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Updated: Jan 27, 2026

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
Published on: February 1, 2022
TiO₂ Decorated Graphene as a Fluorescent Chemosensor for the Detection of Silver Ions
A Pandiyarajan1, David John Dmonte1, N Bhuvanesh2
1Department of Nanoscience, Karunya Institute of Technology and Sciences (Deemed-to-be University), Karunya Nagar, Coimbatore 641114, India.
Abstract:
In this report, a new design is proposed for the detection of silver ions using Graphene Oxide-Titanium oxide (GO/TiO₂) composite. The GO was synthesized by modified Hummers method and the composite is synthesized by chemical reflux method. The surface morphology of the composite was analyzed using a scanning electron microscope (SEM), and it is clearly observed that TiO₂ spheres are adsorbed on the surface of GO in a disordered manner. X-ray Diffraction (XRD) results confirm the presence of TiO₂ on GO. Photoluminescence (PL) spectra show the reduced recombination of charge carriers in the (GO/TiO₂) composite. The resulting composite selectively detects silver ions over other potentially competing metal ions with no notable interference monitored by fluorescence.
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