125 Results Found

This study aimed to present the differences in the corrosion properties and protective ability of two bi-layer systems obtained on low-carbon steel in a model corrosive medium of 5% NaCl solution. These newly developed systems consist of Zn-Co (3 wt....

Wastewater treatment targeting reuse may limit water scarcity. Photocatalysis is an advanced oxidation process that may be employed in the removal of traces of organic pollutants, where the material choice is important. Titanium dioxide (TiO₂) is a h...

Herein, the spinel-layered cathode material Li_1.33MnTiO_4+z (0.8LiMnTiO₄•0.2Li₂Mn_0.5Ti_0.5O₃) is investigated for the purpose of developing a high-capacity, low-cost, and environmentally friendly cathode for Li-ion batteries. Sol-gel synthesis is...

This paper presents the synthesis of La₂Ti₂O₇ nanoparticles by the sol–gel method starting from lanthanum nitrate and titanium alkoxide (noted as LTA). Subsequently, the lanthanum titanium oxide nanoparticles are modified with noble metals (pla...

In this study, coatings of different oxides (TiO₂, Al₂O₃, ZrO₂) and hydroxyapatite (HAp) as well as sandwich composite hydroxyapatite with an oxides sublayer (oxide+HAp) were deposited on Ti6Al7Nb alloy using the sol–gel dip-coating method. The...

Pyrochlore titanate (Y₂Ti₂O₇) is a promising material for a wide range of applications in optoelectronics and photocatalysis due to its advantageous chemical, mechanical, and optical properties. To enhance its potential for such uses, however, a high...

Design and fabrication of a catalyst with the highest activity can be achieved by optimising the synthesis conditions. In this study, the sol-gel synthesis conditions of citric acid concentration, gelling temperature, complex time, and calcination te...

Porous materials are currently the basis of many optical sensors because of their ability to provide a higher interaction between the light and the analyte, directly within the optical structure. In this study, mesoporous TiO₂ layers were fabricated...

In this work, a single-layer TiO₂–ZrO₂ thin film is deposited on the AISI 316L austenitic stainless steel by the sol–gel process and the dip coating method to improve its corrosion resistance properties. For the sol preparation, titanium isopropoxide...

Doping inorganic acid ions represents a promising pathway to improving the photocatalytic activity of TiO₂, and oxygen vacancy has been regarded as the determinant factor for photocatalytic activity. A series of samples doped with Cl⁻, NO₃^&minu...

Multilayered TiO₂ films doped either with Niobium or Vanadium (1.2 at. %) were deposited by the sol-gel dip coating method on c-Si and glass substrates. The films on glass substrates were tested for CO sensing and photocatalytic degradation of methyl...

The photo-induced effects on sol–gel-based organo TiO₂-SiO₂ thin layers deposited by the dip-coating technique have been investigated using two very different light sources: A light-emitting diode (LED) emitting in the UV (at 365 nm, 3.4 eV) an...

In this work, layers of a sol-gel hybrid matrix doped with metal oxide nanoparticles (TiO₂ NPs) have been deposited on flat samples of AA6061-T6 aluminum alloy using the dip-coating technique, with the aim of obtaining coatings with better anti-corro...

In this study, titanium oxide TiO₂ nanoparticles were produced using the sol–gel approach of green synthesis with pectin as the reducing agent. The synthetized TiO₂ nanoparticles with pectin were characterized by scanning electron microscopy (S...

Surface micro-nanostructuring can provide new functionalities and properties to coatings. For example, it can improve the absorption efficiency, hydrophobicity and/or tribology properties. In this context, we studied the influence of micro-nanostruct...

Sol-gel spin coating method was employed for depositing TiO₂ and Ag-doped TiO₂ films. The effects of Ag doping and the annealing temperatures (300–600 °C) were studied with respect to their structural, morphological, vibrational, and optica...

An oxygen gas microsensor based on nanostructured sol-gel TiO₂ thin films with a buried Pd layer was developed on a silicon substrate. The nanostructured titania thin films for O₂ sensors were prepared by the sol-gel process and became anatase after...

Organic–inorganic hybrid dielectric nanomaterials are vital for OTFT applications due to their unique combination of organic dielectric and inorganic properties. Despite the challenges in preparing stable titania (TiO₂) nanoparticles, we succes...

This study adopts the sol-gel method to prepare a TiO₂ coating on the surface of the AZ91 magnesium alloy, hydrolyse C₁₆H₃₆O₄Ti to generate the TiO₂ coating and form a film with excellent corrosion resistance on the surface of an AZ91 magnesium alloy...

The versatility of sol–gel systems makes them ideal for functional coatings in industry. However, existing coatings are either too thin or take too long to cure. To address these issues, this paper proposes using an atmospheric pressure plasma...

Sol-gel technology has attracted attention in the fabrication of diverse luminescent materials and thin film structures, with forms that range from powders to microcavities. The optical properties of sol-gel-derived structures depend on the sol compo...

Surface modifications not only improve the corrosion resistance of Co-Cr-Mo dental alloys (Bego Wirobond^® C) but also ensure their long-term performance and reliability in dental applications. This paper describes the preparation of single-layer...

A train of bio-inspired nanotubular Na₂MoO₄/TiO₂ composites were synthesized by using a natural cellulose substance (e.g., commercial ordinary filter paper) as the structural template. The TiO₂ gel films were coated on the cellulose nanofiber surface...

This study aimed to synthesize TiO₂ and silver-containing TiO₂ layers on Ti6Al4V titanium alloy substrates, also known as titanium grade 5 (TiGr5), to provide corrosion resistance and antibacterial activity. The TiO₂ layers were prepared through the...

A promising approach that uses the sol–gel method to manufacture new breathable active films with self-cleaning and antibacterial surfaces is based on the PET membranes obtained via ion track technology with a pore density of 10^–7 cm^&minu...

We have developed a very useful and cost-effective liquid crystal (LC) alignment layer of brush-coated TiO₂ that is solution-processable for twisted nematic (TN) LC cells. TiO₂ was prepared via the sol-gel method. The TiO₂ solution was brush-coated o...

This work reports on the preparation of Cr-doped TiO₂ (Cr–TiO₂), Cu-doped (Cu-TiO₂), and its utilization in the photoanode of a solar redox flow battery (SRFB). A pure TiO₂ electrode, Cr-doped TiO₂ electrode, and Cu-doped TiO₂ electrode coated...

TiO₂ thin film coatings significantly improve catalyst separation in photocatalytic processes. They can be applied in heterogeneous photocatalysis under sunlight by mixing TiO₂ with other oxides, such as CeO₂, for the removal of pollutants in water....

The preparation of anodic TiO₂ nanotube layers has been performed using electrochemical anodization of Ti foil for 4 h at different voltages (from 0 V to 80 V). In addition, a TiO₂ thin layer has been also prepared using the sol–gel method. All...

Photocatalytic ceramic membranes have attracted considerable attention for industrial wastewater treatment. However, morphological control of the membrane surface to improve its photocatalytic reactivity for the degradation of organic pollutants rema...

This research article aims to improve the specific capacitance of DC-etched Al foil for Al electrolytic capacitors by forming an Al₂O₃-TiO₂ composite anodic oxide film. DC-etched Al foils for aluminum electrolytic capacitors were immersed in a TiO₂ p...

The focus of this study was the preparation of sol–gel titanium dioxide (TiO₂) coatings, by the dip-coating technique, on Ti6Al4V (TiGr5) and specific Ti implant substrates. In order to confer antibacterial properties to the layers, Eugenol was...

The synthesis of Mn-TiO₂/TiO₂, together with its application as a photoanode for solar flow batteries (SFBs), is reported herein. Both the pure TiO₂ electrode and the Mn-TiO₂/TiO₂ based composite electrode were prepared using the sol–gel spin-c...

