Biogenic Silver Nanoparticles/Mg-Al Layered Double Hydroxides with Peroxidase-like Activity for Mercury Detection and Antibacterial Activity

Over the past decade, the attention of researchers has been drawn to materials with enzyme-like properties to substitute natural enzymes. The ability of nanomaterials to mimic enzymes makes them excellent enzyme mimics; nevertheless, there is a wide berth for improving their activity and providing a...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2023-07, Vol.28 (15), p.5754
Main Authors: Chamanmalik, Masira I, Antony, Arnet Maria, Yelamaggad, C V, Patil, Shivaputra A, Patil, Siddappa A
Format: Article
Language:English
Subjects:
antibacterial activity
Antibacterial agents
Antibiotics
Biocompatibility
Enzymes
Escherichia coli
Heavy metals
Hg2+ detection
Hydroxides
Mg-Al layered double hydroxides
Nanoparticles
Peroxidase
peroxidase-like activity
Phytochemicals
silver nanoparticles
Spectrum analysis
Tectona grandis
Toxicity
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Summary:Over the past decade, the attention of researchers has been drawn to materials with enzyme-like properties to substitute natural enzymes. The ability of nanomaterials to mimic enzymes makes them excellent enzyme mimics; nevertheless, there is a wide berth for improving their activity and providing a platform to heighten their potential. Herein, we report a green and facile route for leaves extract-assisted synthesis of silver nanoparticles (Ag NPs) decorated on Mg-Al layered double hydroxides (Mg-Al-OH@TGLE-AgNPs) as a nanocatalyst. The Mg-Al-OH@TGLE-AgNPs nanocatalyst was well characterized, and the average crystallite size of the Ag NPs was found to be 7.92 nm. The peroxidase-like activity in the oxidation of -phenylenediamine in the presence of H O was found to be an intrinsic property of the Mg-Al-OH@TGLE-AgNPs nanocatalyst. In addition, the use of the Mg-Al-OH@TGLE-AgNPs nanocatalyst was extended towards the quantification of Hg ions which showed a wide linearity in the concentration range of 80-400 μM with a limit of detection of 0.2 nM. Additionally, the synergistic medicinal property of Ag NPs and the phytochemicals present in the leaves extract demonstrated notable antibacterial activity for the Mg-Al-OH@TGLE-AgNPs nanocatalyst against Gram-negative and Gram-positive .
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules28155754