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Original Articles

Facile Synthesis of 2-Methylquinolines From Anilines on Mesoporous N-Doped TiO2 Under UV and Visible Light

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Pages 500-508 | Received 07 Apr 2012, Accepted 13 Oct 2012, Published online: 26 Feb 2013
 

Abstract

Nitrogen-doped TiO2 was synthesized by a simple wet method using a nitrogen precursor hydrazine hydrate and nano TiO2. This photocatalyst was characterized by X-ray diffraction, high-resolution transmission electron microscopy, diffused reflectance spectra, photoluminescence, and X-ray photoelectron spectroscopy. XPS analysis indicates the incorporation of anionic nitrogen in TiO2 lattice as O-Ti-N linkage. N2 adsorption–desorpion isotherm indicates the mesoporous nature of N-TiO2 with the surface area 130.0 m2/g. Sizes of N-TiO2 particles are found to be in the range of 5–30 nm by HRTEM images. DRS spectra reveal the extended absorption to the visible range. N-TiO2 is found to be more efficient than Ag-TiO2, Au-TiO2, and Pt-TiO2 in quinaldine synthesis under visible light.

Acknowledgments

The author (M. S.) thanks Council of Scientific and Industrial Research (CSIR), New Delhi, for the financial support through research grant No. 21 (0799)/10/EMR-II. Authors thank Prof. P. V. Satyam, IOP, Bhubaneswar, India for HRTEM measurements.

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