@article { ISI:000323644600048,
	title = {Enhanced dual-effect of adsorption and photodegradation of SiO2 embedded TiO2 hybrid catalyst for improved decolourization of methylene blue},
	journal = {Water Air and Soil Pollution},
	volume = {224},
	number = {9},
	year = {2013},
	month = {SEP},
	pages = {1726},
	publisher = {SPRINGER},
	address = {VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS},
	abstract = {<p>Dual-effects of adsorption and photodegradation over titania, silica embedded titania, silica and commercial Degussa P-25 samples were studied for the decolourization of methylene blue in aqueous medium. Silica embedded titania and silica were prepared using inexpensive polymeric version of ethyl silicate as a source of silica. Catalysts were characterized by X-ray diffraction, scanning electron microscopy, UV-Vis spectroscopy and low temperature (77 K) nitrogen adsorption measurements. Among all the catalysts, silica embedded titania has exhibited faster decolourization of methylene blue solution on account of the enhancement of adsorption followed by degradation. An amount of the catalyst and the initial dye concentration of MB solution were found to influence the decolourization activity. Compared to titania catalyst, silica embedded titania and Degussa P-25 have shown the red shift in their UV-Vis spectrum. The experimental data of the reaction fitted well to the pseudo first order kinetic model. In present studies, the adsorption mechanism for the decolourization of MB solution was found to be applicable for an intra particle diffusion model.</p>},
	keywords = {Adsorption, kinetic model, Methylene blue, Photodegradation, Silica embedded titania},
	issn = {0049-6979},
	doi = {10.1007/s11270-013-1726-7},
	author = {Sonar, Shilpa K. and Wagh, Reshma V. and Niphadkar, Prashant S. and Joshi, Praphulla N. and Deshpande, Shilpa S. and Awate, Shobhana V.}
}
@article { ISI:000331828400019,
	title = {Enhanced mineralization of gaseous organic pollutant by photo-oxidation using Au-Doped TiO2/MCM-41},
	journal = {Water Air and Soil Pollution},
	volume = {225},
	number = {2},
	year = {2014},
	month = {FEB},
	pages = {1847},
	publisher = {SPRINGER},
	type = {Article},
	address = {VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS},
	abstract = {<p>The synthesis, characterization, and photocatalytic evaluation of titania-loaded MCM-41 with and without Au doping are reported in the present study. The samples were characterized by powder XRD, TEM, low temperature N-2 adsorption/desorption, UV-Vis, and FTIR. UV-induced vapor-phase photo-oxidation of acetone was used as a probe reaction to study the role of Au in mineralization of volatile organic compounds (VOCs), viz. acetone at different concentrations. The doping of Au in titania-loaded MCM-41 resulted in the decrease of BET surface area, total pore volume, and average pore size. UV-Vis diffuse reflectance spectra of Au-doped titania-loaded MCM-41 showed the red shift in their absorption bands compared to titania-loaded MCM-41. The activity of mineralization of acetone by photocatalysis for 2 \% Au-doped titania-loaded MCM-41 was found to be similar to 1.6 times higher than titania-loaded MCM-41. The presence of cocatalytic nanosized gold might be responsible for their enhanced activity on account of the delayed recombination of electron/hole pair. Although, almost complete mineralization of acetone was observed irrespective of the initial concentration of acetone in air (up to 3.72 mol\%) by all the catalysts, 2 wt.\% Au-doped titania-loaded MCM-41 has shown the most enhanced activity.</p>},
	keywords = {Acetone, Doping, Gold, Mineralization of VOCs, Photo-oxidation, TiO2/MCM-41},
	issn = {0049-6979},
	doi = {10.1007/s11270-013-1847-z},
	author = {Tangale, Nilesh P. and Belhekar, Anuja A. and Kale, Kishor B. and Awate, Shobhana V.}
}
