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<p>Effective charge separation is crucial for efficient photocatalytic hydrogen production in metal–organic frameworks (MOFs). Herein, CdS-modified MOFs composites Y-TPTC/CdS and Y-TPTC-NH<sub>2</sub>/CdS were synthesized with ordered porous structures and abundant active sites. Under visible light irradiation, Y-TPTC/CdS and Y-TPTC-NH<sub>2</sub>/CdS exhibit optimal proportional hydrogen production rates of 1936 and 5650&#xa0;µmol&#xa0;g<sup>−1</sup>&#xa0;h<sup>−1</sup>, respectively, representing 9.4 and 27.1 times higher than that of pure CdS (205&#xa0;µmol&#xa0;g<sup>−1</sup>&#xa0;h<sup>−1</sup>). The introduction of amino groups effectively suppressed recombination of photogenerated charge carriers, facilitating more efficient charge transfer and significantly boosting photocatalytic hydrogen production activity. This work provides important insights for developing advanced composite photocatalysts with improved charge separation kinetics for enhanced solar-to-hydrogen conversion efficiency.</p> Graphical abstract <p></p>

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Amino-regulated charge separation in MOF/CdS heterostructures for boosted photocatalytic hydrogen evolution

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • Ya-Ning Liu,
  • Yu-Jun Zhu,
  • Song Yang,
  • Zhong-Hua Sun,
  • Yi Cheng,
  • Meng-Qi Zheng,
  • Yu-Pei Zhao,
  • Cheng Lian,
  • Yun-Fei Bu,
  • Vladimir Guskov,
  • Ming-Yang He,
  • Hua-Zhang Guo,
  • Liang Wang,
  • Zhi-Hui Zhang

摘要

Effective charge separation is crucial for efficient photocatalytic hydrogen production in metal–organic frameworks (MOFs). Herein, CdS-modified MOFs composites Y-TPTC/CdS and Y-TPTC-NH2/CdS were synthesized with ordered porous structures and abundant active sites. Under visible light irradiation, Y-TPTC/CdS and Y-TPTC-NH2/CdS exhibit optimal proportional hydrogen production rates of 1936 and 5650 µmol g−1 h−1, respectively, representing 9.4 and 27.1 times higher than that of pure CdS (205 µmol g−1 h−1). The introduction of amino groups effectively suppressed recombination of photogenerated charge carriers, facilitating more efficient charge transfer and significantly boosting photocatalytic hydrogen production activity. This work provides important insights for developing advanced composite photocatalysts with improved charge separation kinetics for enhanced solar-to-hydrogen conversion efficiency.

Graphical abstract