TiO2 Supported in Ceramic Foams Used for Photocatalytic Applications

The study evaluated the photocatalytic activity of TiO2 supported on ceramic foams. In order to obtain these foams it was used a polymeric spongeprocess through replica method. Alumina ceramic foams were obtained with interconnected and open cellular structures allowing access of light through the material pores. The photocatalyst used was the commercial TiO2 P25 Degussa impregnated into the ceramic foam by dip-coating method. These steps were used in the photodegradation of organic dye in an aqueous system. The photocatalytic tests showed 81 % efficiency in decolorizing the solution of Rhodamine B 20 mg L- 1 with a kinetic constant of 9.6 x 10-3 min- 1

[1]  I. Perry,et al.  Anemia associated with autism spectrum disorder , 2016 .

[2]  Adriane Lawisch Rodríguez,et al.  Impregnação de catalisadores em suporte de espuma cerâmica de alumina (Impregnation of catalysts on support of alumina ceramic foam) , 2014 .

[3]  A. Fujishima,et al.  TiO2 photocatalysis: Design and applications , 2012 .

[4]  R. Lago,et al.  TiO2/LDPE composites: A new floating photocatalyst for solar degradation of organic contaminants , 2011 .

[5]  G. Plesch,et al.  TiO2 thick films supported on reticulated macroporous Al2O3 foams and their photoactivity in phenol mineralization , 2011 .

[6]  G. Plesch,et al.  Reticulated macroporous ceramic foam supported TiO2 for photocatalytic applications , 2009 .

[7]  M. Rodrigues.  Preparação e caracterização de fotocatalisadores imobilizados em vidro , 2007 .

[8]  André R. Studart,et al.  Processing Routes to Macroporous Ceramics: A Review , 2006 .

[9]  Valter Maurino,et al.  Degradation of phenol and benzoic acid in the presence of a TiO2-based heterogeneous photocatalyst , 2005 .

[10]  Frank H. Quina.  Nanotecnologia e o meio ambiente: perspectivas e riscos , 2004 .

[11]  K. R. Thampi,et al.  Photocatalytic degradation of atrazine using suspended and supported TiO2 , 2004 .

[12]  Eric McAdams,et al.  Intrinsic kinetics of photocatalytic oxidation of formic and oxalic acid on immobilised TiO2 films , 2004 .

[13]  William H. Glaze,et al.  The Chemistry of Water Treatment Processes Involving Ozone, Hydrogen Peroxide and Ultraviolet Radiation , 1987 .