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JING Hua, JI Lili, ZHOU Yarui, GUO Jian, SUN Jiaxin, LU Shiyao. Green Synthesized ZnO Nanoparticles from Spartina alterniflora and their Photocatalytic and Antibacterial Properties[J]. Journal of South China Normal University (Natural Science Edition), 2022, 54(2): 24-29. DOI: 10.6054/j.jscnun.2022022
Citation: JING Hua, JI Lili, ZHOU Yarui, GUO Jian, SUN Jiaxin, LU Shiyao. Green Synthesized ZnO Nanoparticles from Spartina alterniflora and their Photocatalytic and Antibacterial Properties[J]. Journal of South China Normal University (Natural Science Edition), 2022, 54(2): 24-29. DOI: 10.6054/j.jscnun.2022022

Green Synthesized ZnO Nanoparticles from Spartina alterniflora and their Photocatalytic and Antibacterial Properties

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  • Received Date: August 08, 2021
  • Available Online: May 11, 2022
  • The sol-gel method was used to green synthesize ZnO nanoparticles (Nano-ZnO) with Spartina alterniflora(SAF) leaf extract, and the surface morphology, active groups, crystal structure and light absorption characteristics were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), and the photocatalytic degradation activity of Nano-ZnO on Malachite green (MG) and the antibacterial properties of Staphylococcus aureus were analyzed. The results show that the green synthesis of Nano-ZnO with SAF extract has abundant oxygen-containing active groups, smaller particle size and good dispersibility. The calculated band gap energy of Nano-ZnO is 3.09 eV, which indicates that its efficiency of light absorption and utilization has been improved. The degradation efficiency of Nano-ZnO on malachite green reaches 98.2% in visible light, h+ and ·O2- are the main active species that play a role in the photocatalytic degradation process. The antibacterial rate of Nano-ZnO against Staphylococcus aureus is twice that of ZnO. This study provides a new way for the high-value utilization of SAF and a new method for the preparation of nano-metal oxides.
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