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Effect on the Photocatalytic Activity of TiO₂NTs Under Visible Light of Synergistic Effect of Ti $^{3 +}$ and S

Liyun Xiang

School of Materials Science and Engineering, Tianjin Chengjian University, 300384, Tianjin, P. R. China

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Jing Ya

http://orcid.org/0000-0002-7953-697X

School of Materials Science and Engineering, Tianjin Chengjian University, 300384, Tianjin, P. R. China

E-mail Address: yajing_tj@126.com

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Lixia Li

School of Materials Science and Engineering, Tianjin Chengjian University, 300384, Tianjin, P. R. China

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, and

Zhifeng Liu

School of Materials Science and Engineering, Tianjin Chengjian University, 300384, Tianjin, P. R. China

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https://doi.org/10.1142/S1793292018300013Cited by:2 (Source: Crossref)

Abstract

TiO₂ nanotube arrays (TiO₂NTs) were prepared by anodic oxidation, then soaked in thiourea solution, and finally transformed into modified anatase TiO₂ structure by heat treatment. Through the test results of SEM, TEM, XRD, XPS, UV-vis diffuse reflectance spectroscopy, photo-current and so on, finding that S replaces Ti $^{4 +}$ in the form of S $^{6 +}$ , and part of the Ti $^{4 +}$ is reduced to Ti $^{3 +}$ . Ladder type energy band structure, producing by the appearance of S $^{6 +}$ and Ti $^{3 +}$ , makes the electron–hole more easily and increases the carrier transfer speed to a certain degree. The photo-current size has increased from 1.07mA/cm² to 2.13mA/cm². By simulating decolorization test of sample to methylthionine chloride under visible light, the degradation rate of the modified sample to methylene blue increases from 32% to 63%, and increased by 1.97 times.

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References

1. P. Yang, C. Lu, N. Pinghua and Y. Koudu, Mater. Lett. 57, 794 (2002). Web of Science, Google Scholar
2. A. M. Ruppert and T. Paryjczak, Appl. Catal. A 320, 80 (2007). Web of Science, Google Scholar
3. K. M. Parida and B. Naik, J. Colloid Interface Sci. 333, 269 (2009). Web of Science, Google Scholar
4. S. Pany, K. M. Parida and B. Naik, RSC Adv. 3, 4976 (2013). Web of Science, Google Scholar
5. R. Asahi et al., Science 293, 269 (2001). Web of Science, Google Scholar
6. S. Sato, Chem. Phys. Lett. 123, 126 (1986). Web of Science, Google Scholar
7. D. Gong et al., J. Mater. Res. 16, 3331 (2001). Web of Science, Google Scholar
8. T. Umebayashi et al., Chem. Lett. 32, 330 (2003). Web of Science, Google Scholar
9. J. C. Yu et al., Environ. Sci. Technol. 39, 1175 (2005). Web of Science, Google Scholar
10. S. A. Bakar and C. Ribeiro, J. Mol. Catal. A Chem. 412, 78 (2016). Google Scholar
11. T. Ohno, T. Mitsui and M. Matsumura, Chem. Lett. 32, 364 (2003). Web of Science, Google Scholar
12. T. Ohno et al., Appl. Catal. A 265, 115 (2004). Web of Science, Google Scholar
13. Z. Wang et al., J. Am. Chem. Soc. 137, 9146 (2015). Web of Science, Google Scholar
14. L. Li, Y. Jing, F. Hu, Z. Liu and E. Lei, J. Energy Chem. 25, 740 (2016). Web of Science, Google Scholar
15. L. Szatmáry et al., Catal. Today 161, 23 (2011). Web of Science, Google Scholar
16. H. Cui, W. Zhao, C. Yang, H. Yin, T. Lin, Y. Shan, Y. Xie, H. Gu, F. Huang and J. Black, Mater. Chem. A 2, 8612 (2014). Web of Science, Google Scholar
17. Z. Wang, C. Yang, T. Lin, H. Yin, P. Chen, D. Wan, F. Xu, F. Huang, J. Lin, X. Xie and M. Jiang, Adv. Funct. Mater. 23, 5444 (2013). Web of Science, Google Scholar
18. J. Cai, Z. A. Huang, K. Lv, J. Sun and K. Deng, RSC Adv. 4, 19588 (2014). Web of Science, Google Scholar
19. W. Fang, Y. Zhou, C. Dong, M. Xing and J. Zhang, Catal. Today 266, 188 (2016). Web of Science, Google Scholar
20. S. K. Samantaray and K. M. Parida, J. Mater. Sci. 38, 1835 (2003). Web of Science, Google Scholar
21. C. Han et al., Appl. Catal. B Environ. 107, 77 (2011). Web of Science, Google Scholar
22. P. Periyat et al., J. Phys. Chem. C 113, 3246 (2009). Web of Science, Google Scholar
23. B. Naik, K. M. Parida and C. S. Gopinath, J. Phys. Chem. C 114, 19473 (2014). Web of Science, Google Scholar