The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
Graphene-wrapped hierarchical TiO2 nanoflower composites with enhanced photocatalytic performance
Abstract
Graphene-wrapped titanium dioxide nanoflower composites (G–TiO2) consisting of nanosheets and nanoparticles were synthesized using a two-step solvo/hydrothermal process. Materials were characterized using SEM, TEM, high-resolution TEM (HRTEM), XRD, Raman spectroscopy, and FTIR. Further analysis was performed using Branauer–Emmett–Teller (BET) specific surface area analysis, electrochemical impedance spectroscopy (EIS), UV-Vis spectroscopy, and diffuse reflectance UV-Vis spectroscopy. Photocatalytic activity was determined by the photo-degradation of methylene blue under UV irradiation. Results show that the TiO2 nanoflower exhibits a higher photocatalytic activity than commercial P25 by a factor of 1.49. This is attributed to the highly crystalline, hierarchical nature of the nanoflower structure, which provides improved charge transport and a reduced recombination rate of photo-generated electron–hole pairs. After wrapping with graphene, the G–TiO2 composite can further improve the photocatalytic performance by providing a planar conjugated surface for dye adsorption, by further reducing recombination through accepting electrons from TiO2, and by causing a red shift in light absorption. The highest photocatalytic performance was found using a graphene loading of 5 wt%, which outperforms commercial P25 by a factor of 3.4.
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Cites
Graphene-based semiconductor photocatalysts
Xiang, Q., Yu, J., & Jaroniec, M. (2012) · Chem. Soc. Rev. · doi:10.1039/c1cs15172j · Cited by 2,730
Liu, J., Bai, H., Wang, Y., Liu, Z., Zhang, X., & Sun, D. D. (2010) · Advanced Functional Materials · doi:10.1002/adfm.201001391 · Cited by 776
Xue, G., Liu, H., Chen, Q., Hills, C., Tyrer, M., & Innocent, F. (2011) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2010.11.063 · Cited by 215
Cited by
Ong, W., Tan, L., Chai, S., Yong, S., & Mohamed, A. R. (2014) · ChemSusChem · doi:10.1002/cssc.201300924 · Cited by 339
Flexible TiO2/cellulose acetate hybrid film as a recyclable photocatalyst
Jin, X., Xu, J., Wang, X., Xie, Z., Liu, Z., Liang, B., Chen, D., & Shen, G. (2014) · RSC Advances · doi:10.1039/c3ra47710j · Cited by 61
Metadata
- Authors
- Lui, G., Liao, J.-Y., Duan, A., Zhang, Z., Fowler, M., & Yu, A.
- Venue
- Journal of Materials Chemistry A
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2013
- Volume
- 1
- Issue
- 39
- Pages
- 12255
- ISSN
- 2050-7488 (ISSN-L)
- 2050-7496
- OpenAlex
- W2000532381
- Cited by
- 239
- References
- 3
- FWCI
- 9.74
- Type
- journal article
- Language
- en
- Open access
- closed
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- Lui, G., Liao, J.-Y., Duan, A., Zhang, Z., Fowler, M., & Yu, A. (2013). Graphene-wrapped hierarchical TiO2 nanoflower composites with enhanced photocatalytic performance. Journal of Materials Chemistry A. https://doi.org/10.1039/c3ta12329d
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