Effective processes of phenol degradation on Fe3O4-TiO2 nanostructured magnetic photocatalyst

被引：37

作者：

Lendzion-Bielun, Z. ^{[1
]}

Wojciechowska, A. ^{[1
]}

Grzechulska-Damszel, J. ^{[1
]}

Narkiewicz, U. ^{[1
]}

Sniadecki, Z. ^{[2
]}

Idzikowski, B. ^{[2
]}

机构：

[1] West Pomeranian Univ Technol Szczecin, Fac Chem Technol & Engn, Piastow Ave 42, PL-71065 Szczecin, Poland

[2] Polish Acad Sci, Inst Mol Phys, M Smoluchowskiego 17, PL-60179 Poznan, Poland

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2020年 / 136卷

关键词：

Iron oxide; Titanium dioxide; Magnetic photocatalyst; Phenol degradation; HYDROTHERMAL SYNTHESIS; TIO2; NANOCOMPOSITES; WATER; SIZE; AG; NANOPARTICLES; TEMPERATURE; DESIGN;

D O I：

10.1016/j.jpcs.2019.109178

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The photocatalytic activity of nanocrystalline titanium dioxide containing various phases (anatase, rutile) can be used for example for the splitting of water into H-2 and O-2 under ultraviolet light. In our study the suitability of magnetic Fe3O4-TiO2 nanostructures obtained by microwave-assisted solvothermal method was checked for degradation of phenol. The selected method for the synthesis of Fe3O4-TiO2 does not require the calcination process and could be effective below 170 degrees C. The average size of the crystallites of Fe3O4 was determined to be similar to 27 nm, while that of surrounding TiO2 particles equals to about 17 nm. High photoactivity in the phenol degradation process was confirmed for synthesized nanomaterials. Their activity can be controlled by the TiO2: Fe3O4 mass ratio. After 180 min of the reaction, the conversion of phenol was 100% over the commercial catalyst (P25) and 70% over the Fe3O4-TiO2(3 ml TBOT). Superparamagnetic behavior of the obtained nanostructures was evidenced with the finite size effects and superexchange interactions playing prominent role. Magnetic properties and chemical stability permitted easy separation of the obtained nanostructures from the solution after the photocatalytic degradation process and their re-use.

引用

页数：6

共 30 条

[1] Fe3O4/TiO2 core/shell nanocubes: Single-batch surfactantless synthesis, characterization and efficient catalysts for methylene blue degradation [J].