A convenient sol-gel route for the synthesis of salicylate-titania nanocomposites having visible absorption and blue luminescence

Journal Article · Fri May 15 00:00:00 EDT 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.02.004· OSTI ID:21370398

Mitra, Atanu ^[1]; Bhaumik, Asim ^[1]; Nandi, Mahasweta; Mondal, John ^[1]; Roy, B K ^[2]

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1. Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032 (India)
2. Haldia Government College, Purba Medinipur 721657, West Bengal (India)

Syntheses of titania-based nanomaterials by simple sol-gel route using a mixture of CTAB and salicylate as well as salicylate ions as templates have been reported. The materials are characterized by the powder X-ray diffraction (XRD), thermal analysis, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and spectroscopic (FT IR, UV-VIS) analyses. A disordered mesoscale orientation of nanoparticles (ca. 2-4 nm) composed of TiO{sub 2}-salicylate surface complex has been obtained when 1:1 mixing ratio of CTAB and salicylate at the CTAB concentration of 0.001 M was employed as a template. All these nanocomposites exhibit a considerable red shift at the onsets of their absorption band compared to pure (organic-free) nanocrystalline TiO{sub 2} and show blue luminescence at room temperature. This assembly of nanoparticles is highly interesting in the context of visible light sensitization and nanodevice fabrication. - Graphical abstract: A new titania-salicylate nanostructure material has been synthesized, which exhibit a considerable red shift towards the visible region vis-a-vis nanocrystalline (organic-free) TiO{sub 2} and blue luminescence at room temperature.

• OSTI ID: 21370398
• Journal Information: Journal of Solid State Chemistry, Vol. 182, Issue 5; Other Information: DOI: 10.1016/j.jssc.2009.02.004; PII: S0022-4596(09)00048-6; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
COMPOSITE MATERIALS
INFRARED SPECTRA
LUMINESCENCE
NANOSTRUCTURES
RED SHIFT
SCANNING ELECTRON MICROSCOPY
SOL-GEL PROCESS
TEMPERATURE RANGE 0273-0400 K
THERMAL ANALYSIS
TITANIUM OXIDES
TRANSMISSION ELECTRON MICROSCOPY
ULTRAVIOLET SPECTRA
VISIBLE SPECTRA
X-RAY DIFFRACTION
CHALCOGENIDES
COHERENT SCATTERING
DIFFRACTION
ELECTRON MICROSCOPY
EMISSION
MATERIALS
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PHOTON EMISSION
SCATTERING
SPECTRA
TEMPERATURE RANGE
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS