Synthesis and properties of photocatalytic active composite materials based on TiO2 and modified by Ag and SiO2

16th International Conference of Students and Young Scientists "Prospects of Fundamental Sciences Development"

自然科学（总论）

Buzaev, A.A.^1 ; Rogacheva, A.O.^1 ; Khalipova, O.S.^1 ; Brichkov, A.S.^1 ; Kozik, V.V.^1

Faculty of Chemistry, National Research Tomsk State University, 36 Lenin Street, Tomsk

634050, Russia^1

关键词: Dye photodegradation;    Fiberglass materials;    Model reactions;    N2 adsorption;    Photo-catalytic;    Textural characteristic;    Urban environments;    UV irradiation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/597/1/012014/pdf
DOI  :  10.1088/1757-899X/597/1/012014

学科分类：自然科学（综合）

来源: IOP

【 摘 要 】

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 TiO2 films. In this work, we obtained composite materials based on TiO2 and modified by Ag and SiO2 on the surface of the fiberglass material (Ag/SiO2/TiO2/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 N2 adsorption-desorption isoterms. Surface area and average pore size of this sample is 8.2 m2/g and 11.4 nm respectively. Prepared composite Ag(0.5%)/SiO2(3%)/TiO2/FGM material revealed photocatalytic activity in model reaction of methyl orange azo dye photodegradation under UV-irradiation.