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Impregnation of ZnO onto activated carbon under hydrothermal conditions and its photocatalytic properties

Journal of Materials Science volume 41, pages 1355–1362 (2006)Cite this article

Abstract

Zinc oxide photocatalyst was impregnated onto the activated carbon under mild hydrothermal conditions (T=150°C, P = 20–30 bars) to form a ZnO:AC composite material. The ZnO:AC composite was characterized using powder X-ray diffraction (XRD), Fourier infrared spectroscopy (FTIR), BET surface area measurements and scanning electron microscopy (SEM). As-prepared ZnO:AC composite exhibited higher photocatalytic activity when compared to the commercial ZnO and untreated activated carbon; this was testified by the degradation of acid violet dye using ZnO:AC and commercial ZnO. The effect of various parameters such as initial dye concentration, catalyst loading, pH of the medium, source and intensity of illumination on the photocatalytic degradation of acid violet using ZnO:AC were investigated. Real time textile effluents have also been considered for the degradation using ZnO:AC composites. The reduction in the chemical oxygen demand (COD) values of the treated effluents revealed a complete destruction of the organic molecules along with the color removal.

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Authors and Affiliations

  1. Department of Geology, University of Mysore, Manasagangotri, Mysore, 570 006, India

    K. Byrappa, A. K. Subramani, M. H. Sunitha & B. Basavalingu

  2. Department of Chemistry, University of Mysore, Manasagangotri, Mysore, 570 006, India

    S. Ananda & K. M. Lokanatha Rai

  3. Department of Materials Science and Technology, Tokyo University of Science, 2641, Yamazaki, Noda, 278-8510, Chiba, Japan

    K. Soga

Authors
  1. K. Byrappa
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  2. A. K. Subramani
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  3. S. Ananda
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  4. K. M. Lokanatha Rai
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  5. M. H. Sunitha
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  6. B. Basavalingu
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  7. K. Soga
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Correspondence to K. Byrappa.

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Byrappa, K., Subramani, A.K., Ananda, S. et al. Impregnation of ZnO onto activated carbon under hydrothermal conditions and its photocatalytic properties. J Mater Sci 41, 1355–1362 (2006). https://doi.org/10.1007/s10853-006-7341-x

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  • DOI: https://doi.org/10.1007/s10853-006-7341-x

Keywords

  • Activate Carbon
  • Chemical Oxygen Demand
  • Photocatalytic Activity
  • Photocatalytic Degradation
  • Zinc Oxide