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| Main Authors: | , , , , , |
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| Format: | Artículo Open Access |
| Published: |
Wiley
2026
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| Subjects: | |
| Online Access: | https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cssc.70743 |
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Table of Contents:
- NiSe 2 /Twinned‐MnCdS Dual‐Junction for Enhanced Photocatalytic Hydrogen Performance Ning Li Yurong Wang Yanping Qiu Yaqi Zhang Yangqin Gao Lei Ge ChemSusChem Efficient charge separation and migration are crucial for advancing semiconductor photocatalysis. Herein, a twinned MnCdS homojunction (T‐MCS) composed of wurtzite MnCdS (WZ‐MCS) and zinc‐blende MnCdS (ZB‐MCS) was synthesized via a hydrothermal method and then coupled with NiSe 2 through an oil‐bath method to construct a homo‐heterojunction system. The internal twin boundaries in T‐MCS facilitate electron redistribution and enhance carrier transfer, while the interface coupling with NiSe 2 further promotes spatial charge separation through the heterojunction. Notably, the optimized 5 wt% NiSe 2 /T‐MCS achieves a remarkable hydrogen production rate of 5.17 mmol g −1 h −1 , which is 3.9 and 10.5 times higher than those of pristine T‐MCS (1.33 mmol g −1 h −1 ) and pure WZ‐MCS (0.49 mmol g −1 h −1 ), respectively. Density functional theory (DFT) calculations, combined with experimental analysis, demonstrate that the synergistic interaction between twin homojunction and NiSe 2 ‐based heterojunction constructs multiple internal electric fields, thereby facilitating directional charge migration and suppressing recombination, resulting in a superior photocatalytic performance of NiSe 2 /T‐MCS. This research offers a prospective strategy for designing efficient photocatalysts by integrating twinned structure engineering with a dual‐junction approach. 10.1002/cssc.70743 http://onlinelibrary.wiley.com/termsAndConditions#vor