Microwave assisted synthesis of rGO/ZnO composites for non-enzymatic glucose sensing and supercapacitor applications

M. Sreejesh 1 S. Dhanush 1 Fabrice Rossignol 2 H.S. Nagaraja 1
2 SPCTS-AXE1 - Axe 1 : procédés céramiques
SPCTS - Science des Procédés Céramiques et de Traitements de Surface
Abstract : Zinc oxide (ZnO) and Graphene Oxide (GO) are known to show good electrochemical properties. In this paper, rGO/ZnO nanocomposites have been synthesised using a simple microwave assisted method. The nanocomposites are characterized using XRD, Raman, SEM and TEM. XRD reveals the wurtzite structure of ZnO and TEM shows the heterogeneous nucleation of ZnO nanocrystals anchored onto graphene sheets. The electrochemical properties of the rGO/ZnO nanocomposite enhanced significantly for applications in glucose sensors and supercapacitors. The non-enzymatic glucose sensor of this nanocomposite tested using cyclic voltammetry (CV) and chronoamperometry, exhibits high sensitivity (39.78 mA cm−2 mM−1) and a lower detection limit of 0.2 nM. The supercapacitor electrode of rGO/ZnO nanocomposite exhibits a significant increase in specific capacitance.
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Soumis le : jeudi 20 septembre 2018 - 15:13:13
Dernière modification le : vendredi 21 septembre 2018 - 01:19:21

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M. Sreejesh, S. Dhanush, Fabrice Rossignol, H.S. Nagaraja. Microwave assisted synthesis of rGO/ZnO composites for non-enzymatic glucose sensing and supercapacitor applications. Ceramics International, Elsevier, 2017, 43 (6), pp.4895 - 4903. ⟨10.1016/j.ceramint.2016.12.140⟩. ⟨hal-01877946⟩

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