TiO2 and TiO2-activated carbon (AC) photocatalysts have been prepared (by sol-gel synthesis), characterized, tested in the removal of diuron from water under simulated solar light. The preparation variables two series catalysts are: (i) heat-treatment temperature bare (350, 400, 450 500 °C) (ii) activated content (0.5, 1, 5, 10 wt.%) TiO2-AC samples heat-treated at 350 °C. was previously by hyd...

Hydrogenated titanium dioxide has attracted intensive research interests in pollutant removal applications due to its high photocatalytic activity. Herein, we demonstrate hydrogenated TiO2 nanofibers (H:TiO2 NFs) with a core-shell structure prepared by the hydrothermal synthesis and subsequent heat treatment in hydrogen flow. H:TiO2 NFs has excellent solar light absorption and photogenerated ch...

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 practical point view. One these large specific surface, which makes this material promising for use in photocatalysts, sensors, solar cells, etc. In work, we prepared photocatalysts based on TiO2 nanotubes converting carbon (CO2) i...

Combinations of TiO2 photocatalysts and various adsorbents have been widely studied for the adsorption and photocatalytic decomposition of gaseous pollutants such as volatile organic compounds (VOCs). Herein, a TiO2-zeolite-porous glass composite was prepared using melt-quenching and partial sintering, hydrothermal treatment, and drop coating for preparation of the porous glass support and X-ze...

this study investigated the photocatalytic behaviors for the nanocomposite of tio2 p25 and semnan natural zeolite in the decomposition of tetracycline under visible light in an aqueous solution. the structural features of the composite were investigated by a series of complementary techniques that included x-ray diffractometer (xrd), fourier transform infrared spectroscopy (ftir), scanning elec...

Our work is aimed at studying the abatement of volatile organic compounds produced by photocatalysts working in different light spectra, investigating best catalyst able to treat propane air mixtures high concentrations order thousands ppm. The experimental data were analyzed extract relevant parameters and compare catalytic activities three photocatalysts, TiO2, WO3, their mixtures. In a react...

Slow kinetics is one of the capital issues photocatalytic technology because its heterogeneous nature, which involves multi-step processes. Herein, we show that simple modification sol-gel-based TiO2-smectite composite by hexadecyltrimethylammonium bromide (HDTMA) significantly boosts adsorption and efficient light towards removal diclofenac from water. Three photocatalysts were prepared, inclu...

Organic pollutant is an environmentally harmful and ubiquitous aquatic with extensive production application. In this study, a unique novel TiO2-based dual-sensitized heterojunction photocatalyst (PbS/CdS/TiO2) was successfully obtained by one step hydrothermal method, chemical bath deposition (CBD) method ionic layer adsorption reaction (SILAR) method. Scanning electron microscopy, X-ray photo...

The kinetics of the photocatalytic degradation of 2-naphthol has been investigated in aqueous suspensions of titanium dioxide (TiO2) under a variety of conditions, which is essential from application point of view. The degradation was studied using different parameters such as types of TiO2, catalyst concentration, substrate concentration, reaction pH and in the presence of different electron a...

CuGaS2, (AgInS2)x-(ZnS)2-2x, Ag2ZnGeS4, Ni- or Pb-doped ZnS, (ZnS)0.9-(CuCl)0.1, and ZnGa0.5In1.5S4 showed activities for CO2 reduction to form CO and/or HCOOH in an aqueous solution containing K2SO3 and Na2S as electron donors under visible light irradiation. Among them, CuGaS2 and Ni-doped ZnS photocatalysts showed relatively high activities for CO and HCOOH formation, respectively. CuGaS2 wa...