Effect of APTES Percentage towards Reduced Graphene Oxide Screen Printed Electrode Surface for Biosensor Application
| Autor: | Nurul Azurin Badruzaman, Fatihatul Zuriati Makmon, Mohd Azraie Mohd Azmi, Nur Azura Mohd Said, Suhaili Sabdin, Azman Abd Aziz |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Working electrode Materials science Graphene Oxide 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences law.invention chemistry.chemical_compound Electron transfer chemistry Chemical engineering law Silanization 0103 physical sciences Surface modification 0210 nano-technology Layer (electronics) Biosensor |
| Zdroj: | Materials Today: Proceedings. 19:1183-1188 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2019.11.121 |
| Popis: | Graphene and its derivatives are popular material nowadays among researchers due to its interesting mechanical, electronic and structural properties. Although pristine graphene have high electrical conductivity, some biosensor application require modified form of graphene such as graphene oxide or reduced graphene oxide because easier attachment of linker due to their oxide layer availability. Common functionalization method is using APTES as a linker that attach to working electrode of screen printed electrode. Certain percentage of APTES will then bind with targeted biomarker. Here, silanization of 2%, 4%, 6%, 8% and 10% APTES were conducted on the surface of reduced graphene oxide screen printed electrode to study the effect of APTES percentage towards reduced graphene oxide surface for stable biosensor platform. The 2% APTES shows stable current result of 0.111µA and potential of 0.18V at 100mV/s. This result significant for concentration to surface area ratio whereby low concentration produced higher surface area and lower resistance for electron transfer. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect