Rhodamine B Removal of TiO<sub>2</sub>@SiO<sub>2</sub> Core-Shell Nanocomposites Coated to Buildings
Surface application of photocatalyst in cement-based materials could endow it with photocatalytic properties, however, the weak adhesion between photocatalyst coatings and the substrates may result in poor durability in outdoor environments. In this study, TiO<sub>2</sub>@SiO<sub>2...
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MDPI AG
2020-01-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/10/2/80 |
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| author | Dan Wang Zhi Geng Pengkun Hou Ping Yang Xin Cheng Shifeng Huang |
| author_facet | Dan Wang Zhi Geng Pengkun Hou Ping Yang Xin Cheng Shifeng Huang |
| author_sort | Dan Wang |
| collection | DOAJ |
| description | Surface application of photocatalyst in cement-based materials could endow it with photocatalytic properties, however, the weak adhesion between photocatalyst coatings and the substrates may result in poor durability in outdoor environments. In this study, TiO<sub>2</sub>@SiO<sub>2</sub> core-shell nanocomposites with different coating thicknesses were synthesized by varying the experiment parameters. The results indicate that SiO<sub>2</sub> coatings accelerated the rhodamine B removal to a certain extent, owing to its high surface area; however, more SiO<sub>2</sub> coatings decreased its photocatalytic efficiencies. The cement matrix treated with TiO<sub>2</sub>@SiO<sub>2</sub> core-shell nanocomposites showed good photocatalytic efficiency and durability after harsh weathering processing. A reaction mechanism was revealed by the reaction of TiO<sub>2</sub>@SiO<sub>2</sub> nanocomposites with Ca(OH)<sub>2</sub>. |
| first_indexed | 2024-04-14T02:23:04Z |
| format | Article |
| id | doaj.art-68ccd8c46e374a8aafac576d69975cb2 |
| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-04-14T02:23:04Z |
| publishDate | 2020-01-01 |
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| spelling | doaj.art-68ccd8c46e374a8aafac576d69975cb22022-12-22T02:17:57ZengMDPI AGCrystals2073-43522020-01-011028010.3390/cryst10020080cryst10020080Rhodamine B Removal of TiO<sub>2</sub>@SiO<sub>2</sub> Core-Shell Nanocomposites Coated to BuildingsDan Wang0Zhi Geng1Pengkun Hou2Ping Yang3Xin Cheng4Shifeng Huang5Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, Shandong, ChinaShandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, Shandong, ChinaShandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, Shandong, ChinaCollege of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong, ChinaShandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, Shandong, ChinaShandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, Shandong, ChinaSurface application of photocatalyst in cement-based materials could endow it with photocatalytic properties, however, the weak adhesion between photocatalyst coatings and the substrates may result in poor durability in outdoor environments. In this study, TiO<sub>2</sub>@SiO<sub>2</sub> core-shell nanocomposites with different coating thicknesses were synthesized by varying the experiment parameters. The results indicate that SiO<sub>2</sub> coatings accelerated the rhodamine B removal to a certain extent, owing to its high surface area; however, more SiO<sub>2</sub> coatings decreased its photocatalytic efficiencies. The cement matrix treated with TiO<sub>2</sub>@SiO<sub>2</sub> core-shell nanocomposites showed good photocatalytic efficiency and durability after harsh weathering processing. A reaction mechanism was revealed by the reaction of TiO<sub>2</sub>@SiO<sub>2</sub> nanocomposites with Ca(OH)<sub>2</sub>.https://www.mdpi.com/2073-4352/10/2/80photocatalysiscore-shell structuretio<sub>2</sub>/sio<sub>2</sub> composite nanoparticlescement-based materials |
| spellingShingle | Dan Wang Zhi Geng Pengkun Hou Ping Yang Xin Cheng Shifeng Huang Rhodamine B Removal of TiO<sub>2</sub>@SiO<sub>2</sub> Core-Shell Nanocomposites Coated to Buildings Crystals photocatalysis core-shell structure tio<sub>2</sub>/sio<sub>2</sub> composite nanoparticles cement-based materials |
| title | Rhodamine B Removal of TiO<sub>2</sub>@SiO<sub>2</sub> Core-Shell Nanocomposites Coated to Buildings |
| title_full | Rhodamine B Removal of TiO<sub>2</sub>@SiO<sub>2</sub> Core-Shell Nanocomposites Coated to Buildings |
| title_fullStr | Rhodamine B Removal of TiO<sub>2</sub>@SiO<sub>2</sub> Core-Shell Nanocomposites Coated to Buildings |
| title_full_unstemmed | Rhodamine B Removal of TiO<sub>2</sub>@SiO<sub>2</sub> Core-Shell Nanocomposites Coated to Buildings |
| title_short | Rhodamine B Removal of TiO<sub>2</sub>@SiO<sub>2</sub> Core-Shell Nanocomposites Coated to Buildings |
| title_sort | rhodamine b removal of tio sub 2 sub sio sub 2 sub core shell nanocomposites coated to buildings |
| topic | photocatalysis core-shell structure tio<sub>2</sub>/sio<sub>2</sub> composite nanoparticles cement-based materials |
| url | https://www.mdpi.com/2073-4352/10/2/80 |
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