Aerobic Oil-Phase Cyclic Magnetic Adsorption to Synthesize 1D Fe2O3@TiO2 Nanotube Composites for Enhanced Visible-Light Photocatalytic Degradation
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials and Reagents
2.2. Synthesis of TiO2 Nanotubes
2.3. Synthesis of Fe3O4@oleic Acid
2.4. Synthesis of 1D Fe2O3@TiO2 Nanotube Composites
2.5. Photocatalytic Experiments
2.6. Characterizations
3. Results and Discussion
3.1. Structural and Elemental Characterizations
3.2. Photo-Chemical and Bandgap Characterizations
3.3. Magnetic Characterizations
3.4. Photocatalytic Activity
3.5. Intermediate Products and Degradation Pathway of RhB
3.6. Recyclable Performance
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Sample | Ti 2p/% | O 1s/% | Fe 2p/% |
---|---|---|---|
0.5FeTi | 32.97 | 66.57 | 0.47 |
1FeTi | 30.90 | 67.02 | 2.09 |
2FeTi | 29.04 | 66.94 | 4.02 |
Sample | SBET/(m2·g−1) | Adsorption Branch | Desorption Branch | ||
---|---|---|---|---|---|
Pore Size/nm | Pore Volume/cm3·g−1 | Pore Size/nm | Pore Volume/cm3·g−1 | ||
0.5FeTi | 28.46 | 24.77 | 0.195 | 22.72 | 0.186 |
1FeTi | 29.36 | 23.31 | 0.160 | 12.23 | 0.148 |
2FeTi | 28.29 | 24.42 | 0.192 | 9.76 | 0.174 |
Fe2O3 | 10.96 | 13.77 | 0.079 | 11.99 | 0.069 |
Sample | 0.5FeTi | 1FeTi | 2FeTi | Fe2O3 |
---|---|---|---|---|
Degradation Efficiency (%) | 72.11 | 84.96 | 86.53 | 43.55 |
k/h−1 | 0.2010 | 0.2663 | 0.2875 | 0.0890 |
R2 | 0.9985 | 0.9987 | 0.9936 | 0.9972 |
Materials | Light Source | Time (h) | Photodegradation Amount (%) | Ref. |
---|---|---|---|---|
α-Fe2O3 | Visible light | 3 | 38% MB | [43] |
Fe2O3/SnO2 | UV light | 4 | 70% MB | [44] |
α-Fe2O3/γ-Fe2O3 | Visible light | 12 | 90% RhB | [45] |
γ-Fe2O3@TiO2 | UV light | 5 | ~18% 4-chlophenol | [46] |
Fe2O3@WO3 | Polychromatic light | 3 | 18% RhB | [47] |
Fe2O3 | Visible light | 6 | ~70% RhB | [48] |
2FeTi | Visible light | 6 | 86.53% RhB | This work |
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Tao, Q.; Huang, X.; Bi, J.; Wei, R.; Xie, C.; Zhou, Y.; Yu, L.; Hao, H.; Wang, J. Aerobic Oil-Phase Cyclic Magnetic Adsorption to Synthesize 1D Fe2O3@TiO2 Nanotube Composites for Enhanced Visible-Light Photocatalytic Degradation. Nanomaterials 2020, 10, 1345. https://doi.org/10.3390/nano10071345
Tao Q, Huang X, Bi J, Wei R, Xie C, Zhou Y, Yu L, Hao H, Wang J. Aerobic Oil-Phase Cyclic Magnetic Adsorption to Synthesize 1D Fe2O3@TiO2 Nanotube Composites for Enhanced Visible-Light Photocatalytic Degradation. Nanomaterials. 2020; 10(7):1345. https://doi.org/10.3390/nano10071345
Chicago/Turabian StyleTao, Qingqing, Xin Huang, Jingtao Bi, Rongli Wei, Chuang Xie, Yongzhu Zhou, Lu Yu, Hongxun Hao, and Jingkang Wang. 2020. "Aerobic Oil-Phase Cyclic Magnetic Adsorption to Synthesize 1D Fe2O3@TiO2 Nanotube Composites for Enhanced Visible-Light Photocatalytic Degradation" Nanomaterials 10, no. 7: 1345. https://doi.org/10.3390/nano10071345