A Core-Shell Au@TiO and Multi-Walled Carbon Nanotube-Based Sensor for the Electroanalytical Determination of HO in Human Blood Serum and Saliva.

A hydrogen peroxide (HO) sensor was developed based on core-shell gold@titanium dioxide nanoparticles and multi-walled carbon nanotubes modified glassy carbon electrode (Au@TiO/MWCNTs/GCE). Core-shell Au@TiO material was prepared and characterized using a scanning electron microscopy and energy dispersive X-ray analysis (SEM/EDX), transmission electron microscopy (TEM), atomic force microscopy (AFM), Raman spectroscopy, X-ray diffraction (XRD) and Zeta-potential analyzer. The proposed sensor (Au@TiO/MWCNTs/GCE) was investigated electrochemically using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS).