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<p>The development of efficient and stable photocatalysts remains a key objective for advancing photocatalytic hydrogen (H<sub>2</sub>) evolution. This study introduces a rapid one-step synthesis to fabricate amine-functionalized Zn<sub>1-x</sub>Cd<sub>x</sub>S over ZnS-ethylenediamine (ZC/Z-EDA) inorganic–organic hybrid materials. The incorporation of amine component serves dual functions. It facilitates the formation of Z-EDA nanosheets featuring a tunable band structure while simultaneously enabling the precise anchoring of ZC onto the Z-EDA surfaces. This precise anchoring establishes an intimate contact interface between the hybrid components. Within this engineered architecture, the coexistence of strategically induced defects, optimized interlayer charge transfer channels, and tailored type-II heterojunctions operates synergistically. This combination significantly enhances visible light absorption efficiency, promotes the separation and migration of photogenerated charge carriers, and isolates reactive sites. Consequently, the optimized ZC/Z-EDA hybrid demonstrates a 4338-fold increase in photocatalytic H<sub>2</sub> evolution rate under visible light compared to pristine Z-EDA alone. Furthermore, it achieves an apparent quantum efficiency of 43.7% at 420&#xa0;nm. This work presents a scalable and practical approach for constructing efficient inorganic–organic heterostructured photocatalytic systems.</p>

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Amine−functionalized 2D/2D inorganic–organic hybrids with enhanced photocatalytic hydrogen evolution performance under visible light

  • 期刊论文

  • 发表日期：

    2025年12月22日

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  • Ming Guo,
  • Mingming Sun,
  • Liya Xie,
  • Qiang Wang

摘要

The development of efficient and stable photocatalysts remains a key objective for advancing photocatalytic hydrogen (H2) evolution. This study introduces a rapid one-step synthesis to fabricate amine-functionalized Zn1-xCdxS over ZnS-ethylenediamine (ZC/Z-EDA) inorganic–organic hybrid materials. The incorporation of amine component serves dual functions. It facilitates the formation of Z-EDA nanosheets featuring a tunable band structure while simultaneously enabling the precise anchoring of ZC onto the Z-EDA surfaces. This precise anchoring establishes an intimate contact interface between the hybrid components. Within this engineered architecture, the coexistence of strategically induced defects, optimized interlayer charge transfer channels, and tailored type-II heterojunctions operates synergistically. This combination significantly enhances visible light absorption efficiency, promotes the separation and migration of photogenerated charge carriers, and isolates reactive sites. Consequently, the optimized ZC/Z-EDA hybrid demonstrates a 4338-fold increase in photocatalytic H2 evolution rate under visible light compared to pristine Z-EDA alone. Furthermore, it achieves an apparent quantum efficiency of 43.7% at 420 nm. This work presents a scalable and practical approach for constructing efficient inorganic–organic heterostructured photocatalytic systems.