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Facilitating charge migration via interfacial C–S–Co pathway in CoS2/carbon nitride for efficient photocatalytic hydrogen evolution
发布时间：2026-08-14
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- 发布时间：
- 2026-08-14
- 论文名称：
- Facilitating charge migration via interfacial C–S–Co pathway in CoS2/carbon nitride for efficient photocatalytic hydrogen evolution
- 发表刊物：
- Chinese Chemical Letters
- 摘要：
- Sluggish charge-transfer kinetics and severe photoinduced charge recombination remain major obstacles in photocatalytic water splitting. Constructing efficient heterointerface within heterogeneous photocatalysts is considered as an effective strategy to address these limitations. In this work, a novel in-situ transformation approach was developed to integrate S-rich carbon nitride (SCN) with CoS2 nanocrystals (CoS), forming a well-defined and intimate interface. The optimized CoS2/SCN composite photocatalyst exhibited significantly enhanced photocatalytic performance, achieving a hydrogen evolution rate of 1.875 mmol h-1 g-1 (λ > 420 nm), approximately 36 times higher than that of pristine SCN. Structural and compositional characterizations confirmed the uniform dispersion of CoS2 nanocrystals within the tubular SCN, leading to the formation of a C–S–Co interfacial bond. Electronic structure and charge dynamics analyses further revealed that this C–S–Co interfacial bond acted as of charge carriers and facilitated the efficient separation of photoinduced electron-hole pairs and rapid migration of electrons in the photocatalyst. Theoretical calculations demonstrated that the strong interfacial interactions induced by the C–S–Co bond modulate the electronic states of SCN, thereby promoting photocatalytic activity. This work provides an insight for designing highly efficient heterointerface within heterogeneous photocatalysts towards photocatalytic hydrogen production.
- 通讯作者：
- Botong Zheng, Yi Zhao, Xiaohe Liu, Jinwen Shi,* Xianyan Xu, Jiamei Liu,* Qingyun Chen*
- 是否译文：
- 否
- 发表时间：
- 2026-08-13
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