Preparation and characterization of a magnetically separated photocatalyst and its catalytic properties

Enhanced photocatalytic activity of TiO2 by doping with Ag for degradation of 2,4,6-trichlorophenol in aqueous suspension

“…In which 21 mL of Ti(O-Bu) 4 was added into 80 mL of absolute ethanol, and the resulting Ti(O-Bu) 4 -ethanol solution was stirred in an ice bath, and then 2 mL of water and 0.2 mL of HNO 3 (50%) were added to another 80 mL of ethanol to make an ethanol-water-HNO 3 solution. The ethanol-water-HNO 3 solution was slowly added to the Ti(O-Bu) 4 -ethanol solution under stirring and cooling with ice [11]. When the resulting mixture turned to be sol, the AgNO 3 solution was dripped in it.…”

Degradation of Acid Orange 7 using magnetic AgBr under visible light: The roles of oxidizing species

“…Though the immobilized photocatalysts were easy to be recovered, the remarkable reduction on their photocatalytic activities was observed to a considerable extent due to the lack of effective surface area and low mass transfer rate (Chung et al, 2004). Recently, magnetically separable photocatalysts were suggested and proven to be a good solution for the catalyst separation (Chen et al, 2001;Gao et al, 2003;Xu et al, 2007). The size of the photocatalyst could be intentionally manipulated by controlling the size of the magnetic core materials.…”

Sonochemical synthesis and characterization of magnetic separable Fe3O4–TiO2nanocomposites and their catalytic properties

“…This presents a major drawback to the application of the hybrid catalyst for treating wastewaters. To overcome the problem of catalyst recovery, a magnetic photocatalyst, comprising a magnetic core coated with photoactive titanium oxide layer, has been developed [7][8][9][10][11][12][13][14][15][16][17][18][19]. The fabrication of the magnetic photocatalyst is based on the magnetic separation technique, providing a solution to the solid-liquid separation problem of the photocatalyst particles from the suspended photoreactors.…”