1,522 Results Found

Using MnSO₄·H₂O as manganese source and urea as nitrogen source, Mn/N co-doped TiO₂ loaded on wood-based activated carbon fiber (Mn/Ti-N-WACF) was prepared by sol–gel method. Mn/Ti-N-WACF with different Mn doping contents was characterized by scannin...

In recent years, defective TiO₂-based composite nanomaterials have received much attention in the field of photocatalysis. In this work, TiB₂ was used as a precursor to successfully prepare Ti³⁺ defective TiO₂ (TiO₂-B) with a truncated bipyramidal st...

Effect of zirconia on the 6 wt.% Co₃O₄/TiO₂ catalyst for NO_x reduction is investigated in this paper. Co₃O₄/TiO₂ catalyst was prepared by using hydrothermal method and then was promoted with zirconia by impregnation to get 8% wt. ZrO₂-Co₃O₄/TiO₂ cata...

In this study, home-made amorphous TiO₂ microspheres with good mono-dispersity and large numbers of mesopores on the surface were used as substrates. The intermediate microspheres were obtained by adding Co/Ni sources with different Co/Ni molar ratio...

CaCO₃-TiO₂ composite particles were prepared with calcium carbonate (CaCO₃) and TiO₂ in stirred mill according the wet grinding method. The pigment properties, morphology, and structure of CaCO₃-TiO₂ composite particles and the interaction behaviors...

Investigating the microwave dielectric properties of ceramics prepared through the conventional solid-state route, such as x[(Mg_0.6Zn_0.4)_0.95Co_0.05]_1.02TiO_3.02-(1−x)Ca_0.6(La_0.9Y_0.1)_0.2667TiO₃, reveals notable characteristics. [(Mg_0.6Zn_0.4)_0.95C...

For the first time, the synthesis, characterization, and analytical application for hydrogen peroxide quantification of the hybrid materials of Co₂TiO₄ (CTO) and reduced graphene oxide (RGO) is reported, using in situ (CTO/RGO) and ex situ (CTO+RGO)...

This paper presents an experimental study of using a double-layered Cu/TiO₂ and P₄O₁₀/TiO₂ as photocatalysts for CO₂ reduction with an extended wavelength of range light from ultraviolet light (UV) to infrared light (IR). The lights studied were UV +...

To improve the properties and dispersibility of CaCO₃-TiO₂ composite pigments (CaCO₃-TiO₂) in organic matrices, the surface modification of CaCO₃-TiO₂ was performed with sodium stearate (SS) as an organic modifier by wet ultra-fine grinding in a stir...

Nanosized titanium dioxide (TiO₂) is currently being actively studied by the global scientific community, since it has a number of properties that are important from a practical point of view. One of these properties is a large specific surface, whic...

Supported Pt-based catalysts have been identified as highly selective catalysts for CO oxidation, but their potential for applications has been hampered by the high cost and scarcity of Pt metals as well as aggregation problems at relatively high tem...

Oriented TiO₂ nanotubes, which are fabricated by anodic oxidation method, are prospective in photoelectrochemical analysis and sensors. In this work, Pt and IrO₂ co-modified TiO₂ nanotubes array was prepared via a two-step deposition process involvin...

Trace amounts of Co₃O₄ modified TiO₂ nanorod arrays were successfully fabricated through the photochemical deposition method without adding any nocuous reagents. The Co₃O₄/TiO₂ nanorod arrays fabricated in acid solution had the highest photo-electroc...

In order to improve the CO catalytic oxidation performance of a Pt/TiO₂ catalyst, a series of Pt/TiO₂ catalysts were prepared via an impregnation method in this study, and various characterization methods were used to explore the effect of TiO₂ calci...

Exposing catalytically active metal sites in metal–organic frameworks (MOFs) while maintaining porosity is beneficial for increasing electron transport to achieve better electrochemical energy conversion performance. Herein, we propose an in si...

This study presents a unified first-principles investigation of CO₂, NO₂, SO₂, and H₂O adsorption on Al₂O₃ (001), TiO₂ (001), and SiO₂ (001) surfaces, establishing the first cross-material, chemically consistent benchmark for oxide–gas interact...

TiO₂ anodes have attracted great attention due to their good cycling stability for lithium ion batteries and sodium ion batteries (LIBs and SIBs). Unfortunately, the low specific capacity and poor conductivity limit their practical application. The m...

The first-principles calculation was used to explore the effect of a bimetallic dimer-embedded anatase TiO₂(101) surface on CO₂ reduction behaviors. For the dimer-embedded anatase TiO₂(101) surface, Zn-Cu, Zn-Pt, and Zn-Pd dimer interstitials could s...

In this work, we studied how TiO₂ and ZrO₂ coatings enhance the CO oxidation performance of SiO₂-supported Pt catalysts under conditions relevant to automotive emissions control. SiO₂ was coated with metal oxides TiO₂ or ZrO₂ by sol-gel method and th...

To date, (001)TiO₂/Ti₃C₂T_x hybridized photocatalyst is usually prepared through the complicated treatment of Ti₃AlC₂ in the presence of corrosive fluorine with a molar ratio of nF:nTi of more than 20. To reduce the use of corrosive fluorine, herein,...

Climate change and the global energy crisis have led to an increasing need for greenhouse gas remediation and clean energy sources. The electrochemical CO₂ reduction reaction (CO₂RR) is a promising solution for both issues as it harvests waste CO₂ an...

The present study investigates the photocatalytic properties of hydrothermally synthesized TiO₂ nanowires (NWs) for CO₂ reduction in H₂O vapor. It has been demonstrated that TiO₂ NWs, thermally treated at 500–700 °C, demonstrate an almost t...

Photocatalytic conversion of CO₂ to useful products is an alluring approach for acquiring the two-fold benefits of normalizing excess atmospheric CO₂ levels and the production of solar chemicals/fuels. Therefore, photocatalytic materials are continuo...

Utilizing solar energy for photocatalytic CO₂ reduction is an attractive research field because of its convenience, safety, and practicality. The selection of an appropriate photocatalyst is the key to achieve efficient CO₂ reduction. Herein, we repo...

High-nickel ternary LiNi_0.6Co_0.2Mn_0.2O₂ (NCM622) is a promising cathode material for lithium-ion batteries due to its high discharge-specific capacity and energy density. However, problems of NCM622 materials, such as unstable surface structure, lith...

In this article, a novel Co₃O₄@TiO₂ composite is synthesized by applying two-step methods. ZIF-67 is synthesized and used as a template for the synthesis of the composite. The composite is designed by using the effective photocatalytic properties of...

Non-noble metal oxides consisting of CuO and TiO₂ (CuO/TiO₂ catalyst) for CO₂ reduction were fabricated using a simple hydrothermal method. The designed catalysts of CuO could be in situ reduced to a metallic Cu-forming Cu/TiO₂ catalyst, which could...

Engineering phase-selective gel composites presents a promising route to enhance both CO₂ adsorption and conversion efficiency in photocatalytic systems. In this work, Cu₉S₅/TiO₂ gel composites were synthesized via a hydrazine-hydrate-assisted hydrot...

Photocatalytic reduction of CO₂ into value-added chemicals offers a sustainable route to mitigate greenhouse gas emissions while producing renewable fuels. However, conventional TiO₂-based systems suffer from limited visible-light activity and ineffi...

This study demonstrates the ability to control the properties of TiO₂–CuO_x composite layers for photocatalytic applications by using a simple electrophoretic deposition method from isopropanol-based suspension. To obtain uniform layers with a c...

A new photocatalyst for CO₂ reduction has been presented. The photocatalyst was prepared from a combination of a commercial P25 with a mesopore structure and carbon spheres with a microporous structure with high CO₂ adsorption capacity. Then, the obt...

Converting carbon dioxide (CO₂) into solar fuels through photocatalysis represents an appealing approach to tackling the escalating energy crisis and mitigating the greenhouse effect. In this study, using melamine–formaldehyde (MF) nanospheres...

