Open AccessPhotocatalytic activity of Cu doped TiO 2 nanoparticles and comparison of two main doping procedures
Author(s) -
Behnajady Mohammad A.,
Taba Hatam,
Modirshahla Nasser,
Shokri Mohammad
Publication year - 2013
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.2013.0166
Subject(s) - photocatalysis , anatase , doping , photodegradation , rutile , materials science , nanoparticle , hydrolysis , titanium dioxide , nuclear chemistry , inorganic chemistry , scanning electron microscope , chemical engineering , nanotechnology , catalysis , chemistry , organic chemistry , optoelectronics , metallurgy , composite material , engineering
In this reported work, TiO 2 nanoparticles containing anatase‐rutile and pure rutile phases were prepared by sol–gel and hydrolysis in acidic solution methods, respectively. Two general procedures, doping during synthesis (DDS) via a hydrolysis method and doping on the provided TiO 2 nanoparticles (DOP) that is performed by the impregnation method have been studied by doping copper to these nanoparticles. The photocatalytic activity was evaluated by photodegradation of C.I. Acid Red 27 as a model contaminant. The prepared samples were characterised by X‐ray diffraction, atomic absorption flame emission spectroscopy and scanning electron microscopy. It is found that the photosensitised degradation activity can be enhanced by doping an appropriate amount of Cu. Photocatalytic activity results indicated that samples that have been doped by the DDS procedure show higher photocatalytic efficiency than samples doped by the DOP procedure.