Transfer-free CVD graphene for highly sensitive glucose sensors
| Autor: | Chuan Xu, Lai-Peng Ma, Hao Yabin, Shijing Wei, You Zeng, Zhe Ying, Hui-Ming Cheng, Sen Xue, Wencai Ren, Qinwei Wei |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics 02 engineering and technology Chemical vapor deposition 010402 general chemistry Electrochemistry 01 natural sciences law.invention Metal chemistry.chemical_compound law Nafion Materials Chemistry Glucose oxidase Detection limit chemistry.chemical_classification biology business.industry Graphene Mechanical Engineering Metals and Alloys Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Mechanics of Materials visual_art Ceramics and Composites biology.protein visual_art.visual_art_medium Optoelectronics 0210 nano-technology business |
| Zdroj: | Journal of Materials Science & Technology. 37:71-76 |
| ISSN: | 1005-0302 |
| Popis: | Chemical vapor deposition (CVD) graphene film is a promising electrode-modifying material for fabricating high-performance glucose sensor due to its high electrical conductivity and two-dimensional structure over large area. However, the use of typical metal-based CVD graphene suffers from the residue contamination of polymer transfer-support and heavy metal ions. In this work, we directly grew few-layer graphene on the SiO2/Si substrate without transfer process and then fabricated graphene-based glucose sensors by sequentially immobilizing glucose oxidase and depositing Nafion layer on its surface that was functionalized by oxygen-plasma treatment. Our transfer- and metal-free process shows distinct advantage over the common metal-CVD method in improving the electrochemical performance by eliminating the contamination of transfer-residue. Thus-obtained glucose sensor shows a high sensitivity (16.16 μA mM−1 cm-2) with a detection limit of 124.19 μM. This method is simple and promising for the development of highly sensitive glucose sensors. |
| Databáze: | OpenAIRE |
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