Structural Characterization of ZnO/AC Composite Prepared from Spent Catalyst of Vinyl Acetate Synthesis

Abstract:

ZnO/AC composite was prepared from spent catalyst of vinyl acetate synthesis by using conventional thermal treatment under CO2 atmosphere. The final composite was obtained with the operating conditions of activation temperature of 950°C, activation time of 120min and the CO2 flow rate of 600ml/min. The structure and surface properties of the ZnO/AC composite were observed and characterized by scanning electron microscope (SEM-EDX), X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR) and the UV diffuse reflectance spectra. It was found that the zinc acetate present in the spent catalyst is transformed to zinc oxide (ZnO) after thermal treatment. ZnO particles were well adhered and uniformly distributed onto the carbon surface, forming ZnO/AC composite. The thermal treatment of the spent catalyst gives rise to a material with excellent adsorptive and photocatalytic properties.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 3483-3487
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.3483
• Online since: May 2012
• Authors: Wen Wen Qu, Wen Jin, Jin Hui Peng, Shu Yang
• Keywords: Activated Carbon, Characterization, Spent Catalyst, Zno/AC Composite

References

[1] L. Dabek: J. Hazard. Mater. B, Vol. 101, (2003), p.191.

[2] C. Bao, Y. Zhao, and R. Feng: Journal of Nanjing University (Natural Sciences) in Chinese, Vol. 31, (1995), p.242.

[3] N. Sobana, M. Swaminathan: Sol. Energy Mater. Sol. C, Vol. 91, (2007), p.727.

[4] N. Sobana, M. Muruganandam M. Swaminathan: Catalysis Communications, Vol. 9, (2008), p.262.

[5] A.A. Khodja, T. Sheili, and J.F. Pihichowski: J. Photochem. Photobiol. A: Chem., Vol. 141 (2001), p.231.

[6] O. Yamamotoa, K. Nakakoshi, and T. Sasamoto: Carbon, Vol. 39, (2001), p.1643.

[7] Y. Kikuchi, Q. Qian, and M. Machida: Carbon, Vol. 44, (2006), p.195.

[8] S. Park, H.J. Park, and K. Yoo: Colloids Surf. A, Vol. 300, (2007), p.30.

[9] Ü. Özgür, Ya.I. Alivov, and C. Liu: J. Appl. Phys., Vol. 98, (2005), pp.041301-1.

[10] L.Y. Hsu, H. Teng: Fuel Proc. Tech. Vol. 64, (2000), p.155.

[11] N. Park, Y.J. Lee and J.B. Han: Colloids Surf. A, Vol. 313–314, (2008), p.66.

[12] X. Wang, P. Hu and Y. Fangli: J. Phys. Chem. C, Vol. 111, (2007), p.6706.

[13] F. Cesano, D. Scarano and S. Bertarione: J. Photochem. Photobio. A, Vol. 196, (2008), p.143.

[14] D. Kalpana, K. S. Omkumar, and S. S. Kumar: Electrochimica Acta, Vol.52, (2006), p.1309.

[15] X. Wei, H. Li and C. Yuan: Microporous and Mesoporous Materials, Vol. 118, (2009), p.307.

[16] M.A. Bezerra, R. E. Santelli, and E. P. Oliveira: Talanta, Vol.76, (2008), p.965. (xiangying)

[17] F. Gonen, and Z. Aksu: J. Hazard. Mater., Vol.154, (2008), p.731.

[18] A.A. Bahgat, E. E. Shaisha, and M. M. Saber: Physica B, Vol. 399, (2007) p.70.

[19] W. Ho, J.C. Yu, and J. Lin: Langmuir, Vol. 20 (2004), p.5865.