Synthesis of Porous g-C3N4 Loaded With Highly Dispersed PANI by Interfacial Polymerization and Its Photocatalytic Performance

doi:10.15541/jim20150092

Abstract

Abstract:

Polyaniline (PANI) was successfully loaded on porous graphitic carbon nitride (porous g-C₃N₄) by interfacial polymerization of aniline monomers. The structure, morphology and properties of the prepared samples were characterized by XRD, FTIR, SEM, TGA, UV-Vis and Electrochemical Impedance Spectroscope (EIS). Photocatalytic degradation of methylene blue was investigated to determine the photoactivity of the catalyst. The porous g-C₃N₄ showed good dispersion and interfacial adhesion to PANI, which improved the photocatalytic degradation of methylene blue and thermal stability. The improved photocatalytic activity could be attributed to the improved visible light utilization, oxidation power and electron transport property.

Key words: porous g-C3N4, PANI, thermal stability, interfacial polymerization, photocatalytic performance

CLC Number:

TQ174

LI Xian-Hua, ZHANG Lei-Gang, WANG Xue-Xue, YU Qing-Bo. Synthesis of Porous g-C₃N₄ Loaded With Highly Dispersed PANI by Interfacial Polymerization and Its Photocatalytic Performance[J]. Journal of Inorganic Materials, 2015, 30(10): 1018-1024.

Figures/Tables 7

Fig. 1 Adsorption of samples under dark conditions

Fig. 2 (a) XRD, (b) FTIR spectra and (c) nitrogen adsorption-desorption isotherms of porous g-C3N4 (1), PANI (2), and the porous g-C3N4/PANI composite (3)

Fig. 3 Typical SEM images of porous g-C3N4 at (high (a) and low (d) magnification), PANI (b), and the porous g-C3N4/PANI composite at (high (b) and low (e) magnification)

Fig. 4 Schematic presentation for fabrication of porous g-C3N4/PANI composite

Fig. 5 (a) TGA curves, (b) UV-Vis absorption spectrum, (c) plots of (αhν)2 vs photon energy (hν) for the band gap energy, and (d) Mott-Schottky plots for PANI nanorods (1), porous g-C3N4/PANI composite (2), and porous g-C3N4 (3)

Fig. 6 Photocurrent densities (a) and EIS spectra (b) of porous g-C3N4/PANI composite (1) and porous g-C3N4 (2)

Fig. 7 Photocatalytic effect of the samples process of photocatalytic degradation of MB under visible light irradiation (λ>400 nm), (b) first-order plots for the photodegradation of MB, (c) recycle test of porous g-C3N4/PANI composite catalyst, and (d) photocatalytic degradation of MB in the presence of different ratio of porous g-C3N4/PANI

References 18

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Synthesis of Porous g-C₃N₄ Loaded With Highly Dispersed PANI by Interfacial Polymerization and Its Photocatalytic Performance

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