Synthesis of panos extract mediated ZnO nano-flowers as photocatalyst for industrial dye degradation by UV illumination

• Published in: Journal of photochemistry and photobiology. B, Biology Vol. 199; p. 111588
• Main Authors: Kaliraj, Lalitha, Ahn, Jong Chan, Rupa, Esrat Jahan, Abid, Suleman, Lu, Jing, Yang, Deok Chun
• Format: Journal Article
• Language: English
• Published: Switzerland Elsevier B.V 01.10.2019; Elsevier BV
• Subjects: Benzodiazepines - chemistry; Catalysis; Color removal; Coloring Agents - chemistry; Degradation; Dye degradation; Dyes; Eosine Yellowish-(YS) - chemistry; Flowers; Ginseng; Green Chemistry Technology - methods; Green synthesis; Illumination; Infrared spectroscopy; Kinetics; Malachite green; Methylene blue; Methylene Blue - chemistry; Nanostructures - chemistry; Panax ginseng; Panos extract; Photocatalyst; Photocatalysts; Photochemical Processes; Photoelectron spectroscopy; Photoelectrons; Plant extracts; Plant Extracts - chemistry; Rosaniline Dyes - chemistry; Spectrum analysis; Synthesis; Ultraviolet Rays; X ray photoelectron spectroscopy; X ray powder diffraction; X-ray diffraction; Zinc; Zinc oxide; Zinc Oxide - chemistry; Zinc oxides; Zinc oxide; Dye degradation; Green synthesis; Photocatalyst; Panos extract
• ISSN: 1011-1344; 1873-2682
• DOI: 10.1016/j.jphotobiol.2019.111588

Green synthesis of zinc oxide has gained extensive attention as a reliable, sustainable, and eco-friendly protocol to reduce the destructive effects associated with the traditional synthesis methods commonly utilized in laboratory and industry. Here for the first time, we have synthesized quaker ladies flower type ZnO (ZnO/QNF) from panos extract (extract from four panax plants such as Panax ginseng, Acanthopanax senticosus, Kalopanax septemlobus and Dendropanax morbifera). The synthesized ZnO materials was characterized using powder X-ray diffraction, Fourier infrared spectroscopy, X-ray photoelectron spectroscopy and Transmission electron microscope. The newly synthesized ZnO/QNF was applied for the removal of industrial dyes such as methylene blue (MB), Eosin Y (EY) and Malachite green (MG) under UV illumination. The photocatalyst degraded the 15 mg L−1 MB, EY and MG to >99% within 80, 90 and 110 min of contact time, respectively. In addition, the ZnO/QNF photocatalyst removed the low concentrated 5 mg L−1 of MB, EY, and MG within 30, 35 and 40 min of contact time, respectively. The pedal structure provided all the active sites available for the easy interaction with dye molecule under UV, and that enabled fast kinetics of dye degradation than the many other benchmark materials reported previously. The ZnO photocatalyst could be reused minimum of five cycles without any significant loss in degradation efficiency. [Display omitted] •Panos extract mediated quaker ladies type ZnO nano flower (ZnO/QNF) was synthesized.•ZnO/QNF was characterized using various analytical techniques.•ZnO/QNF was applied as photocatalyst for industrial dye degradation under UV.•ZnO/QNF was reused at least five times without much lose in degradation efficiency.