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Issue 2, 2021
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Preparation of graphene oxide (GO)/lanthanum coordination polymers for enhancement of bactericidal activity

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Abstract

In this study, graphene oxide/lanthanum coordination polymer (GLCP) nanocomposites are prepared and their bactericidal activities against seven typical Pathogenic bacteria are evaluated. The GLCPs are fabricated through the electrostatic self-assembly of La ions on negatively charged graphene oxide (GO), followed by the stabilization of π–π stacking to ensure the formation of lanthanum coordination polymers on the GO surface. The morphologies and structures of the synthesized GLCPs are characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet-visible (UV-vis) spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA). Moreover, the bactericidal effects of the well-coordinated GLCPs are investigated using the zone of inhibition and flat colony counting methods, as well as by determining the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). The five GLCPs synthesized in this study exhibit broad-spectrum antibacterial activities against seven typical Pathogenic bacteria. We believe that our study could serve as a starting point to prepare bactericidal materials for further applications.

Graphical abstract: Preparation of graphene oxide (GO)/lanthanum coordination polymers for enhancement of bactericidal activity

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Supplementary files

Article information


Submitted
21 Sep 2020
Accepted
18 Nov 2020
First published
23 Nov 2020

J. Mater. Chem. B, 2021,9, 366-372
Article type
Paper

Preparation of graphene oxide (GO)/lanthanum coordination polymers for enhancement of bactericidal activity

J. Wang, Z. Shan, X. Tan, X. Li, Z. Jiang and J. Qin, J. Mater. Chem. B, 2021, 9, 366
DOI: 10.1039/D0TB02266G

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