Development of Enzyme-based Electrodes Using Three-Dimensional CNTs/G Hybrid Films

2016 Fiscal Year Final Research Report

• Project/Area Number: 26790011
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Nanomaterials chemistry
• Research Institution: The University of Tokyo
• Principal Investigator: Komori Kikuo 東京大学, 大学院工学系研究科(工学部), 助教 (60431813)
• Research Collaborator: Mulchandani Ashok カリフォルニア大学リバーサイド校, 教授
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: ナノ炭素材料 / カーボンナノチューブ / グラフェン / ハイブリッドフィルム / バイオセンシング / 酵素電極 / 直接電子移動

Outline of Final Research Achievements

Graphene is well-known to be a two-dimensional thin layer with very high conductivity and very large specific surface area, but its effective surface area depends on a planar/footprint area of a substrate in general. In order to enhance the surface area per unit planar/footprint area, we used seamless three-dimensional carbon nanotubes-grown graphene (CNTs/G). Here, we developed CNTs/G electrodes modified with biocatalyst, such as horseradish peroxidase, heme peptide, and hemin, for highly sensitive electrochemical biosensors to hydrogen peroxide. Compared with graphene electrodes modified with biocatalysts, cathodic currents of H2O2 for the CNTs/G electrode modified with biocatalysts increased due to increase in the amount of biocatalysts. Thus, the CNTs/G film would be useful not only for electrochemical biosensors but also for enzyme-based biofuel cells.

Free Research Field

バイオデバイス工学