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Copper oxide-carbon nanotube (CuO/CNT) nanocomposite: Synthesis and photocatalytic dye degradation from colored textile wastewater

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Abstract

In this paper, CuO/CNT nanocomposite was synthesized and its photocatalytic dye degradation ability for colored textile wastewater was studied. The characteristics of the nanocomposite were investigated by XRD, SEM and FTIR. The photodegradation of Direct Red 31 (DR31) and Reactive Red 120 (RR120) by CuO/CNT in presence of H2O2 was investigated. Photocatalytic dye degradation was determined by UV-vis spectrophotometer. Effects of catalyst dosage, initial dye concentration and salt on photodegradation performance were studied. The photocatalytic dye degradation ability of pure CuO and CuO/CNT nanocomposite is 78 % and 89 % for DR31 and 70 % and 87 % for RR120, respectively. The results showed that CNT increased the photocatalytic activity of CuO. The presence of salt decreases dye degradation efficiency. The dye degradation kinetics by nanocomposite followed first-order kinetic model. The reaction rate at 0.005 g catalyst was 0.0137 and 0.0105 min-1 for DR31 and RR120, respectively. It was found that the CuO/CNT nanocomposite as a photocatalyst could be used to degrade dyes from colored wastewater.

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Authors and Affiliations

  1. Department of Environmental Research, Institute for Color Science and Technology, Tehran, 1668814811, Iran

    Niyaz Mohammad Mahmoodi

  2. Department of Chemical & Petroleum Engineering, Sharif University of Technology, Tehran, 11365-11155, Iran

    Pardis Rezaei, Cyrus Ghotbei & Mohammad Kazemeini

Authors
  1. Niyaz Mohammad Mahmoodi
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  2. Pardis Rezaei
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  3. Cyrus Ghotbei
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  4. Mohammad Kazemeini
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Correspondence to Niyaz Mohammad Mahmoodi.

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Mahmoodi, N.M., Rezaei, P., Ghotbei, C. et al. Copper oxide-carbon nanotube (CuO/CNT) nanocomposite: Synthesis and photocatalytic dye degradation from colored textile wastewater. Fibers Polym 17, 1842–1848 (2016). https://doi.org/10.1007/s12221-016-6645-y

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  • DOI: https://doi.org/10.1007/s12221-016-6645-y

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