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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Chu, Mingming Zhang, Xiaohui Zhang, Yue Liao, Qingliao Liu, Shuo |
| Description | Author Affiliation: Zhang X ( State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China.) |
| Abstract | Using structural characterizations and electrochemical measurements, we explored and investigated the effect of the structure of enzyme electrodes with glucose oxidase (GOD) that were modified by reduced graphene oxide (rGO) sheets. The rGO sheets with different defect density, layers, and oxygen concentrations were chosen to modify the enzyme electrode, and all the modified enzyme electrodes exhibited excellent electrocatalytic activities and performances towards glucose. The abundant defects in rGO induce easy absorption of GOD. At a low oxygen concentration, rGO sheets help to induce the direct electron transfer (DET) on the rGO-modified electrode, and at a higher oxygen concentration, the reduction of H2O2 occurred instead of DET on the surface of the rGO-modified electrode. When rGO modified the enzyme electrode under the working model of H2O2 reduction, an increase in the number of the oxygen functional groups could lead to an increase in the absorption of GOD, resulting in the improvement of the affinity and sensitivity of the biosensor. The rGO-modified enzyme electrode can provide faster response, higher sensitivity, and better affinity by optimizing and controlling the structure of graphene and its derivatives. |
| ISSN | 09565663 |
| Volume Number | 52 |
| e-ISSN | 18734235 |
| Journal | Biosensors and Bioelectronics |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-02-15 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Biosensing Techniques Methods Glucose Isolation & Purification Graphite Chemistry Electrochemistry Electrodes Enzymes, Immobilized Glucose Oxidase Hydrogen Peroxide Oxides Journal Article Research Support, Non-u.s. Gov't Discipline Biotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nanoscience and Nanotechnology Medicine Biophysics Biomedical Engineering Biotechnology Electrochemistry |
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