Synthesis and Characterization of Zinc Phthalocyanine/Mesoporous Carbon Nitride Nanocomposites

Abstract:

In this work, zinc phthalocyanine (ZnPc) was impregnated onto mesoporous carbon nitride (m-C₃N₄) to expand its absorption to longer wavelength. Nitrogen adsorption-desorption isotherm confirmed that the m-C₃N₄ showed type IV of adsorption-desorption isotherm. Transmission electron microscopy (TEM) revealed the presence of both nanosphere and nanoworm structure in the m-C₃N₄. Thermogravimetric analysis (TGA) showed that the synthesized m-C₃N₄ was thermally stable until 723 K. The presence of ZnPc on the m-C₃N₄ was confirmed from the X-ray diffraction (XRD) patterns and diffuse reflectance ultraviolet-visible (DR UV-Vis) spectra. The higher the amount of ZnPc loaded on m-C₃N₄, the higher the intensity of ZnPc peaks in the diffraction patterns. The successful impregnation of ZnPc onto the m-C₃N₄ was also supported by the color changing of the solids from yellow to blue, which can be seen as an additional broad band at 500-900 nm from the absorption spectra. Since the material gives visible light absorption, it is expected that the ZnPc/m-C₃N₄ would be a potential photocatalyst for reactions conducted under visible light irradiation.

• Periodical: Advanced Materials Research (Volume 364)
• Pages: 363-367
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.364.363
• Online since: October 2011
• Authors: Shu Chin Lee, Hendrik O. Lintang, Yuliati Leny
• Keywords: Mesoporous Carbon Nitride, Photocatalyst, Visible Light Absorption, Zinc Phthalocyanine

References

[1] X. Wang, K. Maeda, X. Chen, K. Takanabe, K. Domen, Y. Hou, X. Fu and M. Antonietti: J. Am. Chem. Soc. Vol. 131 (2009), p.1680.

[2] X. Chen, Y.S. Jun, K. Takanabe, K. Maeda, K. Domen, X. Fu, M. Antonietti and X. Wang: Chem. Mater. Vol. 21 (2009), p.4093.

[3] S.C. Yan, Z.S. Li, and Z.G. Zou: Langmuir Vol. 25 (2009), p.10397.

[4] A.E.H. Machado, M.D. Franca, V. Velani, G.A. Magnino, H.M.M. Velani, F.S. Freitas, P.S.M. Jr., C. Sattler and M. Schmücker: Int. J. Photoenergy Vol. 2008 (2008), p.1.

DOI: 10.1155/2008/482373

[5] J. Obirai, N.P. Rodrigues, F. Bedioui and T. Nyokong: J. Porphyrins Phthalocyanines Vol. 7 (2003), p.508.

[6] S.C. Lee, H.O. Lintang, L. Yuliati, in preparation for submission.

[7] F. Goettmann, A. Fischer, M. Antonietti and A. Thomas: Angew. Chem. Int. Ed. Vol. 45 (2006), p.4467.

[8] K. Takanabe, K. Kamata, X. Wang, M. Antonietti, J. Kubota and K. Domen: Phys. Chem. Chem. Phys. Vol. 12 (2010), p.13020.

DOI: 10.1039/c0cp00611d

[9] M. Groenewolt and M. Antonietti: Adv. Mater. Vol. 17 (2005), p.1789.