Magnetic MFe2O4-Ag2O (M = Zn, Co, & Ni) composite photocatalysts and their application for dye wastewater treatment
| Autor: | Wen Tian, Yingming Zhu, Wei Jiang, Fujin Sun, Qihui Zeng |
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| Rok vydání: | 2019 |
| Předmět: |
Inert
Materials science Process Chemistry and Technology Composite number Nanoparticle 02 engineering and technology 010501 environmental sciences 021001 nanoscience & nanotechnology 01 natural sciences Pollution chemistry.chemical_compound Chemical engineering Recovery rate chemistry Photocatalysis Chemical Engineering (miscellaneous) Ferrite (magnet) Sewage treatment 0210 nano-technology Waste Management and Disposal Silver oxide 0105 earth and related environmental sciences |
| Zdroj: | Journal of Environmental Chemical Engineering. 7:103011 |
| ISSN: | 2213-3437 |
| Popis: | Silver oxide is a high-performance visible-light-driven nanoparticle photocatalyst. However, its high cost and difficult recovery limit its wide application. Constructing a magnetic composite is a smart strategy to effectively utilize nanoparticle photocatalysts with acceptable performance maintenance. In this study, three magnetic ferrite supports, that is, CoFe2O4, ZnFe2O4, and NiFe2O4, were used as support to load Ag2O and construct Ag2O/MFe2O4 composites to lower the Ag consumption and intensify the recovery rate. The photoactivity, stability, and magnetic recovery of the three composite magnetic photocatalysts were evaluated by using four typical organics. The results of the batch experiment confirm that Ag2O/MFe2O4 (60%) possesses a good photoactivity and stability. However, Ag2O/ZnFe2O4 exhibits a better photoactivity and higher magnetic recovery based on cycling during the semi-continuous process. The ferrites are inert for photocatalysis process without significant effect on Ag2O photocatalytic performance, but increase the surface area and improve the recovery rate as magnetic composite carriers. |
| Databáze: | OpenAIRE |
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