Significantly enhanced antibacterial activity of Ag-doped TiO2 nanofibers synthesized by electrospinning

被引：22

作者：

Kudhier, M. A. ^{[1
]}

Sabry, R. S. ^{[1
]}

Al-Haidarie, Y. K. ^{[2
]}

Al-Marjani, M. F. ^{[3
]}

机构：

[1] Al Mustansiriyah Univ, Coll Educ, Dept Phys, Baghdad, Iraq

[2] Al Mustansiriyah Univ, Coll Sci, Dept Chem, Baghdad, Iraq

[3] Al Mustansiriyah Univ, Coll Sci, Dept Biol, Baghdad, Iraq

来源：

MATERIALS TECHNOLOGY | 2018年 / 33卷 / 03期

关键词：

Titanium dioxide <bold>(</bold>TiO2); PVP polymer; electrospinning; antibacterial activity; Pseudomonas aeruginosa; PHOTOCATALYTIC ACTIVITY; ANTIMICROBIAL ACTIVITY; OPTICAL-PROPERTIES; CARBON NANOTUBES; NANOPARTICLES; TITANIA; SILVER; NANOWIRES; CELLS;

D O I：

10.1080/10667857.2017.1396778

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Undoped and Ag-doped TiO2 nanofibres were synthesised through electrospinning using polyvinylpyrrolidone and Ti tetraisopropoxide as precursors. The effects of Ag doping ratio (3, 6 and 9%) were determined. X-ray diffraction measurements showed that undoped and Ag-doped TiO2 nanofibres were polycrystalline with anatase phase. The effects of Ag doing ratio were examined using atomic force microscopy, field-emission scanning electron microscopy and photoluminescence (PL) spectroscopy. The average diameter of these nanofibres increased from 72 to 95 nm with increased Ag doping ratio from undoped to 9%. PL intensity decreased with increased Ag doping ratio. The optical band gap estimated from UV-vis spectroscopy decreased by 9% from 3.45 eV for undoped nanofibre to 3.20 eV for Ag-doped TiO2 nanofibres. The percentage inhibition adhesion of Pseudomonas aeruginosa bacteria increased from 68.8% for undoped TiO2 to 90% for 9% Ag-doped TiO2 nanofibres.

引用

页码：220 / 226

页数：7