T1 - Evaluation of the energetics of electron trap states at the nanocrystalline titanium dioxide/aqueous solution interface via time-resolved photoacoustic spectroscopy. AU - Leytner, Svetlana. AU - Hupp, Joseph T. N1 - Funding Information: We gratefully acknowledge Professor Kenneth Spears for loan of laser equipment.

Abstract. Crystalline titanium dioxide (TiO 2) was directly grown on a substrate via heterogeneous nucleation in aqueous solutions with titanyl sulfate at near …

Photodechlorination of PCB's in the Presence of Titanium Dioxide in Aqueous Suspensions John H. Carey, John Lawrence, and Helle M. Tosine Water Chemistry Section Canada Centre for Inland Waters P.O. Box 5050 Burlington, Ontario Canada L7R 4A6 INTRODUCTION In view of t h e i r biological and chemical s t a b i l i t y, the …

The photocatalytic properties of titanium dioxide are well known and have many applications including the removal of organic contaminants and production of self-cleaning glass. There is an increasing interest in the application of the photocatalytic properties of TiO2 for disinfection of surfaces, air and water. Reviews of the applications …

Molecular simulation of adsorption properties of thiol-functionalized titanium dioxide (TiO 2) nanostructure for heavy metal ions removal from aqueous solution. Author links open overlay panel Beibei Chen a b, Lin Li a, Lei Liu a, Jianxin Cao a. ... MIP are created in organic solvents and employed in the elimination of pollutants in …

Titanium dioxide (TiO2) is one of the metal oxides that can be effectively employed as a photocatalyst in the abatement of aqueous pollution due to organic compounds. The catalytic performance of titanium dioxide depends on several parameters like its crystallinity, surface area, and morphology.

Cite this article. Carey, J.H., Lawrence, J. & Tosine, H.M. Photodechlorination of PCB's in the presence of titanium dioxide in aqueous suspensions.

Aqueous titanium (IV) chloride solutions were neutralized to different terminal pH (2.5 to 6.0) with magnesium oxide as base at 95 °C and were found to yield nanosized titanium dioxide. The produced materials were compared to those obtained by simple forced hydrolysis.

The aim of this work was to study the hydrolysis reactions that occur on the surface of an aqueous solution of a titanium (III, IV) salt under the action of gaseous …

This research evaluates the adsorption of yttrium from aqueous solutions by titanium dioxide with surface arsenate groups (4As–TiO 2) and titanium dioxide with surface arsenate groups doped by neodymium (Nd/4As–TiO 2).The impacts of various adsorption parameters such as contact time, pH and initial metal concentrations were …

TiO 2 particle surfaces have been reported in the literature to behave as diprotic acid after the hydration of the surface functional groups (Serpone et al., 1992).The surface charge of TiO 2 particles is a function of the crystal types of TiO 2 (anatase or rutile) particles and the dispersed solution characteristics. The surface charge of Degussa P-25 …

Photochemical reactions of a few selected pesticide derivatives and other priority organic pollutants in aqueous suspensions of titanium dioxide. Journal of Molecular Catalysis A: Chemical 2007, 265 (1-2), 231-236.

A synthesis of highly dispersed nanocrystalline materials based on titanium dioxide in aqueous media at neutral pH has been developed. The surface modification of TiO 2 with tiron, ascorbic acid and rutin afforded colored, transparent, colloidal solutions. Stability of yellow-orange colloids at pH = 7 has been achieved.Photoactivity of materials …

Titanium dioxide (TiO 2) as a photocatalyst has been ubiquitously studied for environmental applications.Though, readily available, nontoxic, and environmentally friendly; lower efficiency, less energy harvesting within the UV–Vis range with the ease of photogenerated charge recombination is still a concern for its full-scale deployment as a …

Methylene blue () is a representative of a class of dyestuffs resistant to biodegradation. Its decomposition was examined in aqueous TiO 2 dispersions under UV illumination to assess the influence of temperature, pH, concentration of dissolved oxygen (DOC), initial concentration of , and light intensity on the kinetics of decomposition. . …

The aim of the study was to investigate the degradation kinetics of tetracycline antibiotic by nanosized titanium dioxide under ultraviolet irradiation. Enhancement of photocatalysis by addition of Hydrogen peroxide was also evaluated. Various experimental parameters such as initial tetracycline concentrations, initial …

A reflectance method has been used to assess conduction band edge energies (Ecb) for nanocrystalline TiO2(anatase) electrodes in contact with aqueous electrolytes. The measurements, which were made...

