Gold Nanoparticles Bioproduced in Cyanobacteria in the Initial Phase Opened an Avenue for the Discovery of Corresponding Cerium Nanoparticles
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Published:2024-02-04
Issue:2
Volume:12
Page:330
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ISSN:2076-2607
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Container-title:Microorganisms
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language:en
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Short-container-title:Microorganisms
Author:
Fritz Melanie1, Chen Xiaochen2ORCID, Yang Guifang2, Lv Yuancai2ORCID, Liu Minghua2ORCID, Wehner Stefan1ORCID, Fischer Christian B.13ORCID
Affiliation:
1. Department of Physics, University of Koblenz, 56070 Koblenz, Germany 2. Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environment & Resources, Fuzhou University, Fuzhou 350116, China 3. Materials Science, Energy and Nano-Engineering Department, Mohammed VI Polytechnic University, Ben Guerir 43150, Morocco
Abstract
The production of isolated metallic nanoparticles with multifunctionalized properties, such as size and shape, is crucial for biomedical, photocatalytic, and energy storage or remediation applications. This study investigates the initial particle formations of gold nanoparticles (AuNPs) bioproduced in the cyanobacteria Anabaena sp. using high-resolution transmission electron microscopy images for digital image analysis. The developed method enabled the discovery of cerium nanoparticles (CeNPs), which were biosynthesized in the cyanobacteria Calothrix desertica. The particle size distributions for AuNPs and CeNPs were analyzed. After 10 h, the average equivalent circular diameter for AuNPs was 4.8 nm, while for CeNPs, it was approximately 5.2 nm after 25 h. The initial shape of AuNPs was sub-round to round, while the shape of CeNPs was more roundish due to their amorphous structure and formation restricted to heterocysts. The local PSDs indicate that the maturation of AuNPs begins in the middle of vegetative cells and near the cell membrane, compared to the other regions of the cell.
Funder
CSC-DAAD program for the Project-Related Personal Exchange Deutsche Akademische Austauschdienst e. V. Open Access Fund of the University of Koblenz
Subject
Virology,Microbiology (medical),Microbiology
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