Aerobic Oil-Phase Cyclic Magnetic Adsorption to Synthesize 1D Fe<sub>2</sub>O<sub>3</sub>@TiO<sub>2</sub> Nanotube Composites for Enhanced Visible-Light Photocatalytic Degradation
In this work, Fe<sub>2</sub>O<sub>3</sub>@TiO<sub>2</sub> nanostructures with staggered band alignment were newly designed by an aerobic oil-phase cyclic magnetic adsorption method. XRD and TEM analyses were performed to verify the uniform deposition of Fe<sub&...
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MDPI AG
2020-07-01
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| Online Access: | https://www.mdpi.com/2079-4991/10/7/1345 |
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| author | Qingqing Tao Xin Huang Jingtao Bi Rongli Wei Chuang Xie Yongzhu Zhou Lu Yu Hongxun Hao Jingkang Wang |
| author_facet | Qingqing Tao Xin Huang Jingtao Bi Rongli Wei Chuang Xie Yongzhu Zhou Lu Yu Hongxun Hao Jingkang Wang |
| author_sort | Qingqing Tao |
| collection | DOAJ |
| description | In this work, Fe<sub>2</sub>O<sub>3</sub>@TiO<sub>2</sub> nanostructures with staggered band alignment were newly designed by an aerobic oil-phase cyclic magnetic adsorption method. XRD and TEM analyses were performed to verify the uniform deposition of Fe<sub>2</sub>O<sub>3</sub> nanoparticles on the nanotube inner walls of TiO<sub>2</sub>. The steady-state degradation experiments exhibited that 1FeTi possessed the most superior performance, which might be ascribable to the satisfying dark adsorption capacity, efficient photocatalytic activity, ease of magnetic separation, and economic efficiency. These results indicated that the deposition of Fe<sub>2</sub>O<sub>3</sub> into TiO<sub>2</sub> nanotubes significantly enhanced the activity of Fe<sub>2</sub>O<sub>3</sub>, which was mainly ascribed to the Fe<sub>2</sub>O<sub>3</sub>-induced formation of staggered iron oxides@TiO<sub>2</sub> band alignment and thus efficient separation of h<sup>+</sup> and e<sup>−</sup>. Furthermore, the PL intensity and lifetime of the decay curve were considered as key criterions for the activity’s evaluation. Finally, the leaching tests and regeneration experiments were also performed, which illustrated the inhibited photodissolution compared with TiO<sub>2</sub>/Fe<sub>3</sub>O<sub>4</sub> and stable cycling ability, enabling 1FeTi to be a promising magnetic material for photocatalytic water remediation. |
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| spelling | doaj.art-7350c3078fef44b1b8d16c7bb4ef4a052023-11-20T06:21:54ZengMDPI AGNanomaterials2079-49912020-07-01107134510.3390/nano10071345Aerobic Oil-Phase Cyclic Magnetic Adsorption to Synthesize 1D Fe<sub>2</sub>O<sub>3</sub>@TiO<sub>2</sub> Nanotube Composites for Enhanced Visible-Light Photocatalytic DegradationQingqing Tao0Xin Huang1Jingtao Bi2Rongli Wei3Chuang Xie4Yongzhu Zhou5Lu Yu6Hongxun Hao7Jingkang Wang8National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, ChinaNational Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, ChinaNational Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, ChinaNational Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, ChinaNational Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, ChinaDepartment of Chemistry, School of Science, Tianjin Chengjian University, Tianjin 300384, ChinaDepartment of Chemistry, School of Science, Tianjin Chengjian University, Tianjin 300384, ChinaNational Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, ChinaNational Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, ChinaIn this work, Fe<sub>2</sub>O<sub>3</sub>@TiO<sub>2</sub> nanostructures with staggered band alignment were newly designed by an aerobic oil-phase cyclic magnetic adsorption method. XRD and TEM analyses were performed to verify the uniform deposition of Fe<sub>2</sub>O<sub>3</sub> nanoparticles on the nanotube inner walls of TiO<sub>2</sub>. The steady-state degradation experiments exhibited that 1FeTi possessed the most superior performance, which might be ascribable to the satisfying dark adsorption capacity, efficient photocatalytic activity, ease of magnetic separation, and economic efficiency. These results indicated that the deposition of Fe<sub>2</sub>O<sub>3</sub> into TiO<sub>2</sub> nanotubes significantly enhanced the activity of Fe<sub>2</sub>O<sub>3</sub>, which was mainly ascribed to the Fe<sub>2</sub>O<sub>3</sub>-induced formation of staggered iron oxides@TiO<sub>2</sub> band alignment and thus efficient separation of h<sup>+</sup> and e<sup>−</sup>. Furthermore, the PL intensity and lifetime of the decay curve were considered as key criterions for the activity’s evaluation. Finally, the leaching tests and regeneration experiments were also performed, which illustrated the inhibited photodissolution compared with TiO<sub>2</sub>/Fe<sub>3</sub>O<sub>4</sub> and stable cycling ability, enabling 1FeTi to be a promising magnetic material for photocatalytic water remediation.https://www.mdpi.com/2079-4991/10/7/13451D nanostructuresTiO<sub>2</sub> nanotubesiron oxidesvisible-light photocatalysis |
| spellingShingle | Qingqing Tao Xin Huang Jingtao Bi Rongli Wei Chuang Xie Yongzhu Zhou Lu Yu Hongxun Hao Jingkang Wang Aerobic Oil-Phase Cyclic Magnetic Adsorption to Synthesize 1D Fe<sub>2</sub>O<sub>3</sub>@TiO<sub>2</sub> Nanotube Composites for Enhanced Visible-Light Photocatalytic Degradation Nanomaterials 1D nanostructures TiO<sub>2</sub> nanotubes iron oxides visible-light photocatalysis |
| title | Aerobic Oil-Phase Cyclic Magnetic Adsorption to Synthesize 1D Fe<sub>2</sub>O<sub>3</sub>@TiO<sub>2</sub> Nanotube Composites for Enhanced Visible-Light Photocatalytic Degradation |
| title_full | Aerobic Oil-Phase Cyclic Magnetic Adsorption to Synthesize 1D Fe<sub>2</sub>O<sub>3</sub>@TiO<sub>2</sub> Nanotube Composites for Enhanced Visible-Light Photocatalytic Degradation |
| title_fullStr | Aerobic Oil-Phase Cyclic Magnetic Adsorption to Synthesize 1D Fe<sub>2</sub>O<sub>3</sub>@TiO<sub>2</sub> Nanotube Composites for Enhanced Visible-Light Photocatalytic Degradation |
| title_full_unstemmed | Aerobic Oil-Phase Cyclic Magnetic Adsorption to Synthesize 1D Fe<sub>2</sub>O<sub>3</sub>@TiO<sub>2</sub> Nanotube Composites for Enhanced Visible-Light Photocatalytic Degradation |
| title_short | Aerobic Oil-Phase Cyclic Magnetic Adsorption to Synthesize 1D Fe<sub>2</sub>O<sub>3</sub>@TiO<sub>2</sub> Nanotube Composites for Enhanced Visible-Light Photocatalytic Degradation |
| title_sort | aerobic oil phase cyclic magnetic adsorption to synthesize 1d fe sub 2 sub o sub 3 sub tio sub 2 sub nanotube composites for enhanced visible light photocatalytic degradation |
| topic | 1D nanostructures TiO<sub>2</sub> nanotubes iron oxides visible-light photocatalysis |
| url | https://www.mdpi.com/2079-4991/10/7/1345 |
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