Construction of a ternary g-CN/TiO@polyaniline nanocomposite for the enhanced photocatalytic activity under solar light.

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ID: 14600
2019
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Abstract
The combination of two or more semiconductor materials for the synthesis of new hybrid photocatalyst could be a good approach to enhance the visible light absorption, electron-hole (e/h) pair separation rate and photocatalytic decomposition of the organic contaminants. Herein, a facile in situ oxidative polymerization method has been used for the synthesis of visible light active g-CN/TiO@polyaniline (g-CN/TiO@PANI) nanocomposite for the decomposition of the congo red (CR) under the solar light irradiation. Prior to making the composite of TiO (P25) with g-CN and polyaniline, a lamellar structure was generated onto the TiO brim by alkali hydrothermal treatment to enhance the surface area and adsorption properties. The PL and UV-visible analysis clearly showed the fast separation of the e/h pair, and reduction in the bandgap energy of the g-CN/TiO@PANI nanocomposite. The results revealed TiO, PANI and g-CN showed the synergestic behavior in the g-CN/TiO@PANI nanocomposite and greatly enhanced the photocatalytic degradation of the CR. The photocatalytic decomposition of the CR was almost 100% for 20 mg/L at pH 5, 7 and 180 min. The reusability study of the spent catalyst showed the 90% degradation of CR after four consecutive cycles indicate that g-CN/TiO@PANI nanocomposite is a stable and efficient catalyst. The high efficiency and reusability of the g-CN/TiO@PANI nanocomposite could be attributed to the higher visible light absorption and sensitizing effect of the g-CN and PANI.
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alenizi2019constructionscientific Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Alenizi, M A;Kumar, Rajeev;Aslam, M;Alseroury, F A;Barakat, M A;
Journal Scientific reports
Year 2019
DOI
10.1038/s41598-019-48516-3
URL
Keywords Keywords not found

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