Symmetric titania nanotube arrays (TiO₂ NTs) are a well-known photocatalyst with a large surface area and band edge potentials suitable for redox reactions. Thermal treatment of symmetrical arrays of TiO₂ nanotubes in argon was used to change the car...

The synthesis of TiO₂ nanoparticles (NPs) in supercritical media has been reported over the last two decades. However, very few studies have compared the physicochemical characteristics and photoactivity of the TiO₂ powders produced from different pr...

Among all greenhouse gases, CO₂ is considered the most potent and the largest contributor to global warming. In this review, photocatalysis is presented as a promising technology to address the current global concern of industrial CO₂ emissions. Phot...

CO selective methanation is regarded as an efficient technological solution for hydrogen-rich gas purification in fuel cells. In this study, a series of bimetallic catalysts (Ru-Ni/xTiO₂-MgAl₂O₄) were synthesized by impregnation method after surface...

The aim of this study is to clarify the effect of doped metal type on CO₂ reduction characteristics of TiO₂ with NH₃ and H₂O. Cu and Pd have been selected as dopants for TiO₂. In addition, the impact of molar ratio of CO₂ to reductants NH₃ and H₂O ha...

Alongside the gradual progress of industrialization and the continuous development of human society, the problems of environmental pollution and energy crisis have become increasingly prominent. Semiconductor photocatalysis is a promising solution to...

Excessive emissions of carbon dioxide have led to the greenhouse effect and global warming. Reducing carbon dioxide into high-value-added chemicals through solar energy is a promising approach. Herein, a g-C₃N₄/TiO₂ heterojunction photocatalyst with...

TiO₂ is a promising anode material for lithium-ion batteries (LIBs) due to its low cost, suitable operating voltage, and excellent structural stability. The inherent poor electron conductivity and low ion diffusion coefficient, however, severely limi...

The photocatalytic reduction of carbon dioxide (CO₂) into value-added chemicals is considered to be a green and sustainable technology, and has recently gained considerable research interest. In this work, titanium dioxide (TiO₂) supported Pt, Pd, Ni...

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...

In this study, Co-doped TiO₂ was synthesized using waste tobacco stem silk (TSS) as a template via a one-pot impregnation method. These samples were characterized using various physicochemical techniques such as N₂ adsorption/desorption analysis, dif...

Mixed phase TiO₂ nanoparticles with element doping by Sm and C were prepared via a facile sol-gel procedure. The UV-Vis light-diffuse reflectance spectroscopy analysis showed that the absorption region of co-doped TiO₂ was shifted to the visible-ligh...

To address the corrosion of 304 stainless steel in marine environments, TiO₂/NiCo₂S₄ composite photoanodes were fabricated via anodic oxidation and hydrothermal methods. X-ray diffraction, scanning electron microscope, energy-dispersive x-ray spectro...

In an attempt to improve the photocatalytic activity of anatase TiO₂, we developed a composite photocatalyst composed of hollow TiO₂ microspheres (hTS) and graphene. The hTS were prepared through a two-step hydrothermal process, where SiO₂ microspher...

A novel one-step preparation of sonochemical method was applied to synthesize Co/Zn co-doped TiO₂ nanoparticles using a sonicator of 750 W, 20 kHz for 30 min at room temperature. The formation of the anatase TiO₂ phase for all as-prepared samples was...

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...

The aim of this study is to investigate the impact of the rotation speed of ball milling on the CO₂ reduction performance of P₄O₁₀/TiO₂. The rotation speeds studied were 600 rpm, 400 rpm and 200 rpm. It is revealed that the particle size of P₄O₁₀ wit...

Pt/TiO₂ and Pt-Eu₂O₃/TiO₂ catalysts were prepared via the impregnation method for catalytic oxidation of CO. The Pt-2Eu₂O₃/TiO₂ catalyst exhibited better CO oxidation activity as well as greater SO₂ resistance than the Pt/TiO₂ catalyst. For the inlet...