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Novel flexible bifunctional amperometric biosensor based on laser engraved porous graphene array electrodes: Highly sensitive electrochemical determination of hydrogen peroxide and glucose.
- Source :
-
Journal of Hazardous Materials . Jan2021, Vol. 402, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- • A simple and easy fabrication method for laser engraved porous graphene (LEPG). • Bi-functional H2O2 and glucose electrochemical sensor were designed based on GOD/Pt-LEPG. • The obtained flexible sensor exhibited a high sensitivity by decorating Pt NPs and immobilizing glucose oxidase. • A simple and effective way to fabricate flexible electronic devices was explored. Polyimide-laser-engraved porous graphene (LEPG) are hopeful electrode modification materials for flexible electrochemical sensing based on its high-efficiency preparation and low cost. Herein, a flexible, multi-patterned, and miniaturized electrode was fabricated via a simple and novel direct laser engraving. 3D LEPG with porous network structure can selective decorated with Pt nanoparticles (Pt NPs) by in situ electrochemical depositions (Pt-LEPG) as sensitively H 2 O 2 sensors with a wide range of linear (0.01–29 nM) and high sensitivity (575.75 μA mM−1 cm-2). Subsequently, a glucose biosensor was successfully constructed through immobilized glucose oxidases (GOD) onto Pt-LEPG electrode. New-designed GOD/Pt-LEPG glucose sensor exhibited a noteworthy lower limit of detection (0.3 μM, S/N = 3) and high sensitivity (241.82 μA mM-1 cm-2), as much a wide-range of linear (0.01–31.5 mM) at near-neutral pH conditions, enabling detect glucose in real human serum specimens with satisfactory results. Predictably, these outstanding performance sensors have great potential in terms of flexible and wearable electronics. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03043894
- Volume :
- 402
- Database :
- Academic Search Index
- Journal :
- Journal of Hazardous Materials
- Publication Type :
- Academic Journal
- Accession number :
- 147070564
- Full Text :
- https://doi.org/10.1016/j.jhazmat.2020.123774