Improved corrosion protection of low-carbon steel was achieved by barrier non-toxic sol–gel multilayered structures composed of a ZrO₂ top coating and TiO₂ underlayers. The zirconium precursor solution was maintained as constant, whereas the TiO₂ sol...

In this study, TiO₂-P25 films on FTO substrates were synthesized using the sol-gel process and studied using Variable Angle Spectroscopy Ellipsometry (VASE) to determine their optical constants and thickness. The measurements were carried out at room...

Dye-sensitized solar cells (DSSCs) are low-cost solar cells belonging to the thin-film photovoltaic cell type. In this study, we studied the photovoltaic performances of DSSCs based on titanium dioxide (TiO₂) nanofibers (NFs) containing silver (Ag) n...

The discharge of printing and dyeing wastewater has become a key concern in global water pollution control due to its high pollutant concentration, dark color, refractory biodegradability and toxic characteristics. Photoelectrocatalytic (PEC) technol...

Due to the unique properties of titanium dioxide (TiO₂), titanium oxide catalysts hold significant potential for photo-oxidative processes involving organic substances in liquid media. The current research has focused on developing new preparation me...

In the present work, thin TiO₂ films were obtained by the sol–gel spin-coating method on glass and ITO-covered glass substrates. The crystallization evolution of the thin films was studied by the X-ray Diffraction (XRD) technique. The results i...

There is a need for highly efficient photocatalysts, particularly for water purification. In this study, we fabricated a mesoporous TiO₂ thin film on a boron-doped diamond (BDD) layer by a surfactant-assisted sol-gel method, in which self-assembled a...

A new composite photocatalyst called POF/TiO₂ was prepared from commercial P25 TiO₂ and Posidonia oceanica fibers (POF), a biomaterial collected from Tunisia’s beach. The composite material was prepared by a classical sol-gel synthesis and was charac...

The clean technologies of self-cleaning surfaces are expanding rapidly. Highly hydrophobic coatings with strong adhesion, high durability, and dirt-free surfaces have been prepared via sol-gel deposition of SiO₂-TiO₂-alkylsilane. The influence of the...

Herein, the electrorheological (ER) performances of ER fluids were correlated with their colors to allow for the visual selection of the appropriate fluid for a specific application using naked eyes. A series of TiO₂-coated synthetic mica materials c...

In this paper, hydroxyapatite-carbon nanotube/titania (HA-CNT/TiO₂) double layer coatings were successfully developed on titanium (Ti) substrates intended for biomedical applications. A TiO₂ coating was firstly developed by anodization to improve bon...

The environmental impact of industrial technologies and related remediation methods are major research trend lines. Unfortunately, in the development of materials for wastewater treatment or air purification, hazardous reactants are often employed, r...

We report on the fabrication of dye-sensitized solar cells with a TiO₂ buffer layer between the transparent conductive oxide substrate and the mesoporous TiO₂ film, in order to improve the photovoltaic conversion efficiency of the device. The buffer...

In this work, the impact of UV (ultaviolet) radiation combined with thermal treatments and Ag doping in TiO₂ transparent films on crystal structure and light absorption in the visible spectral region is investigated. The nanostructured TiO₂:Ag films...

AC-etched aluminum foils for an Al electrolytic capacitor were covered with a TiO₂ film by a sol–gel coating and then anodized to 25 V in an ammonium adipate solution. The structure, properties, and performance of the anodic oxide films were ex...

A spectrally resolved optical waveguide resonance sensor modified with perovskite film is proposed. The sensor is based on a Kretschmann configuration consisting of a coupling prism, an indium tin oxide (ITO) glass, a gold film, a mesoporous TiO₂ lay...

Sr₂TiO₄ is a promising photocatalyst for antibiotic degradation in wastewater. The photocatalytic performance of pristine Sr₂TiO₄ is limited to its wide bandgap, especially under visible light. Doping is an effective strategy to enhance photocatalyti...