Synthesis, characterization and enhanced photoconductivity from a mesoporous titania on dye doping

Analytica Chimica Acta
Nabanita PalAsim Bhaumik

Abstract

New wormhole-like mesoporous TiO(2) material has been synthesized through a convenient sol-gel method in the presence of a Schiff base secondary amine hexadecyl-2-pyrrole-methylamine (HPMA) containing chelating donor sites as template or structure directing agent (SDA). SDA molecules can be easily removed from the composite to generate mesoporosity and upon removal of the SDA molecule, this mesoporous TiO(2) material showed very high surface area (480+/-10 m(2)/g) with an average pore diameter of 2.57+/-0.05 nm. When Rose Bengal dye is entrapped inside the nanopores of this material, it showed a drastic enhancement (ca. 40-folds) in the photoconductivity vis-à-vis mesoporous TiO(2) alone under white light illumination.

References

Sep 15, 2007·Angewandte Chemie·María Vallet-RegíDaniel Arcos
Apr 2, 2010·ACS Applied Materials & Interfaces·Ashok Bera, Durga Basak

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Citations

Feb 18, 2012·ACS Applied Materials & Interfaces·Saikat DuttaBasudeb Saha
Feb 14, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Malay PramanikAsim Bhaumik

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