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2D/2D/0D TiO2/C3N4/Ti3C2 MXene composite S-scheme photocatalyst with enhanced CO2 reduction activity
Open accessAbstract
Abstract Herein, two-dimensional (2D) TiO2 mesoporous nanosheets with three to four C3N4 layers grown in situ are employed to design a core–shell 2D/2D van der Waals heterojunction (TiO2/C3N4). Edge-terminated zero-dimensional (0D) Ti3C2 MXene quantum dots (TCQD) are subsequently integrated in the C3N4 surface via electrostatic interactions. The constructed 2D/2D/0D TiO2/C3N4/Ti3C2 composite heterojunction photocatalyst exhibits enhanced CO2 reduction activity compared to TiO2, C3N4, TiO2/C3N4, C3N4/Ti3C2 for CO and CH4 production. A step-scheme (S-scheme) charge transfer mechanism operates for the prepared samples during CO2 reduction, as authenticated by in situ X-ray photoelectron spectroscopy and electron paramagnetic resonance analysis. This study provides a paradigm of a rational structural design for regulating the number and type of heterointerfaces and further insights into the mechanism of multijunction photocatalysts.
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Roles of Cocatalysts in Photocatalysis and Photoelectrocatalysis
Yang, J., Wang, D., Han, H., & Li, C. (2013) · Accounts of Chemical Research · doi:10.1021/ar300227e · Cited by 2,848
Cited by
Tang, R., Gong, D., Deng, Y., Xiong, S., Zheng, J., Li, L., Zhou, Z., Su, L., & Zhao, J. (2022) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2021.126944 · Cited by 280
Gao, K., Hou, L.-A., An, X., Huang, D., & Yang, Y. (2023) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2022.122150 · Cited by 270
Metadata
- Authors
- He, F., Zhu, B., Cheng, B., Yu, J., Ho, W., & Macyk, W.
- Venue
- Applied Catalysis B: Environmental
- Publisher
- Elsevier BV
- Published
- 2020-09
- Volume
- 272
- Pages
- 119006
- ISSN
- 0926-3373 (ISSN-L)
- OpenAlex
- W3017221539
- Cited by
- 922
- References
- 1
- FWCI
- 28.38
- Type
- journal article
- Language
- en
- Open access
- green
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- He, F., Zhu, B., Cheng, B., Yu, J., Ho, W., & Macyk, W. (2020). 2D/2D/0D TiO2/C3N4/Ti3C2 MXene composite S-scheme photocatalyst with enhanced CO2 reduction activity. Applied Catalysis B: Environmental. https://doi.org/10.1016/j.apcatb.2020.119006
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