Photocatalytic degradation of organic pollutants in water and in air. An analytical approach

Photocatalytic degradation of orange II on the novel hetero-system WS2/TiO2 under UV light

“…In this respect, the advanced oxidation process (AOP) has emerged as a promising technique for the remediation of the aquatic environment, particularly for the effluents produced by the textile industry [3][4][5][6]. The SC-liquid junction may be viewed as infinity of micro-photo-electrochemical (PEC) cells.…”

Phase composition, crystal structure and microstructure of silver and tungsten doped TiO2 nanopowders with tuneable photochromic behaviour

“…Photocatalysis is a very promising method of solving problems associated with increasing environmental pollution, energy production and storage, and global warming. It can degrade organic and inorganic chemicals in both air and water [17,18], and the possible intermediates of the reactions are not dangerous, or at least less dangerous than the original pollutant [19]. It can be used for water splitting in order to produce hydrogen gas without the generation of pollutants [20].…”

Removal of gaseous toluene by the combination of photocatalytic oxidation under complex light irradiation of UV and visible light and biological process

“…Toluene can be effectively treated in a composite membrane bioreactor with a selected aerobic mixed culture [31] or a laboratory-scale biofilm membrane bioreactor inoculated with Burkholderia vietnamiensis G4 [32]. But, photocatalysis may cause secondary pollution during the photocatalysis degradation, various intermediates are formed and some of them can be more toxic and in some cases more persistent than the parent compound [33]; the main by-products in the gas-phase resulting from photocatalytic oxidation of toluene were benzaldehyde, methanol, acetaldehyde, acetone/propionaldehyde, formic acid/ethanol and acetic acid, benzoic acid, hydroquinone, benzylic alcohol, and cresols [34][35]. The biofilter process may run instability and slow adaptation to fluctuating concentrations in waste gas, thus decrease the VOCs removal efficiency due to environmental conditions.…”