Preparation TiO2 core-shell nanospheres and application as efficiency drug detection sensor

Abstract

In this paper, we report the facile preparation of monodisperse titanium dioxide-diltiazem/tetrachlorobismuth core-shell nanospheres (TiO2@DTMBi), in which, diltiazem (DTM)/tetrachlorobismuth (BiCl4) complexes were employed as electroactive materials. The morphology, size, formation, and structure of the obtained TiO2@DTMBi spheres were investigated by transmission electron microscopy, scanning electron microscopy, dynamic light scattering, Fourier transform infrared spectroscopy, and X-ray diffraction. The optimal condition of obtained monodisperse 40-nm TiO2@DTMBi spheres was researched. The results of using TiO2@DTMBi nanospheres as proposed drug sensor indicate a wide linear range (10-7 to 10-1 M) and a very low detection limit of 0.20 μg/mL.

TiO2-Based Nanoheterostructures for Promoting Gas Sensitivity Performance: Designs, Developments, and Prospects

“…It is worthy to note that room temperature chemical method is an efficient way to synthesize organic-functionalized TiO 2 nanoheterostructures, such as TiO 2 /polypyrrole nanocomposites [ 88 ], TiO 2 -diltiazem/tetrachlorobismuth core-shell nanospheres (TiO 2 @DTMBi core-shell nanospheres) [ 89 ], polymer-functionalized TiO 2 nanorods [ 90 ], molecularly imprinted polymer on TiO 2 nanotubes (MIP@TiO 2 NTs) [ 91 ], polypyrrole/TiO 2 heterojunction (PPy/TiO 2 heterojunction) [ 78 ], and Prussian blue/TiO 2 nanowires (PB/TiO 2 NWs) [ 63 ]. Typically, Wang and his co-workers [ 92 ] have reported a simple, low cost, and effective chemical method to fabricate polythiophene/Pd/TiO 2 ternary composite nanoheterostructures, where TiO 2 spheres were synthesized in water/acetone solvent, and then the Pd species were loaded on the TiO 2 microspheres, finally the polythiophene was covered on the spheres to obtain polythiophene/Pd/TiO 2 ternary composites.…”

Design of an Efficient Tin Selenide-Based Ternary Nanocomposite Electrode for Simultaneous Determination of Paracetamol, Tryptophan, and Caffeine

“…Among the tin chalcogenides, p-type tin selenide (SnSe) is nontoxic and cheap and its constituent elements are abundant in nature, which helps significantly improve their worth in sustainable energy-related applications . Similarly, metal oxides such as iron oxide and TiO 2 have also been employed for various applications particularly as electrocatalytic material for sensing of various pollutants, drugs, dyes, and metals discharged from organic/pharmaceutical industries. , The integration of these materials into GO can improve the conductivity and electrochemical stability. This enhanced behavior cannot be achieved in a single component, and therefore, the resulting ternary nanocomposite will be a promising candidate for electrochemical application.…”