Open AccessAntibacterial and photocatalytic activity of anatase phase Ag‐doped TiO 2 nanoparticles
Author(s) -
Madadi Mahsa,
Ghorbanpour Mohammad,
Feizi Atabak
Publication year - 2018
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.2018.5057
Subject(s) - photocatalysis , anatase , materials science , nanoparticle , doping , titanium dioxide , scanning electron microscope , visible spectrum , nuclear chemistry , chemical engineering , nanotechnology , chemistry , catalysis , metallurgy , organic chemistry , composite material , optoelectronics , engineering
A simple and new solid‐state molten‐salt method to synthesise silver (Ag)‐doped titanium dioxide (TiO 2 ) nanoparticles for solar light‐induced photocatalytic applications is examined. Ag‐doped TiO 2 nanoparticles with varied Ag content ranging from 3 to 10% were synthesised by a single‐step molten‐salt synthesis method. The effect of Ag content on the antibacterial and photocatalytic activity of nanoparticles was tested. The prepared nanoparticles were studied by scanning electron microscopy (SEM), energy‐dispersive X‐ray (EDX) spectrometry, ultraviolet–visible (UV–vis) diffusive reflectance spectrometer (UV–vis DRS) and powder X‐ray diffraction. The SEM image of nanoparticles clearly showed the presence of agglomerated spherical particles. The EDX analysis of the particles confirmed successful doping of particles in the presence of the Ag in the particles. The doping of Ag in TiO 2 produced TiO 2 pure anatase phase. According to UV–vis DRS results, increasing Ag‐doped content in the Ag‐doped TiO 2 resulted in a higher visible absorption capability of the materials. Ag doping also improved the antibacterial and photocatalytic activity of TiO 2 nanoparticles. The maximum photocatalytic activity under light irradiation was observed for 5% Ag‐doped TiO 2 .