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An Inorganic/Organic S‐Scheme Heterojunction H2‐Production Photocatalyst and its Charge Transfer Mechanism
Abstract
Inspired by natural photosynthesis, constructing inorganic/organic heterojunctions is regarded as an effective strategy to design high‐efficiency photocatalysts. Herein, a step (S)‐scheme heterojunction photocatalyst is prepared by in situ growth of an inorganic semiconductor firmly on an organic semiconductor. A new pyrene‐based conjugated polymer, pyrene‐alt‐triphenylamine (PT), is synthesized via the typical Suzuki–Miyaura reactions, and then employed as a substrate to anchor CdS nanocrystals. The optimized CdS/PT composite, coupling 2 wt% PT with CdS, exhibits a robust H 2 evolution rate of 9.28 mmol h−1 g−1 with continuous release of H 2 bubbles, as well as a high apparent quantum efficiency of 24.3%, which is ≈8 times that of pure CdS. The S‐scheme charge transfer mechanism between PT and CdS, is systematically demonstrated by photoirradiated Kelvin probe measurement and in situ irradiated X‐ray photoelectron spectroscopy analyses. This work provides a protocol for preparing specific S‐scheme heterojunction photocatalysts on the basis of inorganic/organic coupling.
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Cites
TiO2 photocatalysis: Design and applications
Nakata, K., & Fujishima, A. (2012) · Journal of Photochemistry and Photobiology C: Photochemistry Reviews · doi:10.1016/j.jphotochemrev.2012.06.001 · Cited by 3,651
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Challenges for photocatalytic overall water splitting
Bie, C., Wang, L., & Yu, J. (2022) · Chem · doi:10.1016/j.chempr.2022.04.013 · Cited by 874
Self-citationGunawan, D., Zhang, J., Li, Q., Toe, C. Y., Scott, J., Antonietti, M., Guo, J., & Amal, R. (2024) · Advanced Materials · doi:10.1002/adma.202404618 · Cited by 325
Huang, H., Chen, Z., Yang, Y., Lin, Y., Fan, Y., Wu, X., Ji, Y., Wang, Y., Yang, C., Yu, Y., et al. (2025) · Advanced Functional Materials · doi:10.1002/adfm.202414298 · Cited by 19
Metadata
- Authors
- Cheng, C., He, B., Fan, J., Cheng, B., Cao, S., & Yu, J.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2021-04-26
- Volume
- 33
- Issue
- 22
- Pages
- e2100317-e2100317
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W3159662645
- Cited by
- 888
- References
- 1
- FWCI
- 30.37
- Type
- journal article
- Language
- en
- Open access
- closed
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- Cheng, C., He, B., Fan, J., Cheng, B., Cao, S., & Yu, J. (2021). An Inorganic/Organic S‐Scheme Heterojunction H2‐Production Photocatalyst and its Charge Transfer Mechanism. Advanced Materials. https://doi.org/10.1002/adma.202100317
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