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One‐Step Fabrication and High Photocatalytic Activity of Porous TiO2 Hollow Aggregates by Using a Low‐Temperature Hydrothermal Method Without Templates
Abstract
Porous TiO 2 hollow aggregates have been synthesized on a large scale by means of a simple hydrothermal method without using any templates. The as‐prepared products were characterized by means of field emission scanning electron microscopy, XRD, TEM, nitrogen adsorption, UV/Vis diffuse reflectance spectroscopy, and FTIR spectroscopy. The photocatalytic activity of the aggregates was demonstrated through the photocatalytic degradation of Rhodamine B. Structural characterization indicates that the porous TiO 2 aggregates are 500–800 nm in diameter and display mesoporous structure. The average pore sizes and BET surface areas of the aggregates are 12 nm and 168 m 2 g−1, respectively. Optical adsorption investigations show that the aggregates possess an optical band‐gap energy of 3.36 eV. The as‐prepared products were substantially more effective photocatalysts than the commercially available photocatalyst P25. The dye degradation rate of the porous TiO 2 hollow aggregates is more than twice that of P25. The high photoactivities of the aggregates can be attributed to the combined effects of several factors, namely, large surface areas, the existence of mesopores, and the high band‐gap energy. In addition, the as‐prepared products can be easily recycled.
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Cites
Photocatalysis on TiO2 Surfaces: Principles, Mechanisms, and Selected Results
Linsebigler, A. L., Lu, G., & Yates, J. T. (1995) · Chemical Reviews · doi:10.1021/cr00035a013 · Cited by 11,575
Cited by
Nanoparticulate Functional Materials
Goesmann, H., & Feldmann, C. (2010) · Angewandte Chemie International Edition · doi:10.1002/anie.200903053 · Cited by 733
Liu, Y., Zhang, Q., Xu, M., Yuan, H., Chen, Y., Zhang, J., Luo, K., Zhang, J., & You, B. (2019) · Applied Surface Science · doi:10.1016/j.apsusc.2019.01.137 · Cited by 382
Shang, M., Wang, W., Zhang, L., Sun, S., Wang, L., & Zhou, L. (2009) · The Journal of Physical Chemistry C · doi:10.1021/jp9045808 · Cited by 278
Pettibone, J. M., Cwiertny, D. M., Scherer, M., & Grassian, V. H. (2008) · Langmuir · doi:10.1021/la7039916 · Cited by 256
Lee, S. C., Jeong, Y., Kim, Y. J., Kim, H., Lee, H. U., Lee, Y.-C., Lee, S. M., Kim, H. J., An, H.-R., Ha, M. G., et al. (2018) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2018.04.048 · Cited by 40
Metadata
- Authors
- Liu, Z., Sun, D. D., Guo, P., & Leckie, J. O.
- Venue
- Chemistry – A European Journal
- Publisher
- Wiley
- Published
- 2007-01-30
- Volume
- 13
- Issue
- 6
- Pages
- 1851-1855
- ISSN
- 0947-6539 (ISSN-L)
- 1521-3765
- OpenAlex
- W2072812184
- Cited by
- 216
- References
- 1
- FWCI
- 8.95
- Type
- journal article
- Language
- en
- Open access
- closed
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- Liu, Z., Sun, D. D., Guo, P., & Leckie, J. O. (2007). One‐Step Fabrication and High Photocatalytic Activity of Porous TiO2 Hollow Aggregates by Using a Low‐Temperature Hydrothermal Method Without Templates. Chemistry – A European Journal. https://doi.org/10.1002/chem.200601092
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