Mukwevho, NFosso-Kankeu, EWaanders, FKumar, NeerajRay, Suprakas SMbianda, XY2019-11-252019-11-252019-01Mukwevho, N. et al. 2019. Photocatalytic activity of Gd2O2CO3·ZnO·CuO nanocomposite used for the degradation of phenanthrene. SN Applied Sciences, vol. 1: 10. https://doi.org/10.1007/s42452-018-0012-02523-39632523-3971https://link.springer.com/article/10.1007/s42452-018-0012-0https://doi.org/10.1007/s42452-018-0012-0https://rdcu.be/bXzvUhttp://hdl.handle.net/10204/11224Copyright: Springer 2018. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website: https://doi.org/10.1007/s42452-018-0012-0 . A free fulltext non-print version of the article can be viewed at https://rdcu.be/bXzvUMultimetal oxides nanocomposite photocatalysts based on Gd2O2CO3·ZnO·CuO were prepared by a co-precipitation method and carefully characterized using a range of analytical techniques. More specifically, analysis by X-ray diffraction and electron microscopies confirmed the identity and quality of the as-synthesized powders. The photocatalytic degradation activities of these nanocomposites towards phenanthrene were then investigated by measuring the effects of catalyst dosage, irradiation time, and oxidant addition. In addition, the pseudo first-order kinetic model was used to determine the rate constant of the degradation reaction. Optimum dosages of 0.6, 0.6, and 0.4 gL-1 were recorded when using CuO, Cu–CuO/ZnO, and Gd2O2CO3·ZnO·CuO, respectively. In addition, the Gd2O2CO3·ZnO·CuO composite exhibited a higher removal efficiency than both Cu–CuO/ZnO and the pure CuO nanoparticles. Furthermore, the addition of oxidants influenced the removal of phenanthrene from solution. Finally, the photocatalytic degradation data followed pseudo first-order kinetics as defined by the Langmuir–Hinshelwood model, which allowed prediction of the faster degradation rate by the Gd2O2CO3·ZnO·CuO nanocomposite. The newly synthesized nanocomposite could therefore be considered for the removal of phenanthrene and related polycyclic aromatic hydrocarbons from contaminated water.enKinetic modelMetal oxideNanocompositePhotocatalytic degradationPolycyclic aromaticArticleMukwevho, N., Fosso-Kankeu, E., Waanders, F., Kumar, N., Ray, S. S., & Mbianda, X. (2019). Photocatalytic activity of Gd2O2CO3·ZnO·CuO nanocomposite used for the degradation of phenanthrene. http://hdl.handle.net/10204/11224Mukwevho, N, E Fosso-Kankeu, F Waanders, Neeraj Kumar, Suprakas S Ray, and XY Mbianda "Photocatalytic activity of Gd2O2CO3·ZnO·CuO nanocomposite used for the degradation of phenanthrene." (2019) http://hdl.handle.net/10204/11224Mukwevho N, Fosso-Kankeu E, Waanders F, Kumar N, Ray SS, Mbianda X. Photocatalytic activity of Gd2O2CO3·ZnO·CuO nanocomposite used for the degradation of phenanthrene. 2019; http://hdl.handle.net/10204/11224.TY - Article AU - Mukwevho, N AU - Fosso-Kankeu, E AU - Waanders, F AU - Kumar, Neeraj AU - Ray, Suprakas S AU - Mbianda, XY AB - Multimetal oxides nanocomposite photocatalysts based on Gd2O2CO3·ZnO·CuO were prepared by a co-precipitation method and carefully characterized using a range of analytical techniques. More specifically, analysis by X-ray diffraction and electron microscopies confirmed the identity and quality of the as-synthesized powders. The photocatalytic degradation activities of these nanocomposites towards phenanthrene were then investigated by measuring the effects of catalyst dosage, irradiation time, and oxidant addition. In addition, the pseudo first-order kinetic model was used to determine the rate constant of the degradation reaction. Optimum dosages of 0.6, 0.6, and 0.4 gL-1 were recorded when using CuO, Cu–CuO/ZnO, and Gd2O2CO3·ZnO·CuO, respectively. In addition, the Gd2O2CO3·ZnO·CuO composite exhibited a higher removal efficiency than both Cu–CuO/ZnO and the pure CuO nanoparticles. Furthermore, the addition of oxidants influenced the removal of phenanthrene from solution. Finally, the photocatalytic degradation data followed pseudo first-order kinetics as defined by the Langmuir–Hinshelwood model, which allowed prediction of the faster degradation rate by the Gd2O2CO3·ZnO·CuO nanocomposite. The newly synthesized nanocomposite could therefore be considered for the removal of phenanthrene and related polycyclic aromatic hydrocarbons from contaminated water. DA - 2019-01 DB - ResearchSpace DP - CSIR KW - Kinetic model KW - Metal oxide KW - Nanocomposite KW - Photocatalytic degradation KW - Polycyclic aromatic LK - https://researchspace.csir.co.za PY - 2019 SM - 2523-3963 SM - 2523-3971 T1 - Photocatalytic activity of Gd2O2CO3·ZnO·CuO nanocomposite used for the degradation of phenanthrene TI - Photocatalytic activity of Gd2O2CO3·ZnO·CuO nanocomposite used for the degradation of phenanthrene UR - http://hdl.handle.net/10204/11224 ER -