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J. Wang, R. Li, Z. Zhang, W. Sun, X. Wang, R. Xu, Z. Xing and X. Zhang, “Degradation of Hazardous Dyes in Wastewater Using Nanometer Mixed Crystal TiO2 Powders under Visible Light Irradiation,” Water Air Soil Pollution, Vol. 189, No. 1-4, 2008, pp. 225-237. doi:10.1007/s11270-007-9570-2

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• TITLE: TiO2-Polysulfone Beads for Use in Photo Oxidation of Rhodamine B

  AUTHORS: Sanjay V. Ingale, Pratap B. Wagh, Arvind K. Tripathi, Rohit Srivastav Srivastav, Imejinary K. Singh, Ramesh C. Bindal, Satish C. Gupta

  KEYWORDS: Photo Oxidation; Rhodamine B; TiO2

  JOURNAL NAME: Soft Nanoscience Letters, Vol.2 No.4, October 16, 2012

  ABSTRACT: The nano sized TiO2 has been synthesized by sol gel process. The titaniumisopropaxide diluted in propanol hydrolyzed under acidic condition to form a gel. The solvent from gel pores has been extracted at ambient pressure resulting in nano sized TiO2 crystallites. The crystalline phase of TiO2 could be assigned to anatase structure. An average crystallite size is about 12 nm. The surface area of TiO2 found to be 235 m2/g. The TiO2 nanocrystallites thus produced were blended with polysulphone to form its beads for ease of operation. These beads of TiO2 were used as photo catalyst in conjunction with H2O2 oxidizer in presence of UV light (254 nm) for treating the 50 ppm Rhodamine B aqueous solution. The solution decolorized within 10 minutes resulting in disappearance of absorption peak at around 600 nm in UV spectrometry. The organic entities degrade in about 60 minutes. The beads of nano sized TiO2 could be easily recovered from the treated effluent for further use.