naa a22 4500 510820492 CHVBK 20180411083529.0 cr unu---uuuuu 180411e20131001xx s 000 0 eng 10.1007/s11814-013-0125-5 doi (NATIONALLICENCE)springer-10.1007/s11814-013-0125-5 Characterization of TiO2-coated ceramic foam prepared by modified sol-gel method and optimization of synthesis parameters in photodegradation of Acid Red 73 [Elektronische Daten] [Somayeh Alijani, Abdolsamad Moghaddam, Mohammad Vaez, Jafar Towfighi] TiO2 nanoparticles were synthesized by the P-25 powder modified sol-gel method under different TTIP (Titanium tetraisopropoxide) concentrations, P-25 loading and the gelation pHs. Structural properties of nanoparticles were characterized by XRD, FESEM and BET analysis. Results show that crystallinity level, particle size and the surface area are a function of P-25 loading and gelation pH, whereas TTIP concentration affects only the crystalline composition. Response surface methodology based on central composite design was used to optimize these synthesis parameters in photodegradation of Acid Red 73. The degradation efficiency was significantly affected by P-25 loading, pH value of gelation and the interaction effect between TTIP concentration and P-25 loading. The optimal values of parameters were found to be a pH of 1.34, a TTIP concentration of 0.25M and a P-25 loading of 39.76 g/L. At optimal synthesis conditions, TiO2 film was coated on alumina foam and its structural properties were characterized by XRD, SEM and BET technique. The photocatalytic activity of the as-prepared films was found to be higher than that of the films prepared by the sol-gel method and those made from the slurries of P-25. The reasonable photocatalytic performance and good stability offered by the optimized film make it as an effective alternative for large application of water treatment. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Titanium Dioxide nationallicence Modified Sol-gel Method nationallicence Structural Properties nationallicence Response Surface Methodology nationallicence Immobilization on Alumina Foam nationallicence Alijani Somayeh Department of Chemical Engineering, Tarbiat Modares University, Jalal Ale Ahmad Highway, P. O. Box 14155-143, Tehran, Iran aut Moghaddam Abdolsamad Department of Chemical Engineering, Tarbiat Modares University, Jalal Ale Ahmad Highway, P. O. Box 14155-143, Tehran, Iran aut Vaez Mohammad Department of Chemical Engineering, Tarbiat Modares University, Jalal Ale Ahmad Highway, P. O. Box 14155-143, Tehran, Iran aut Towfighi Jafar Department of Chemical Engineering, Tarbiat Modares University, Jalal Ale Ahmad Highway, P. O. Box 14155-143, Tehran, Iran aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/10(2013-10-01), 1855-1866 0256-1115 30:10<1855 2013 30 11814 https://doi.org/10.1007/s11814-013-0125-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-013-0125-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Alijani Somayeh Department of Chemical Engineering, Tarbiat Modares University, Jalal Ale Ahmad Highway, P. O. Box 14155-143, Tehran, Iran aut NATIONALLICENCE 700 1- Moghaddam Abdolsamad Department of Chemical Engineering, Tarbiat Modares University, Jalal Ale Ahmad Highway, P. O. Box 14155-143, Tehran, Iran aut NATIONALLICENCE 700 1- Vaez Mohammad Department of Chemical Engineering, Tarbiat Modares University, Jalal Ale Ahmad Highway, P. O. Box 14155-143, Tehran, Iran aut NATIONALLICENCE 700 1- Towfighi Jafar Department of Chemical Engineering, Tarbiat Modares University, Jalal Ale Ahmad Highway, P. O. Box 14155-143, Tehran, Iran aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/10(2013-10-01), 1855-1866 0256-1115 30:10<1855 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer