Parameters of Siliciferous Substrate of Photocatalytic Composition Material as a Factor of Its Efficiency

Y Ogurtsova,M Labuzova,E Gubareva,V Strokova

doi:10.1007/978-3-030-22974-0_91

Y Ogurtsova, M Labuzova + Show 2 more

Open Access

https://doi.org/10.1007/978-3-030-22974-0_91

Copy DOI

Publication Date: Jan 1, 2019
Citations: 1	License type: CC BY 4.0

Affiliation: Belgorod State Technological University

Abstract

The article presents the results of the determination pf the properties of the photocatalytic composite material (PCM) of the “TiO2 – SiO2” system synthesized by the sol-gel method. The characteristics of siliciferous raw material - diatomite and silica clay, as substrates in the composition of PCM - mineral composition, microstructural features, composition and concentration of active centers on its surface are determined. The dependences of the elemental composition of the surface, the features of the microstructure and photocatalytic activity of PCM on the properties of siliciferous raw material are found. The research shows that the use of diatomite makes it possible to obtain PCM with better characteristics, which is caused by a higher content of the amorphous phase, a more developed and chemically active surface of the particles.

Highlights

The production of photocatalytic composite materials (PCM) of the “TiO2 – SiO2” system is aimed at increasing the efficiency of photocatalytic decomposition of pollutants (Arai et al 2006; Guo et al 2016).The peculiarities of physical and chemical interaction of siliciferous and titanium-containing components in the synthesis and use of PCM directly affect its photocatalytic activity
Diatomite is a sedimentary biogenic rock consisting of microscopic siliciferous shells of algae with a valve size of 5–200 mcm
Silica clay is of sedimentary biogenic and chemogenic origin, composed mainly of opal-cristobalite silica particles with a size of less than 5 mcm

Summary

Introduction

The production of photocatalytic composite materials (PCM) of the “TiO2 – SiO2” system is aimed at increasing the efficiency of photocatalytic decomposition of pollutants (Arai et al 2006; Guo et al 2016).The peculiarities of physical and chemical interaction of siliciferous and titanium-containing components in the synthesis and use of PCM directly affect its photocatalytic activity.

Methods

Results

Conclusion