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Electrical promotion of spatially photoinduced charge separation via interfacial-built-in quasi-alloying effect in hierarchical Zn2In2S5/Ti3C2(O, OH)x hybrids toward efficient photocatalytic hydrogen evolution and environmental remediation
Abstract
Abstract Exploring new hybridized catalysts for synergistically promoting the photocatalytic efficiency hold great challenges in solar-to-chemical energy conversion and environmental remediation. Hierarchical Zn2In2S5/Ti3C2(O, OH)x hybrids have been rationally constructed using Ti3C2(O, OH)x as a two-dimensional platform for in situ growth of flower-like Zn2In2S5 microsphere under anaerobically hydrothermal conditions. Upon exposure to visible light, the Zn2In2S5/Ti3C2(O, OH)x hybrids with the Ti3C2(O, OH)x content of 1.5% (by mass) had hydrogen generation yields of 12,983.8 μmol g−1, which was significantly better than that of pure Zn2In2S5. The apparent quantum efficiency reached 8.96% at 420 nm. Furthermore, the photocatalytic tetracycline removal rate was ˜1.25 times higher than that of pure Zn2In2S5, and can be further improved with the increase of temperature in the range of 35–55 °C. Excellent photocatalytic activity originated from the synergistic effects between visible-light-active Zn2In2S5 and conductive Ti3C2(O, OH)x for spatial electrical promotion. The photogenerated-electrons transfer efficiency from Zn2In2S5 to Ti3C2(O, OH)x was 33.0%. In accordance with spectroscopic, electrochemical, and density functional theory studies, we proposed that the interfacial-built-in quasi-alloying effect between ZIS and Ti3C2(O, OH)x culminated in notable charge redistribution, which thereby facilitated the spatial separation and transfer of photogenerated electron-hole pairs. This work revealed the underlying photo-excited charge transfer between metallic compound and semiconductor.
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Metal-free efficient photocatalyst for stable visible water splitting via a two-electron pathway
Liu, J., Liu, Y., Liu, N., Han, Y., Zhang, X., Huang, H., Lifshitz, Y., Lee, S.-T., Zhong, J., & Kang, Z. (2015) · Science · doi:10.1126/science.aaa3145 · Cited by 4,468
2D MXenes: A New Family of Promising Catalysts for the Hydrogen Evolution Reaction
Gao, G., O’Mullane, A. P., & Du, A. (2017) · ACS Catalysis · doi:10.1021/acscatal.6b02754 · Cited by 1,153
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
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
Qin, C., Wang, H., Yuan, X., Xiong, T., Zhang, J., & Zhang, J. (2020) · Chemical Engineering Journal · doi:10.1016/j.cej.2019.122977 · Cited by 205
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Metadata
- Authors
- Wang, H., Sun, Y., Wu, Y., Tu, W., Wu, S., Yuan, X., Zeng, G., Xu, Z. J., Li, S., & Chew, J. W.
- Venue
- Applied Catalysis B: Environmental
- Publisher
- Elsevier BV
- Published
- 2019-05
- Volume
- 245
- Pages
- 290-301
- ISSN
- 0926-3373 (ISSN-L)
- OpenAlex
- W2906083340
- Cited by
- 287
- References
- 2
- FWCI
- 7.97
- Type
- journal article
- Language
- en
- Open access
- closed
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- The paper
- Wang, H., Sun, Y., Wu, Y., Tu, W., Wu, S., Yuan, X., Zeng, G., Xu, Z. J., Li, S., & Chew, J. W. (2019). Electrical promotion of spatially photoinduced charge separation via interfacial-built-in quasi-alloying effect in hierarchical Zn2In2S5/Ti3C2(O, OH)x hybrids toward efficient photocatalytic hydrogen evolution and environmental remediation. Applied Catalysis B: Environmental. https://doi.org/10.1016/j.apcatb.2018.12.051
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