Graphene-carbon nanotubes-gold nanoparticles composites: Synthesis and characterization
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màng tổ hợp DWCNTs-AuNPs-Gr
cảm biến điện hóa DWCNTs-AuNPs-Gr
cyclic voltammetry
electrochemical biosensor

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Phan VC, Phan N Đức D, Cao TT, Nguyễn KN, Lê TQX, Phạm VT, Đào NT, Bùi TPT, Phạm Đức T, Nguyễn VC. Graphene-carbon nanotubes-gold nanoparticles composites: Synthesis and characterization. hueuni-jns [Internet]. 2022Mar.31 [cited 2023Sep.28];131(1A):57-64. Available from:


In this work, a composite nanomaterial consisting of graphene (Gr), double-wall carbon nanotube (DWCNTs) and gold nanoparticles (AuNPs), designated as DWCNTs-AuNPs-Gr was synthesized via the thermal chemical vapour deposition technique. The morphology and electrical and electrochemical properties of the material were characteried by using field emission scanning electron microscopy, Raman spectroscopy, four-probe sheet resistance measurement, and cyclic voltammetry (CV). The average sheet resistance value of DWCNTs-AuNPs-Gr is 549 W/sq, 2.3 times lower than that of graphene. The current response of a DWCNTs-AuNPs-Gr-modified electrode in a 2 mM K3[Fe(CN)6]/K4[Fe(CN)6] solution with 0.1 M PBS is 15.79 µA, 1.48 times higher than that of a graphene-modified electrode and 2.57 times higher than that of a bare electrode. The DWCNTs-AuNPs-Gr material can be used for electrochemical biosensors to detect various bioelements.
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