbon nanotubes were coated onto carbon microfiber electrodes to create a micron-scale bioelectrode. This material has a high surface area and can serve as a support for immobilization of enzymes such as glucose oxidase. A typical carbon nanotube loading of 13μgcm−1 yields a coating thickness of 17μm and a 2000-fold increase in surface capacitance. The modified electrode was further coated with a biocatalytic hydrogel composed of a conductive redox polymer, glucose oxidase, and a crosslinker to create a glucose bioelectrode. The current density on oxidation of glucose is 16.6mAcm−2 at 0.5V (vs. Ag/AgCl) in oxygen-free glucose solution. We consider this approach to be useful for designing and characterizing surface treatments for carbon mats and papers by mimicking their local microenvironment. Figure Carboxylated carbon nanotubes were coated on a carbon fiber microelectrode as a support for a glucose-oxidizing bioelectrode. Glucose oxidation current density increased linearly with nanotube surface area up to 16.6mAcm−2 at 0.5V (vs. Ag/AgCl) in oxygen-free glucose solution. Springer-Verlag, 2011 Electrocatalysis nationallicence Carbon fiber microelectrode nationallicence Carbon nanotube nationallicence Biofuel cells nationallicence Wen Hao Department of Chemical Engineering and Materials Science, Michigan State University, 48824, East Lansing, MI, USA aut Nallathambi Vijayadurga Department of Chemical Engineering and Materials Science, Michigan State University, 48824, East Lansing, MI, USA aut Chakraborty Deboleena Department of Chemical Engineering and Materials Science, Michigan State University, 48824, East Lansing, MI, USA aut Calabrese Barton Scott Department of Chemical Engineering and Materials Science, Michigan State University, 48824, East Lansing, MI, USA aut Microchimica Acta Springer Vienna 175/3-4(2011-12-01), 283-289 0026-3672 175:3-4<283 2011 175 604 https://doi.org/10.1007/s00604-011-0684-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0684-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wen Hao Department of Chemical Engineering and Materials Science, Michigan State University, 48824, East Lansing, MI, USA aut NATIONALLICENCE 700 1- Nallathambi Vijayadurga Department of Chemical Engineering and Materials Science, Michigan State University, 48824, East Lansing, MI, USA aut NATIONALLICENCE 700 1- Chakraborty Deboleena Department of Chemical Engineering and Materials Science, Michigan State University, 48824, East Lansing, MI, USA aut NATIONALLICENCE 700 1- Calabrese Barton Scott Department of Chemical Engineering and Materials Science, Michigan State University, 48824, East Lansing, MI, USA aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 175/3-4(2011-12-01), 283-289 0026-3672 175:3-4<283 2011 175 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer