Photocatalytically active nanostructures require a large specific surface area with the presence of many catalytically active sites for the oxidation and reduction half reactions, and fast electron (hole) diffusion and charge separation. Nanowires present suitable architectures to meet these requirements. Axially segmented Ag|ZnO and radially segmented (coaxial) TiO2-Ag nanowires with a diamete...

In this study, TiO2-10%wt. carbon nanotube (CNT) nanocomposite powders were synthesized by sol-gel method at various hydrolysis rate affected by different reaction agents of acetyl acetone and benzyl alcohol. Crystallization of TiO2 was then achieved through calcination at 400 °C. The properties of nanocomposite powder investigated by scanning electron microscopy, X-ray diffraction and diffuse ...

The catalytic performances of TiO2-supported Ni catalysts for the methanation CO2 have been investigated using different crystalline phases TiO2 (rutile and anatase). activity depends appreciably on nature support. rate hydrogenation decreases in order 10Ni/TiO2-rutile ≫ 10Ni/TiO2-anatase. use a mixture containing 70% 10Ni/TiO2-anatase + 30% allows significant increase reaction related to 100% ...

This study examines the incorporation of TiO2 into sodium borosilicate glasses and its effect on formation glassy crystalline microphases. Glasses in composition range: 7Na2O–23B2O3–(70 - X)SiO2–XTiO2 (where X = 0–14.6 mol.% TiO2) which exhibit phase separation were investigated. Raman studies confirm two different coordinations depending molar content TiO2. Thermal properties are unaffected by...

The main objective of this study is to show the effect of TiO2 nanotube length, diameter and intertubular lateral spacings on the performance of back illuminated dye sensitized solar cells (DSSCs). The present study shows that processing short TiO2 nanotubes with good lateral spacings could significantly improve the performance of back illuminated DSSCs. Vertically aligned, uniform sized diamet...

A template- and surfactant-free process, thermally assisted photoreduction, is developed to prepare vertically grown ultra-long Pt nanowires (NWs) (about 30-40 nm in diameter, 5-6 μm in length, and up to 80 NWs/100 μm2 in the wire density) on TiO2 coated substrates, including Si wafers and carbon fibers, with the assistance of the photocatalytic ability and semiconductor characteristics of TiO2...

Recently, colored H-doped TiO2 (H-TiO2) has demonstrated enhanced photoelectrochemical (PEC) performance due to its unique crystalline core-disordered shell nanostructures and consequent enhanced conduction behaviors between the core-shell homo-interfaces. Although various hydrogenation approaches to obtain H-TiO2 have been developed, such as high temperature hydrogen furnace tube annealing, hi...

TiO2-supported catalysts have been widely used for a range of both liquid-phase and gas-phase hydrogenation reactions. However, little is known about the effect their different crystalline surfaces on activity during hydrodeoxygenation process. In this work, Au supported anatase TiO2, mainly exposing 101 or 001 facets, was investigated (HDO) guaiacol. At 300 °C, strong interaction between TiO2-...