Bioinspired synthesis of zinc oxide nano-flowers: A surface enhanced antibacterial and harvesting efficiency

Mater Sci Eng C Mater Biol Appl. 2021 Feb:119:111280. doi: 10.1016/j.msec.2020.111280. Epub 2020 Jul 23.


Despite of broad range application, the cost effective, highly stable and reproduceable synthesis of ZnO is needed, especially which can make it biosafe as well. Here, a unique bioinspired synthesis of ZnO nanoflowers (NFs) has been introduced using Withania coagulans extract as reducing agent. Different molar concentrations were assessed to counter the effect of structural, morphological, antibacterial activity and high efficiency of algae harvesting. The UV-spectroscopy authenticates the synthesis of ZnO NFs having Wurtzite hexagonal structure with the size in the range of 360-550 nm. While surface analysis revealed the presence of stabilizing agent like phenolic, amine, etc. on surface of ZnO NFs. These perineum ZnO NFs exhibited a stronger antibacterial with Gram-positive bacteria Staphylococcus aureus as compare to Gram-negative bacteria Pseudomonas aeruginosa and greater harvesting efficiency up to 94% on the account of greater surface area and unique surface chemistry, thus leading a new horizon of more efficient and effective applications for ethanol production.

Keywords: Antibacterial activity; Green synthesis; Harvesting efficiency; Nanoflowers; Zinc oxide.

MeSH terms

  • Anti-Bacterial Agents / pharmacology
  • Microbial Sensitivity Tests
  • Pseudomonas aeruginosa
  • Staphylococcus aureus
  • Zinc Oxide* / pharmacology


  • Anti-Bacterial Agents
  • Zinc Oxide