| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Bio-Nano Interfaces and Engineering Applications
|
| Presentation Title |
Analysis of Direct Electron Transfer of Glucose Oxidase on Graphene-CNT Composite Surfaces via Molecular Dynamics and Electrochemical Experiments |
| Author(s) |
Taeyoung Yoon |
| On-Site Speaker (Planned) |
Taeyoung Yoon |
| Abstract Scope |
Graphene and its variants are excellent for enzymatic interfaces due to their electrical properties. Direct electron transfer of glucose oxidase on electrodes is crucial for enzyme-based bioelectrodes, but studies on pristine graphene interfaces with other carbon materials are limited. Carbon-based enzyme electrodes are favored for their low cost and ease of production. This study uses molecular dynamics simulations to examine a single-walled carbon nanotube/graphene enzyme interface at the atomic level. The enzyme morphology was visualized using an elastic network model and normal-mode analysis. Single carbon electrodes showed inferior electrical characteristics compared to enzyme composites. The composite interface exhibited 4.61- and 2.45-fold higher electron efficiencies than glucose oxidase with single-carbon nanotubes and graphene, respectively. This suggests that pristine graphene and carbon-nanotube–graphene composites offer efficient, low-cost electrode structures for enzyme-based biofuel cells. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Composites, Computational Materials Science & Engineering |