Titanium Dioxide Nanomaterials for Sensor Applications

Abstract

Figure 7. Typical photocatalytic oxidation and reduciton processess at a TiO 2 nanoparticle. Reprinted with permission from ref 120.

A review on plasmonic metal⿿TiO2 composite for generation, trapping, storing and dynamic vectorial transfer of photogenerated electrons across the Schottky junction in a photocatalytic system

“…A great deal of research on photocatalyst engineering has been carried out to customize the electronic band structure of various semiconducting materials for a specific chemical reaction with unique opto-electronic property [1,2]. TiO 2 is one of the most widely used semiconductor photocatalyst for the oxidative destruction and mineralization of vast number of organic substrates [3][4][5][6][7][8]. The main aim is to explore novel photocatalyst materials with suitable band structure which allows efficient photogeneration of electron-hole pairs to participate in oxidative/reductive processes preferably in the visible region [9][10][11].…”

Clocking the Ultrafast Electron Cooling in Anatase Titanium Dioxide Nanoparticles

“…This allows us to clock the ultrafast timescale of the hot electron thermalization in the conduction band with unprecedented temporal resolution, which we determine to be < 50 fs, due to the strong electronphonon coupling in the material. Our findings call for the design of alternative resonant excitation schemes in photonics and nanotechnology.1 arXiv:1703.07818v2 [cond-mat.mes-hall] 13 Jan 2018In the last decades, anatase TiO 2 has attracted huge interest as one of the most promising materials for a variety of challenging applications, ranging from photocatalysis [1,2] and photovoltaics [3] to sensors [4,5]. Since these technologies involve charge transport, thermalization and localization, they call for studies of the fast electron and hole dynamics, which provide a deep knowledge of the nature of the photogenerated/injected charge carriers and of the energy balance therein.…”

Recent Trends in Field-Effect Transistors-Based Immunosensors

“…The biocompatibility combined with the environmentally friendly character of nanostructured titanium dioxide (TiO2) make this material an excellent perspective interface for the development of biosensing devices [118]. Moreover, TiO2 nanomaterial has a large specific surface area, shows a wide bandgap energy (between 1.8 and 4.1 eV), and possesses the ability of accepting electrons, thus the electrons resulting from the bioreceptor-analyte coupling can be gathered by TiO2 [119].…”