Journal Article

Halloysite Nanotubes Supported Ag and ZnO Nanoparticles with Synergistically Enhanced Antibacterial Activity

Yang, Qian, Shu, Zhan, Zhang, Yi, Yang, Huaming

2017

Overview

Novel antimicrobial nanocomposite incorporating halloysite nanotubes (HNTs) and silver (Ag) into zinc oxide (ZnO) nanoparticles is prepared by integrating HNTs and decorating Ag nanoparticles. ZnO nanoparticles (ZnO NPs) and Ag nanoparticles (Ag NPs) with a size of about 100 and 8 nm, respectively, are dispersively anchored onto HNTs. The synergistic effects of ZnO NPs, Ag NPs, and HNTs led to the superior antibacterial activity of the Ag-ZnO/HNTs antibacterial nanocomposites. HNTs facilitated the dispersion and stability of ZnO NPs and brought them in close contact with bacteria, while Ag NPs could promote the separation of photogenerated electron-hole pairs and enhanced the antibacterial activity of ZnO NPs. The close contact with cell membrane enabled the nanoparticles to produce the increased concentration of reactive oxygen species and the metal ions to permeate into the cytoplasm, thus induced quick death of bacteria, indicating that Ag-ZnO/HNTs antibacterial nanocomposite is a promising candidate in the antibacterial fields.

• Publisher: Springer US,Springer Nature B.V,SpringerOpen
• Subject: Ag nanoparticles / Antibacterial activity / Antiinfectives and antibacterials / Bacteria / Cell membranes / Chemistry and Materials Science / Cytoplasm / Halloysite nanotubes / Holes (electron deficiencies) / Materials Science / Metal concentrations / Metal ions / Molecular Medicine / Nano Express / Nanochemistry / Nanocomposites / Nanoparticles / Nanoscale Science and Technology / Nanotechnology / Nanotechnology and Microengineering / Nanotubes / Reactive oxygen species / Silver / Synergistic effect / Zinc oxide / Zinc oxides / ZnO nanoparticles