A photocatalyst comprised of Ag nanoparticles dispersed on an anatase matrix has been prepared using a simple hydrothermal method without additional thermal treatment. The material was characterized scanning electron microscopy (SEM), X-ray diffraction (XRD), high-resolution transmission (HRTEM), UV-Vis spectroscopy, and N2 adsorption–desorption isotherms. catalyst activity evaluated by photoca...

We propose a reflective three-dimensional (3D) display using a cholesteric liquid crystal (ChLC) with an inner patterned retarder producing half-wave retardation. The inner patterned retarder, fabricated by selective ultra-violet exposure to the aligned reactive mesogen, divides the circularly polarized light reflected from the ChLC layer into two orthogonal circular polarizations. These reflec...

(Zn 1− x Co ) 3 Nb 2 O 8 (0 ≤ 0.50) were synthesized as novel inorganic violet pigments and the 0.80 0.20 pigment has good potential to be an alternative conventional ones.

The aim of this study was to compare in vitro the protective and antioxidant properties lutein astaxanthin on human primary corneal epithelial cells (HCE-F). To purpose, HCE-F were irradiated with a blue-violet light lamp (415–420 nm) at different energies (20 80 J/cm2). Lutein (50 250 μM) added right before irradiation 50 J/cm2. Viability evaluated by CKK-8 assay while production reactive oxyg...

The effect of oxidative stress exerted by 0.03% crystal violet, 0.3% bile salt, 4.0% NaCl and 8% ethanol on the survival and production of virulence factors among Acinetobacter haemolyticus isolates obtained from wastewater and river water samples was investigated. Though generally there was insignificant lethal effect against all the isolates, crystal violet exerted the highest lethal effect f...

Spent tea leaves (STL), a solid waste that is available in large amounts worldwide, was investigated as a potential low-cost adsorbent for the removal of two azo dyes, Reactive Green 19 (RG19) and Reactive Violet 5 (RV5), from contaminated waters. Preliminary experiments conducted on untreated STL showed that this material exhibited very low removal efficiencies (<10 %). By contrast, thermal ac...

Photolysis and photocatalysis of Lauth&#39;s violet using nano-titanium dioxide at various aqueous buffer and non-buffer pHs. The effects of some various operating parameters such as initial dye concentration, medium pH, illumination time and catalyst amount have been investigated in a photoreactor equipped with high pressure mercury lamp. Spectrophotometric methods supported that the dye is al...