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2D/2D/2D heterojunction of Ti3C2 MXene/MoS2 nanosheets/TiO2 nanosheets with exposed (001) facets toward enhanced photocatalytic hydrogen production activity
Abstract
Abstract Exposing the highly active facets and hybridizing the photocatalyst with appropriate cocatalysts with right placement have been regarded as a powerful approach to high performance photocatalysts. Herein, TiO2 nanosheets (NSs) are in situ grown on highly conductive Ti3C2 MXene and then MoS2 NSs are deposited on the (101) facets of TiO2 NSs with mainly exposed high-active (001) facets through a two-step hydrothermal method. And a unique 2D-2D-2D structure of Ti3C2@TiO2@MoS2 composite is achieved. With an optimized MoS2 loading amounts (15 wt%), the Ti3C2@TiO2@MoS2 composite shows a remarkable enhancement in the photocatalytic H2 evolution reaction compared with Ti3C2@TiO2 composite and TiO2 NS. It also shows good stability under the reaction condition. This arises from: (i) the in situ growth of TiO2 NSs construct strong interfacial contact with excellent electronic conductivity of Ti3C2, which facilitates the separation of carriers; (ii) the coexposed (101) and (001) facets can form a surface heterojunction within single TiO2 NS, which is beneficial for the transfer and separation of charge carriers; and (iii) the MoS2 NSs are deposited on the electrons-rich (101) facets of TiO2 NSs, which not only effectively reduces the charge carriers recombination rate by capturing photoelectrons, but also makes TiO2 NSs expose more highly active (001) facets to afford high-efficiency photogeneration of electron-hole pairs.
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Sing, K. S. W. (1985) · Pure and Applied Chemistry · doi:10.1351/pac198557040603 · Cited by 24,485
Zhou, W., Yin, Z., Du, Y., Huang, X., Zeng, Z., Fan, Z., Liu, H., Wang, J., & Zhang, H. (2013) · Small · doi:10.1002/smll.201201161 · Cited by 1,258
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Cited by
A Review on MXene Synthesis, Stability, and Photocatalytic Applications
Murali, G., Reddy Modigunta, J. K., Park, Y. H., Lee, J.-H., Rawal, J., Lee, S.-Y., In, I., & Park, S.-J. (2022) · ACS Nano · doi:10.1021/acsnano.2c04750 · Cited by 668
Recent Advances in Oxidation Stable Chemistry of 2D MXenes
Cao, F., Zhang, Y., Wang, H., Khan, K., Tareen, A. K., Qian, W., Zhang, H., & Ågren, H. (2022) · Advanced Materials · doi:10.1002/adma.202107554 · Cited by 648
Ti3C2 2D MXene: Recent Progress and Perspectives in Photocatalysis
Tang, R., Xiong, S., Gong, D., Deng, Y., Wang, Y., Su, L., Ding, C., Yang, L., & Liao, C. (2020) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.0c12905 · Cited by 259
Li, H., Yu, J., Gong, Y., Lin, N., Yang, Q., Zhang, X., & Wang, Y. (2023) · Separation and Purification Technology · doi:10.1016/j.seppur.2022.122716 · Cited by 155
Metadata
- Authors
- Li, Y., Yin, Z., Ji, G., Liang, Z., Xue, Y., Guo, Y., Tian, J., Wang, X., & Cui, H.
- Venue
- Applied Catalysis B: Environmental
- Publisher
- Elsevier BV
- Published
- 2019-06
- Volume
- 246
- Pages
- 12-20
- ISSN
- 0926-3373 (ISSN-L)
- OpenAlex
- W2909111847
- Cited by
- 496
- References
- 2
- FWCI
- 15.31
- Type
- journal article
- Language
- en
- Open access
- closed
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- The paper
- Li, Y., Yin, Z., Ji, G., Liang, Z., Xue, Y., Guo, Y., Tian, J., Wang, X., & Cui, H. (2019). 2D/2D/2D heterojunction of Ti3C2 MXene/MoS2 nanosheets/TiO2 nanosheets with exposed (001) facets toward enhanced photocatalytic hydrogen production activity. Applied Catalysis B: Environmental. https://doi.org/10.1016/j.apcatb.2019.01.051
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