Synthesis, characterization and photocatalytic efficiency of Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO core/shell/shell nanostructures
In this research, three magnetically separable photocatalysts, Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO, with core/shell/shell structures were successfully prepared. In the first step, soft magnetic and hard magnetic Fe3O4 and SrFe12O19 powders were synthesized using carbon reduction...
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| Format: | Article |
| Language: | English |
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University of Novi Sad
2022-09-01
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| Series: | Processing and Application of Ceramics |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1820-6131/2022/1820-61312203291B.pdf |
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| author | Bavarsiha Fatemeh Dadashian Saeideh Montazeri-Pour Mehdi Ghasemy-Piranloo Fardin Rajabi Masoud |
| author_facet | Bavarsiha Fatemeh Dadashian Saeideh Montazeri-Pour Mehdi Ghasemy-Piranloo Fardin Rajabi Masoud |
| author_sort | Bavarsiha Fatemeh |
| collection | DOAJ |
| description | In this research, three magnetically separable photocatalysts, Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO, with core/shell/shell structures were successfully prepared. In the first step, soft magnetic and hard magnetic Fe3O4 and SrFe12O19 powders were synthesized using carbon reduction and co-precipitation routes, respectively. In the second step, silica coating was performed by controlling the hydrolysis and con- densation of tetraethyl orthosilicate (TEOS) precursor on the magnetic cores. In the third step, a layer of TiO2 or ZnO photocatalytic shells was made on the as-prepared composites using titanium n-butoxide (TNBT) or zinc nitrate hexahydrate, respectively. The formation of the core/shell/shell structures was confirmed by FESEM and TEM analyses. The saturation magnetizations of the Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO photocatalytic materials were 41.5, 33 and 49 emu/g, respectively. Photocatalytic activity was evaluated by degradation percentages of methylene blue (MB) under UV illumination, which were 88%, 83% and 62%, for the Fe3O4/SiO2/TiO2, SrFe12O19//TiO2 and Fe3O4/SiO2/ZnO composites, respectively. The first-, and second-order reaction kinetics were used to find out the suitable MB removal kinetics. |
| first_indexed | 2024-04-11T19:45:55Z |
| format | Article |
| id | doaj.art-4a876d0936414c44844edf32aa3a9e45 |
| institution | Directory Open Access Journal |
| issn | 1820-6131 2406-1034 |
| language | English |
| last_indexed | 2024-04-11T19:45:55Z |
| publishDate | 2022-09-01 |
| publisher | University of Novi Sad |
| record_format | Article |
| series | Processing and Application of Ceramics |
| spelling | doaj.art-4a876d0936414c44844edf32aa3a9e452022-12-22T04:06:28ZengUniversity of Novi SadProcessing and Application of Ceramics1820-61312406-10342022-09-0116329130110.2298/PAC2203291BSynthesis, characterization and photocatalytic efficiency of Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO core/shell/shell nanostructuresBavarsiha Fatemeh0Dadashian Saeideh1Montazeri-Pour Mehdi2Ghasemy-Piranloo Fardin3Rajabi Masoud4Biosphere Technology Company, Environmental Laboratory, Abhar, Iran + Department of Materials Science and Engineering, Faculty of Technology and Engineering, Imam Khomeini International University (IKIU), Qazvin, IranBiosphere Technology Company, Environmental Laboratory, Abhar, IranDepartment of Chemical and Materials Engineering, Buein Zahra Technical University, Buein Zahra, Qazvin, IranBiosphere Technology Company, Environmental Laboratory, Abhar, IranDepartment of Materials Science and Engineering, Faculty of Technology and Engineering, Imam Khomeini International University (IKIU), Qazvin, IranIn this research, three magnetically separable photocatalysts, Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO, with core/shell/shell structures were successfully prepared. In the first step, soft magnetic and hard magnetic Fe3O4 and SrFe12O19 powders were synthesized using carbon reduction and co-precipitation routes, respectively. In the second step, silica coating was performed by controlling the hydrolysis and con- densation of tetraethyl orthosilicate (TEOS) precursor on the magnetic cores. In the third step, a layer of TiO2 or ZnO photocatalytic shells was made on the as-prepared composites using titanium n-butoxide (TNBT) or zinc nitrate hexahydrate, respectively. The formation of the core/shell/shell structures was confirmed by FESEM and TEM analyses. The saturation magnetizations of the Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO photocatalytic materials were 41.5, 33 and 49 emu/g, respectively. Photocatalytic activity was evaluated by degradation percentages of methylene blue (MB) under UV illumination, which were 88%, 83% and 62%, for the Fe3O4/SiO2/TiO2, SrFe12O19//TiO2 and Fe3O4/SiO2/ZnO composites, respectively. The first-, and second-order reaction kinetics were used to find out the suitable MB removal kinetics.http://www.doiserbia.nb.rs/img/doi/1820-6131/2022/1820-61312203291B.pdfcore/shell/shell nanostructureshard and soft magnetic compositesphotocatalytic efficiency |
| spellingShingle | Bavarsiha Fatemeh Dadashian Saeideh Montazeri-Pour Mehdi Ghasemy-Piranloo Fardin Rajabi Masoud Synthesis, characterization and photocatalytic efficiency of Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO core/shell/shell nanostructures Processing and Application of Ceramics core/shell/shell nanostructures hard and soft magnetic composites photocatalytic efficiency |
| title | Synthesis, characterization and photocatalytic efficiency of Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO core/shell/shell nanostructures |
| title_full | Synthesis, characterization and photocatalytic efficiency of Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO core/shell/shell nanostructures |
| title_fullStr | Synthesis, characterization and photocatalytic efficiency of Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO core/shell/shell nanostructures |
| title_full_unstemmed | Synthesis, characterization and photocatalytic efficiency of Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO core/shell/shell nanostructures |
| title_short | Synthesis, characterization and photocatalytic efficiency of Fe3O4/SiO2/TiO2, SrFe12O19/SiO2/TiO2 and Fe3O4/SiO2/ZnO core/shell/shell nanostructures |
| title_sort | synthesis characterization and photocatalytic efficiency of fe3o4 sio2 tio2 srfe12o19 sio2 tio2 and fe3o4 sio2 zno core shell shell nanostructures |
| topic | core/shell/shell nanostructures hard and soft magnetic composites photocatalytic efficiency |
| url | http://www.doiserbia.nb.rs/img/doi/1820-6131/2022/1820-61312203291B.pdf |
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