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

Affiliation

Hasan M(1), Altaf M(2), Zafar A(2), Hassan SG(3), Ali Z(4), Mustafa G(5), Munawar T(6), Saif MS(2), Tariq T(2), Iqbal F(6), Khan MW(7), Mahmood A(8), Mahmood N(7), Shu X(9).
Author information:
(1)College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China; Department of Biochemistry & Biotechnology
(Baghdad-ul-Jadeed Campus), The Islamia University of Bahawalpur, 63100, Pakistan.
(2)Department of Biochemistry & Biotechnology
(Baghdad-ul-Jadeed Campus), The Islamia University of Bahawalpur, 63100, Pakistan.
(3)College of Information Science and Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, China.
(4)School of Chemical and Material Engineering
(SCME), National University of Sciences and Technology
(NUST), Islamabad 44000, Pakistan.
(5)Department of Plant Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan.
(6)Department of Physics, The Islamia University, Bahawalpur 63100, Pakistan.
(7)School of Electrical and Computer Engineering, RMIT University, 124 La Trobe Street, 3001 Melbourne, Victoria, Australia.
(8)School of Chemical and Biomolecular Engineering, The University of Sydney, 2006, Sydney, Australia.
(9)College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China. Electronic address: [Email]

Abstract

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.