Open AccessMussel‐inspired green synthesis of Ag‐coated polydopamine microspheres for selective antibacterial performance
Author(s) -
Guo Aiying,
Mu Qianzhu,
Cai Aijun,
Wang Xiuping
Publication year - 2019
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2018.5357
Subject(s) - transmission electron microscopy , scanning electron microscope , antibacterial activity , x ray photoelectron spectroscopy , nuclear chemistry , materials science , microsphere , silver nanoparticle , nanotechnology , reducing agent , antimicrobial , morphology (biology) , chemical engineering , nanoparticle , chemistry , bacteria , composite material , organic chemistry , biology , engineering , genetics
Inspired by mussels, the antimicrobial Ag‐coated polydopamine microspheres (Ag‐coated PDA MSs) composites are synthesised through one‐pot method. Ag nanoparticles (NPs) are easily generated using PDA MSs as green reducing agents, and are well‐dispersed on the surface of PDA MSs at the same time. The morphology and structure of the Ag‐coated PDA MSs are characterised by X‐ray diffraction, X‐ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy. The Ag‐coated PDA MSs exhibit selective antibacterial activity towards S. aureus . Due to the elevated intracellular reactive oxygen species level, the majority of S. aureus cells are killed, however, the growth of E. coli is not affected evidently in the same condition.