the present study used a constant level of citric acid and polyvinyl alcohol and different amounts of nanocrystalline cellulose (cnc) and tio2 nanoparticles to improve the properties of starch film. the effect of different amounts of glycerol was also examined. the results of differential scanning colorimetry demonstrated that the addition of cnc increased the melting and glass transition tempe...

With the help of nanocrystalline TiO2, the direct electrochemistry of xanthine oxidase (XOD) was achieved and two pairs of redox waves were observed. The interaction between XOD and nitric oxide (NO) was also investigated. The experimental results reveal that NO can be reduced at a XOD-nano TiO2 film modified electrode. When the NO concentration was low, the reduced product, HNO, would inactiva...

The effects of Ti and O implantation on TiO2-x resistive switches are systemically investigated. The forming voltage drops monotonically with Ti implantation dose and forming vanishes completely at 10 ions/cm, whereas oxygen implantation causes a decrease and then increase in forming voltage. The ON/OFF current ratio becomes worse with high Ti implantation due to increased leakage currents thro...

This Review focuses on recent developments in the use of ZnO nanostructures for dye-sensitized solar cell (DSC) applications. It is shown that carefully designed and fabricated nanostructured ZnO films are advantageous for use as a DSC photoelectrode as they offer larger surface areas than bulk film material, direct electron pathways, or effective light-scattering centers, and, when combined wi...

In this work, tetra(4-carboxyphenyl)porphyrin (TCPP) and two Anderson-type polyoxomolybdates (containing Cu Zn, respectively; CuPOM, ZnPOM) were synthesized deposited on TiO2 thin films. The properties of the obtained materials characterized through UV–vis spectroscopy, Fourier transform infrared spectroscopy (FT-IR), diffuse reflection scanning electron microscopy (SEM) energy-dispersive X-ray...

The goal of this mini-grant is to identify the effectiveness of photocatalysis to purify water using a titanium dioxide (TiO2) catalyst coated on translucent, particulate media. To clean contaminated waters, photocatalysis requires sufficient light to initiate chemical reactions leading to the mineralization of organic contaminants. Thus, we intend to perform a series of laboratory experiments ...

We demonstrate a novel atomic layer deposition (ALD) process to make high quality nanocrystalline titanium dioxide (TiO2) and zinc oxide (ZnO) with intermediate Al2O3 layers to limit the crystal size. The waveguide losses of TiO2/Al2O3 nanolaminates measured using the prism coupling method for both 633 nm and 1551 nm wavelengths are as low as 0.2 ± 0.1 dB/mm with the smallest crystal size. We a...

Introduction Titania (TiO2) is an outstanding materials because of its superior physical properties but nanostructured titania films synthesized by an evaporationcondensation aerosol process can be used only for limited applications because of their low mechanical strength. In this study, the surface of titania nanoparticles (TiO2) is modified by a heterogeneous capillary condensation process t...

2014 Absorption measurements performed by means of photoacoustic absorption (PAA)-technique in wedge-shaped TiO2’ Ta2O5, and ZrO2 single-layer films at 03BB = 488 nm, 515 nm, and 647 nm permit a separate determination of bulk and interface absorption, respectively. For TiO2 and Ta2O5 films investigated the filmsubstrate interface absorption Afs dominates over the air-film interface absorption A...

We report controlled laminar growth of a crystalline transition metal oxide on Si 001 without SiOx or silicide formation by utilizing the chalcogenide semiconductor gallium sesquiselenide Ga2Se3 as a nonreactive buffer layer. Initial nucleation of both pure and Co-doped anatase TiO2 is along Ga2Se3 nanowire structures, coalescing to a flat, multidomain film within two molecular layers. Arsenic-...