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Journal of Materials Science
Erschienen in: Journal of Materials Science 1/2018

31.08.2017 | Composites

Dielectric and optical properties of graphitic carbon nitride–titanium dioxide nanocomposite with enhanced charge seperation

verfasst von: Saurabh Pareek, Jitendra Kumar Quamara

Erschienen in: Journal of Materials Science | Ausgabe 1/2018

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Abstract

Graphitic carbon nitride (g-C3N4) a polymeric semiconductor material is appealing research topic because of enhanced absorption capability in visible region. g-C3N4–TiO2 composite material was prepared with varying composition (g-C3N4: TiO2) in the range of 0.25:1–2:1 and studied using various characterization techniques including X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) and FTIR spectroscopy for structural and morphological analysis. Optical properties were studied using UV–Vis, and photoluminescence (PL) spectroscopic techniques and dielectric properties were studied using impedance analyser. UV–visible spectra show a shift toward the higher wavelength region in composite owing to the decrease in the band gap value of g-C3N4–TiO2 composites. The dielectric constant was found increased with increasing content of g-C3N4 till the composition of 1.5:1 and decreased for higher content. The optimum composition based on above studies was found to be 1:1 and 1.5:1 with optical absorption in the range of 280–420 nm covering UV and small portion of visible light, and recombination of photogenerated charge carriers were also reduced compared to g-C3N4.
Vorheriger Artikel Synthesis, characterization, thermal properties, conductivity and sensor application study of polyaniline/cerium-doped titanium dioxide nanocomposites
Nächster Artikel Preparation of TiO2/graphene composite with appropriate N-doping ratio for humic acid removal

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Metadaten
Titel
Dielectric and optical properties of graphitic carbon nitride–titanium dioxide nanocomposite with enhanced charge seperation
verfasst von
Saurabh Pareek
Jitendra Kumar Quamara
Publikationsdatum
31.08.2017
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 1/2018
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-017-1506-7

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