Efficiency of TiO particle-coated filter using different binders in carbendazim degradation from Chinese chives.

Dip-coating TiO (Degussa P25) onto the glass-fiber pre-filter using different binders (PEG1000, 2000, 4000, 6000, and Duramax B1000) for carbendazim degradation in Chinese chives was studied. To investigate the effects of binder types, TiO concentration was fixed at 1 % w/v, and amounts of binders were varied in a range of 0.3 to 1 wt% based on the TiO content.

Solar photocatalytic degradation of carbaryl in water using TiO-coated filters with different binders and effect of the operating conditions.

This research focused on degradation of carbaryl in water using TiO-coated glass-fiber filter under sunlight irradiation. The coating substances were 0.3-2% w/v TiO mixed with 5 different binders, DURAMAX B1000, PEG molecular weight of 1000, 2000, 4000, and 6000, in a concentration of 0.

Effect of binders on airborne microorganism inactivation using TiO2 photocatalytic fluorescent lamps.

5% Degussa P25 TiO2 was spray-coated onto black-light and white-light fluorescent lamps, using five different binders, namely DURAMAX B-1000, DURAMAX D-3005, silane-69, and two polyethylene glycols with molecular weight 1000 (PEG-1000) and 700 (PEG-700). The coated lamps were tested with Staphylococcus epidermidis, Escherichia coli, spores of Bacillus subtilis and spores of Aspergillus niger. It was found that 0.

Preparation and photocatalytic activity of iron oxide-loaded potassium titanate layered compounds.

Iron oxide-loaded hydrous potassium tetratitanate (K0.3Ti4O7.3(OH)1.

Preparation of stable ultrahydrophobic and superoleophobic silica-based coating.

Silica-Based coatings having excellent water- and oil-repellent properties and good weathering stability have been deposited onto glass surface by a simple one-step dip coating technique. To achieve ultra water repellency and super oil repellency, the chemical composition of SiO2 nanoparticle employed as surface roughness enhancer and trichloro(1H,1H,2H,2H-perfluorooctyl)silane employed as surface-energy reducing substance was varied. At the optimum synthesis condition, the coating exhibited very high contact angles of 173.

Increasing active surface area to fabricate ultra-hydrophobic surface by using "Black silicon" with bosch etching process.

Needle-shaped pillars so-called "Black silicon" (B-Si) were fabricated by etching cleaned silicon wafer with fluorine-based deep reactive ion etching plasma. The B-Si pillar with the pillar size (a) and spacing (b) of 250 nm, and height (h) of 6.47 microm, coated with SiOxFy film had water contact angle (WCA) and ethylene glycol contact angle (ECA) of 159.

Hydrothermal synthesis and electrochromic properties of potassium tungsten oxide nanorods.

Hexagonal K2W4O13 nanorods have been synthesized by hydrothermal treatment of the WO3 x H2O precipitate at 180 degrees C in the presence of K2SO4. The K2W4O13 nanorod single crystals of approximately 12 nm in diameter and tens to few hundreds nm long with the principal axis along the (001) direction were obtained when hydrothermal treatment was conducted in the presence of sufficient amount of K2SO4 while shorter nanorods with the same preferred orientation were obtained when less amount of K2SO4 was employed. On the other hand, square platelets of approximately 100 nm wide were obtained when prepared in the absence of the K2SO4.

An effect of silicon micro-nano-patterning arrays on superhydrophobic surface.

Superhydrophobic surface can be fabricated by creating a rough surface at very fine scale and modify it with low-surface energy material. To obtain the optimum superhydrophobicity, the surface roughness must be maximized. To avoid the limitation of scaling down the pattern size by using an expensive lithography tools, the surface roughness factor (r) was increased by means of changing an asperity shape so as to increase its overall surface area.

Fabrication of silica-based multilayer films with self-cleaning and antireflective properties.

The silica-based multilayer films exhibiting both self-cleaning property and antireflection in the visible and near infrared regions have been deposited onto glass substrate by layer-by-layer deposition of PAH/PAA polyelectrolyte bilayers, followed by sequential deposition of PAH/SiO2 nanocomposite layers to create the nanoporous structure in the film, and finally treating with fluorosilane. To obtain the appropriate porosity and surface roughness so as to satisfy both antireflection and self-cleaning properties, the deposition of PAH/SiO2 nanocomposite layers was varied from 2 to 8 layers. Scanning electron microscopy and atomic force microscopy analysis revealed that a highly nanoporous structure was obtained from the more deposition of loosely agglomerated SiO2 nanoparticles which increased with the increased cycle of PAH/SiO2 deposition.

Performance of photocatalytic lamps on reduction of culturable airborne microorganism concentration.

Reduction of viable airborne Staphylococcus epidermidis and Aspergillus niger spore concentrations using two types of photocatalytic fluorescent lamps under controlled environmental conditions (25 vs. 35°C and 55 vs. 75% relative humidity) were investigated.