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

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. . …

Dependencies of zeta potential of titanium dioxide particles and aggregative stability of its aqueous suspensions from pH in the solutions of alkaline metals halogenides: KF, KCl, KBr, LiF, LiCl ...

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 …

Titanium dioxide (TiO 2) nanomaterials are known for their numerous and diverse applications, which range from common ... lay out the general synthesis principles and discuss the impact of various titanium precursors and the commonly seen aqueous, nonaqueous, and templated approaches for making TiO 2 nanoparticles. Turning next to …

DOI: 10.1016/j.jeurceramsoc.2010.12.017 Corpus ID: 98781292; Anodic aqueous electrophoretic deposition of titanium dioxide using carboxylic acids as dispersing agents @article{Hanaor2011AnodicAE, title={Anodic aqueous electrophoretic deposition of titanium dioxide using carboxylic acids as dispersing agents}, author={Dorian Amir …

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 …

A platinum-lined, flowing autoclave facility was used to investigate the solubility behavior of titanium dioxide (TiO2) in aqueous sodium phosphate, sodium hydroxide and ammonium hydroxide solutions between 17 and 288°. Baseline Ti(IV) solubilities were found to be on the order of one nanomolal, which were enhanced by the …

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 …

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 …

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.

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 ...

Titanium dioxide NPs (70:30 anatase:rutile) were purchased from Evonik. ... The aqueous phase was composed of the TiO 2 NP/NFC mixtures prepared at three different pH: 4, 6.7 and 8. Emulsification was carried out by stirring in an IKA ultraturrax model T10 basic and S10N-5G disperser for 5 min at 22000 rpm.

TiO2 nanoparticles (nano-TiO2) as one of the most extensively used nanoscale materials easily undergo spontaneous aggregation and gravity sedimentation ascribed to their high adsorption energy, which significantly restricts their actual applications. For this reason, a benzyl-grafted alginate derivative (BAD) with

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 - an overview | ScienceDirect Topics. Anatase is tetragonal, with two TiO2 formula units (six atoms) per primitive cell. From: Comprehensive Semiconductor …

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.

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

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 …

The photocatalytic degradation of amoxicillin (AMX) by titanium dioxide nanoparticles loaded on graphene oxide (GO/TiO2) was evaluated under UV light. Experimental results showed that key parameters such as initial pH, GO/TiO2 dosage, UV intensity, and initial AMX concentration had a significant effect on AMX degradation. …

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 …

Photocatalytic oxidation of methyl orange in presence of titanium dioxide in aqueous suspension. Part I: Parametric study N. Guettaı¨, H. Ait Amar De´partement de Ge´nie des Proce´de´s et Environnement Faculte´ de Ge´nie Me´canique et Ge´nie des Proce´de´s, USTHB, B.P. 32, El Alia Bab Ezzouar, 16111 Alger-Alge´rie email: [email …

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.

Predicting the fate of nanoparticles in aquatic environments requires knowledge of how these materials interact with the organic and inorganic constituents in aqueous media. This work explored the behavior of three types of titanium dioxide nanoparticles (rutile and anatase) in natural seawater, artificial seawater, and Milli-Q …

This study shows that biochar-supported TiO2 photocatalytic composites are feasible for the green and efficient removal of CrVI from an aqueous phase. Rationale TiO2 has great application ...

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

Titanium dioxide. Titanium dioxide is a metal oxide, which exists in three crystalline structures: anatase, brookite, and rutile. ... In the hydrothermal technique, we grow crystals in an aqueous solution that is kept in an autoclave at high temperature and pressure. This method of producing titanium dioxide nanoparticles is beneficial as it ...

stability and effect of charges (ions) on the TiO dispersion and the suspension stability behavior. The. addition of surfactant produced more dispersed and stable TiO in aqueous suspension. 2.5 wt ...

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) 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 …

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.

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 …

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 …