Open AccessConstructing supported Ag antibacterial nano-agent with high activity and stability for broad-spectrum antibiosis
Author(s) -
Hai-Bin Xue,
Xuewei Gao,
Xiangnan Feng,
Song He,
Fengyuan Zhao,
Guiju Zhang,
Xinrui Wang,
Xiaobo Luo,
Shanyue Guan
Publication year - 2021
Publication title -
materials research express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 35
ISSN - 2053-1591
DOI - 10.1088/2053-1591/ac0d70
Subject(s) - antibacterial activity , x ray photoelectron spectroscopy , nanomaterials , materials science , high resolution transmission electron microscopy , nanoparticle , chemical engineering , nanotechnology , layered double hydroxides , nuclear chemistry , chemistry , transmission electron microscopy , bacteria , hydroxide , genetics , biology , engineering
The developing a green and facile synthetic approach of Ag-based antibacterial nanomaterials with controlled composition, size, and shape, to acquire high antibacterial activity and long-term durability, is of vital importance and remains a challenging goal. Herein, a novel LDHs-supported Ag antibacterial nanomaterial (Ag/CoAl-LDHs) are fabricated via an in situ deposition of the Ag nanoparticles onto the CoAl-LDHs surface. X-ray diffraction pattern (XRD) and High-resolution TEM (HRTEM) measurements confirm that the uniform Ag nanoparticles (the average particle size of 16.5 nm) are highly dispersed and firmly anchored onto CoAl-LDHs surface. As revealed by x-ray photoelectron spectroscopy (XPS), the CoAl-LDHs nanoplates play the roles of both a support and a reductant without any external, and there was a redox reaction between Co 2+ in LDHs layers and Ag + in AgNO 3 solution, giving rise to in situ loading of Ag nanoparticles onto LDHs. Moreover, antibacterial experiments verify that Ag/CoAl-LDHs not only have efficient antibacterial activity against both Escherichia coli and Staphylococcus aureus , but also exhibit very stable antibacterial properties for both bacteria. Therefore, this research demonstrates a successful paradigm for the rational design and preparation of new antibacterial nanomaterials with high antibacterial activity and long-term durability.