Open AccessSynthesis and properties of photocatalytic active composite materials based on TiO2 and modified by Ag and SiO2
Author(s) -
A. A. Buzaev,
A. O. Rogacheva,
О. С. Халипова,
Anton S. Brichkov,
В. В. Козик
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/597/1/012014
Subject(s) - photocatalysis , photodegradation , materials science , methyl orange , scanning electron microscope , composite number , adsorption , chemical engineering , sol gel , desorption , composite material , nuclear chemistry , nanotechnology , catalysis , chemistry , organic chemistry , engineering
Nowadays air and water pollutions are becoming a serious problem for urban environment. One of the efficient methods of purifying water and air is photocatalysis on TiO 2 films. In this work, we obtained composite materials based on TiO 2 and modified by Ag and SiO 2 on the surface of the fiberglass material (Ag/SiO 2 /TiO 2 /FGM) by a sol-gel method. Complex studies were carried out to identify the phase compositions, morphology and textural characteristics of obtained samples by X-ray diffractometey, scanning electron microscopy, micro-X-ray spectral analyses and analysis of N 2 adsorption-desorption isoterms. Surface area and average pore size of this sample is 8.2 m 2 /g and 11.4 nm respectively. Prepared composite Ag(0.5%)/SiO 2 (3%)/TiO 2 /FGM material revealed photocatalytic activity in model reaction of methyl orange azo dye photodegradation under UV-irradiation.