Growth of g-C 3 N 4 Layer on Commercial TiO 2 for Enhanced Visible Light Photocatalytic Activity. (30th March 2014)

• Record Type: Journal Article
• Authors: Fu, Min; Liao, Jiazhen; Dong, Fan; Li, Hongmei; Liu, Hongyan
• Other Names: Wang Haiqiang Academic Editor.
• Is Part Of: Journal of nanomaterials. Volume 2014(2014)
• Publication Date: 2014-03-30
• Subjects: Nanostructured materials -- Periodicals; Nanotechnology -- Periodicals; Nanomatériaux; Nanostructured materials; Nanotechnology; Nanostructures; Nanotechnology; Periodicals; Fulltext; Internet Resources; Periodicals; 620.115
• DOI: 10.1155/2014/869094
• Languages: English
• ISSNs: 1687-4110

Abstract

Abstract : Novel visible light photocatalytic graphitic carbon nitride/TiO2 (g-C3 N4 /TiO2 ) composite samples were synthesized by heating mixtures of melamine and commercial TiO2 (TO) at different weight ratios. The samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), photoluminescence spectroscopy (PL), Fourier transform infrared spectroscopy (FTIR), and UV-visible diffused reflectance spectroscopy (UV-vis DRS). Characterization confirms formation of nanocomposites of g-C3 N4 /TiO2 . At the optimized precursor weight ratio (m elamine : m TiO 2 = 2.5 ), the samples exhibited highest adsorption capacity and visible light photocatalytic activity, measured by degradation of methylene blue (MB). Under visible light irradiation, the excited electrons on the surface of g-C3 N4 transfer easily to the conduction band (CB) of TiO2 via the well-built heterojunction. The g-C3 N4 /TiO2 nanocomposites exhibit enhanced visible light catalytic activity due to increased visible light adsorption and effective separation of photogenerated electron-hole pairs. These g-C3 N4 /TiO2 nanocomposites could find broad applicability in environmental protection due to their excellent visible light photocatalytic property and facile, cost-effective preparation process.