Titanium dioxide (TiO 2) has been used in a wide range of commercial products, particularly as an opacifying and sunscreening agent, despite its reactivity as a photo …

Titanium dioxide (TiO 2) (P25, 20 nm) was purchased from Shanghai Macklin Biochemical Co., Ltd. (China). 3-Mercaptopropyltrimethoxysilane ... Our proposed approach of surface molecular im in aqueous solutions is aiming to provide one significant way for researchers who interested in catalysis and molecular im …

The growth of titanium dioxide nanorod arrays (TNAs) in aqueous solutions containing titanium butoxide and hydrochloric acid can be controlled by regulating the temperature from 115 to 150 °C as an adjustable physical parameter. The transparent colloidal solution of titanates is clouded on the basic growth of TNAs when heated at a …

The popularity of intelligent electronic products demands suitable smart electrodes with high specific capacitance, superior durability, and intrinsic safety. Herein, a bifunctional titanium dioxide (TiO2) electrode with electrochromic energy storage in the Zn-ion aqueous electrolyte was demonstrated. The color of the electrode can be …

The colloidal stability of titanium dioxide aqueous suspension was estimated from the change of the optical absorbance of suspensions using UV/vis spectrophotometry [19] (PE, LAMADA-17). The suspensions of titanium dioxide nanoparticles were prepared as in the adsorption experiments mentioned before, and the samples were poured into a …

Liquid titanium tetrachloride was used as the starting material for the preparation of titanium dioxide. An aqueous titanium tetrachloride solution was prepared by dropwise adding the desired amount of liquid titanium tetrachloride (99.9% purity, from Fisher Scientific Inc.) into de-ionized water under magnetic stirring in an ice-water bath.

In a typical procedure 300 mL of 0.17 M titanium dioxide aqueous solution was put into beaker. The solution of titanium dioxide was then placed in an ultrasonic cleaner operating at a 57 kHz frequency for 2 h, and then 200 mL of 0.1 M sodium hydroxide was slowly dropped into the titanium dioxide solution under magnetic stirring …

Titanium dioxide (TiO 2) nanomaterials are known for their numerous and diverse applications, which range from common products, …

In this study, we investigated the effects of near supercritical carbon dioxide (SCCO 2) parameters, including pressure, temperature, and saturation time on titanium dioxide …

Titanium dioxide (TiO 2) is a white powder extensively used to decontaminate water and food, ensuring environmental and industrial safety, while also serving to protect the skin against harmful radiation [ 1, 2, 3, 4, 5 ]. To better understand …

Multifunctional and durable nano-coating of titanium dioxide (TiO2) on cotton and silk fabric surface has been achieved via sol–gel method in aqueous medium at room temperature. The nanosol is coated on fabric surface by pad-dry-cure method using 1% acrylic binder to achieve durable coating. The coated fabrics are characterized by …

The phytochemical ingredients of the aqueous leaf extract of C. aromaticus had the potential to reduce and stabilize the TiO 2 into TiO 2 NPs in a 24 h reduction process. The Fig. 1 represents a schematic diagram of TiO 2 NPs from aqueous leaf extract of C. aromaticus.A visible color change was noticed during the bioreduction …

Titanium dioxide thin films have a high transparency in the visible wavelength range, but absorb ultraviolet light well [[54], ... If aqueous solutions are used as solvents, the hydrothermal technology is used. The hydrothermal process is more suitable for the preparation of hydroxides, oxyhydroxides or oxides due to the use of water as a ...