Effect of aggregation of dyes adsorbed on nanocrystalline titania films on the efficiency of photodegradation
作者： Nikoleta Strataki , Vlasoula Bekiari , Elias Stathatos , Panagiotis Lianos
DOI: 10.1016/J.JPHOTOCHEM.2007.03.023
关键词:
摘要: The conditions of adsorption some dyes from aqueous solutions on nanocrystalline titania film have been studied. Adsorption follows Langmuir kinetics. Ionic the tendency to aggregate in adsorbed state. Aggregates are easily distinguished by absorption spectrophotometry, since light is observed at a different wavelength than monomer dilute solution. In all cases, aggregation demonstrated hypsochromic shift, indicating repulsive interactions, which justified view fact that surface charged and molecules aligned with dipole moments parallel. For given film, extent dye shift spectrum varies one other. Some blue demonstrate very large shifts. Photodegradation rates were slow case aggregated dyes. It concluded main cause for this deficiency aggregation, apparently inhibits interaction photocatalyst. These results may be useful photocatalytic treatment waste waters, particular, textile industry.
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sci-hub.se 参考文章(25)
Bernd Neumann, Klaus Huber, Peter Pollmann, A comparative experimental study of the aggregation of Acid Red 266 in aqueous solution by use of 19F-NMR, UV/Vis spectroscopy and static light scattering Physical Chemistry Chemical Physics. ,vol. 2, pp. 3687- 3695 ,(2000) , 10.1039/B004172F
Guangming Liu, Xiangzhong Li, Jincai Zhao, Hisao Hidaka, Nick Serpone, Photooxidation Pathway of Sulforhodamine-B. Dependence on the Adsorption Mode on TiO2 Exposed to Visible Light Radiation Environmental Science & Technology. ,vol. 34, pp. 3982- 3990 ,(2000) , 10.1021/ES001064C
Elias Stathatos, Panagiotis Lianos, Christos Tsakiroglou, Metachromatic effects and photodegradation of basic blue on nanocrystalline titania films. Langmuir. ,vol. 20, pp. 9103- 9107 ,(2004) , 10.1021/LA048788C
T Vengris, R Binkien≐, A Sveikauskait≐, Nickel, copper and zinc removal from waste water by a modified clay sorbent Applied Clay Science. ,vol. 18, pp. 183- 190 ,(2001) , 10.1016/S0169-1317(00)00036-3
Abdelhamid Sayari, Safia Hamoudi, Yong Yang, Applications of Pore-Expanded Mesoporous Silica. 1. Removal of Heavy Metal Cations and Organic Pollutants from Wastewater Chemistry of Materials. ,vol. 17, pp. 212- 216 ,(2005) , 10.1021/CM048393E
Shihong Ma, Xingze Lu, Jie Song, Liying Liu, Wenji Peng, Jianying Zhou, Zhenxin Yu, Wencheng Wang, Zhiming Zhang, Time-Resolved Fluorescence Investigations on the Aggregation Behavior in Phenylhydrazone and Hemicyanine Langmuir-Blodgett Multilayers Langmuir. ,vol. 11, pp. 2751- 2754 ,(1995) , 10.1021/LA00007A067
Jincai Zhao, Kaiqun Wu, Taixing Wu, Hisao Hidaka, Nick Serpone, Photodegradation of dyes with poor solubility in an aqueous surfactant/TiO2 dispersion under visible light irradiation Journal of the Chemical Society, Faraday Transactions. ,vol. 94, pp. 673- 676 ,(1998) , 10.1039/A707599E
Catherine Galindo, Patrice Jacques, André Kalt, Photooxidation of the phenylazonaphthol AO20 on TIO2: kinetic and mechanistic investigations. Chemosphere. ,vol. 45, pp. 997- 1005 ,(2001) , 10.1016/S0045-6535(01)00118-7
Hu Chun, Wang Yizhong, Tang Hongxiao, Influence of adsorption on the photodegradation of various dyes using surface bond-conjugated TiO2/SiO2 photocatalyst Applied Catalysis B-environmental. ,vol. 35, pp. 95- 105 ,(2001) , 10.1016/S0926-3373(01)00236-3
Scot T. Martin, Janet M. Kesselman, David S. Park, Nathan S. Lewis, Michael R. Hoffmann, Surface Structures of 4-Chlorocatechol Adsorbed on Titanium Dioxide Environmental Science & Technology. ,vol. 30, pp. 2535- 2542 ,(1996) , 10.1021/ES950872E