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Luminescent Layered Hybrid Ag-Ru/LDH as Photocatalytic Antibacterial Agent

Abstract

Ruthenium complex and silver nanoparticles doped layered double hydroxides (Ag-Ru/LDH) nanomaterials were successfully fabricated by a self-assembly method, with ruthenium complex as a photodynamic sensitizer doped in the interlayer of the LDH matrix and Ag nanoparticle as a co-antibacterial agent modified on the surface of LDH. The obtained Ag-Ru/LDH hybrid showed highly efficient fluorescent property and adsorbility. Besides the antibacterial activity of AgNPs and ruthenium, the hybrid showed better synergistic inhibiting effect to the growth of drug-resistant E. coli and S. aureus under illumination. Fluorescent enhancement and strong bacterial inhibiting effect were achieved due to the novel structure and SPR energy transfer. Further, the bacterial surface adsorption of hybrid and the bacterial morphology changes were observed. Moreover, the degradation of 1,4-β-D-glucoside bonds of cell wall by excited Ru complex was attested. The mechanistic studies provide insight into better understanding of the antibacterial activity of nanomaterials. Overall, these results indicate that the prepared nanomaterials may have potential applications as an antibacterial agent.

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Publication details

The article was received on 14 Mar 2017, accepted on 05 Jun 2017 and first published on 05 Jun 2017


Article type: Paper
DOI: 10.1039/C7NJ00853H
Citation: New J. Chem., 2017, Accepted Manuscript
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    Luminescent Layered Hybrid Ag-Ru/LDH as Photocatalytic Antibacterial Agent

    F. Xiao, X. Liu, Y. Xiao, F. Chen and Y. Wu, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ00853H

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