Induced surface photovoltage in TiO2 sol-gel nanoparticles

Foldable and Cytocompatible Sol-gel TiO2 Photonics

Integrated photonics provides a miniaturized and potentially implantable platform to manipulate and enhance the interactions between light and biological molecules or tissues in in-vitro and in-vivo settings, and is thus being increasingly adopted in a wide cross-section of biomedical applications ranging from disease diagnosis to optogenetic neuromodulation. However, the mechanical rigidity of...

Gilded nanoparticles for plasmonically enhanced fluorescence in TiO2:Sm3+ sol-gel films

UNLABELLED Silica-gold core-shell nanoparticles were used for plasmonic enhancement of rare earth fluorescence in sol-gel-derived TiO2:Sm3+ films. Local enhancement of Sm3+ fluorescence in the vicinity of separate gilded nanoparticles was revealed by a combination of dark field microscopy and fluorescence spectroscopy techniques. An intensity enhancement of Sm3+ fluorescence varies from 2.5 to ...

Characterization and photocatalytic activity of SiO2-TiO2 mixed oxide nanoparticles prepared by sol-gel method

SiO2-TiO2 mixed oxides have been prepared by sol-gel technique from titanium tetraisopropoxide and tetraethylorthosilicate. The prepared materials were characterized by X-ray diffraction, FT-IR spectroscopy, scanning electron microscopy, nitrogen physisorption and UV-vis diffuse reflectance spectroscopy. The results indicate that compared to pure TiO2, the SiO2-TiO2 mixed oxides show higher the...

Epoxy-based hybrids using TiO2 nanoparticles prepared via a non-hydrolytic sol-gel route

Preparation and Characterization of TiO2 Nanoparticles Prepared by Sol-Gel Method

In this study, TiO2 nanoparticles have been synthesized by sol-gel method. Then, the effects of the different pHs, stirring times, surfactants (CTAB and Span 20) and temperatures on TiO2 nanoparticles were studied. The X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR), and transmission electron microscopy (TEM) analyses were used to characterize the samples. The obs...