Simulated sunlight photodegradation of aqueous phthalate esters catalyzed by the polyoxotungstate/titania nanocomposite

Photocatalytic ozonation of dimethyl phthalate with TiO2 prepared by a hydrothermal method

“…Recently, there are a few publications on the ozonation of DMP to study its degradation and TOC removal with the presence of catalyst or UV radiation [17][18][19][20][21][22][23], such as the catalytic ozonation of DMP in the presence of heterogeneous Ru/Al 2 O 3 , Ru or Ce/AC (activated carbon) catalyst [17][18][19]. The results indicated that the mineralization of DMP during ozonation could be promoted by the use of Ru/Al 2 O 3 , Ru or Ce/AC catalyst because of improvement of mass transfer, but the preparation of Ru/Al 2 O 3 , Ru/AC catalyst is relatively expensive.…”

“…In addition, the catalytic ozonation (with high silica zeolites or Pt/Al 2 O 3 as a catalyst) of DMP in the presence of UV radiation emitting principally at 254 nm studied [20][21][22]. Their results also indicated that the degradation and mineralization of DMP during ozonation could be promoted by UV radiation at 254 nm (a higher energy supply), but the preparation of the photocatalyst (high silica zeolites, porous polyoxotungstate/titania nanocomposites or Pt/Al 2 O 3 ) is complicated and expensive [21][22][23].…”

Heteropolyacid‐Based Materials as Heterogeneous Photocatalysts

“…The H 3 PW 12 O 40 /TiO 2 composite material prepared by Guo et al by their usual method was also successfully applied to the degradation/mineralization of aqueous phthalate esters, di-n-butyl phthalate (DBP), diethyl phthalate (DEP), and dimethyl phthalate (DMP), under simulated sunlight irradiation (Xe lamp). [61] Degradation of DBP, DEP, and DMP reached 98, 84, and 80 %, respectively, after 90 min, and nearly total mineralization of DBP and DEP was achieved after a reaction time of 12 h. The authors attributed the photocatalytic performance of these composites to a synergistic effect between the Keggin unit and the TiO 2 network. The synergism can be explained not only by considering the presence of · OH, h + , and O 2…”

“…[56][57][58][59][60][61] A composite material prepared as a hydrogel by mixing titanium isopropoxide with a H 3 PW 12 O 40 solution was used. The material was successively autoclaved and calcined.…”

Well-dispersed polyimide/TiO2 nanocomposites: in situ sol–gel fabrication and morphological study

“…The other component-titania-has one of the highest industrial and academic consumptions and plays a significant role in the nanotechnology world [12][13][14][15][16]. A large number of publications have been specialized for the production of nanocomposites containing well-dispersed titania nanoparticles for a wide variety of applications [3][4][5][6].…”