Significantly enhanced antibacterial activity of TiO2 nanofibers with hierarchical nanostructures and controlled crystallinity.

Citation data:

The Analyst, ISSN: 1364-5528, Vol: 140, Issue: 2, Page: 616-22

Publication Year:
2015
Usage 15
Abstract Views 13
Link-outs 2
Captures 22
Readers 22
Citations 16
Citation Indexes 16
Repository URL:
http://scholarworks.unist.ac.kr/handle/201301/10184
PMID:
25426595
DOI:
10.1039/c4an01682c
Author(s):
Lee, Won Seok; Park, Yang-Seok; Cho, Yoon-Kyoung
Publisher(s):
Royal Society of Chemistry (RSC); ROYAL SOC CHEMISTRY; The Royal Society of Chemistry
Tags:
Chemistry; Biochemistry, Genetics and Molecular Biology; Environmental Science; SENSITIZED SOLAR-CELLS; PHOTOCATALYTIC ACTIVITY; COMPOSITE NANOFIBERS; DOPED TIO2; ANATASE; RUTILE; PERFORMANCE; SURFACES; AG/TIO2; TITANIA
article description
Recently, there has been increased interest in electrospun-titanium dioxide nanofibers (TiO2 NFs) as antibacterial agents owing to their advantages, such as simple and cost-effective fabrication processes, and high surface areas. However, the photocatalytic effects of TiO2 NFs are relatively low because of their low-ordered crystalline structure, and the antibacterial effect is only effective under UV illumination owing to their large band-gap energy. In this paper, we have demonstrated a significantly enhanced antibacterial activity of hierarchical anatase TiO2 NFs against Staphylococcus aureus in the presence of UV light. Furthermore, the uniform deposition of a large quantity of Ag nanoparticles on the surface of the TiO2 NFs ensured a significant enhancement of the antibacterial performance, even under dark conditions. These results were obtained by exploiting the enhanced photocatalytic effect achieved through control of the crystallinity, as well as the enhanced surface area of the nanomaterials.