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Investigators from Central Leather Research Institute Have Reported New Data on Nanoporous (Photoprocesses of molecules encapsulated in porous solids...

August 1, 2014



Investigators from Central Leather Research Institute Have Reported New Data on Nanoporous (Photoprocesses of molecules encapsulated in porous solids XI: Excited state dynamics of proflavine and photosensitization of TiO2 in nanoporous materials)

By a News Reporter-Staff News Editor at Science Letter -- Investigators publish new report on Nanoporous. According to news reporting originating from Tamil Nadu, India, by NewsRx correspondents, research stated, "Photosensitization of titanium dioxide (TiO2) encapsulated in the nanoporous materials of different pore size using proflavine dye as the sensitizer was studied using steady state and time resolved fluorescence spectral techniques. The titanium dioxide encapsulated nanoporous materials was prepared by ion exchange method and were characterized by UV-visible diffuse reflectance spectra, ICP-OES, BET and powder XRD techniques."

Our news editors obtained a quote from the research from Central Leather Research Institute, "The observed results show that TiO2 were encapsulated in the nanochannels and nanocavities of the host materials. The photophysical properties of proflavine are found to be influenced by the pore size and the Si/A1 ratio of the host materials. Photosensitization of TiO2 in the host by proflavine was inferred from the decreased stead state fluorescence intensity of the dye molecule. In the case of the dye encapsulated TiO2 loaded ZSM-5, fluorescence intensity decreases with red shifted emission maximum. Excitation of proflavine in presence of TiO2 nanoparticles leads to protonation of proflavine in the excited state as confirmed in ultrafast time resolved fluorescence and decay associated spectral studies."

According to the news editors, the research concluded: "On the other hand, no protonated proflavine was detected when zeolite-Y and MCM41 were used as the host material."

For more information on this research see: Photoprocesses of molecules encapsulated in porous solids XI: Excited state dynamics of proflavine and photosensitization of TiO2 in nanoporous materials. Microporous and Mesoporous Materials, 2014;195():124-130. Microporous and Mesoporous Materials can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Microporous and Mesoporous Materials - www.elsevier.com/wps/product/cws_home/600760)

The news editors report that additional information may be obtained by contacting K. Senthilkumar, CSIR, Cent Leather Res Inst, Chem Lab, Madras 600020, Tamil Nadu, India. Additional authors for this research include S.C. Mohan, S. Easwaramoorthi, K. Jothivenkatachalam and P. Natarajan (see also Nanoporous).

Keywords for this news article include: Tamil Nadu, India, Asia, Chemicals, Chemistry, Emerging Technologies, Nanoporous, Nanotechnology, Titanium Dioxide

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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