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A layered lead halide framework intercalated with Ru(bpy)3 for efficient CO2 photoreduction

Author

Listed:
  • Yilin Jiang

    (Tongji University)

  • Ruonan Xi

    (Tongji University
    Southeast University)

  • Jinlin Yin

    (Tongji University)

  • Chen Sun

    (Tongji University)

  • Yukong Li

    (Tongji University)

  • Chao Wu

    (Tongji University)

  • Chi Zhang

    (Tongji University)

  • Honghan Fei

    (Tongji University)

Abstract

Three-dimensional lead halide hybrids exhibit excellent photophysical properties but suffer from inherent instability. In contrast, two-dimensional layered lead halides offer enhanced environmental stability, yet their strongly bound excitons restrict efficient charge transport. Here we present a covalent intercalation strategy involving the benchmark photosensitizer [Ru(bpy)3]2+ into a layered lead halide framework, featuring cationic [Pb23X42]4+ (X− = Cl− or Br−) layers pillared by [Ru(bpy)3]2+ ligands via Pb2+-carboxylate coordination. This hybrid material achieves nearly full visible-light absorption and efficient photoinduced charge transfer from [Ru(bpy)3]2+ to the lead halide layers. This affords efficient CO2-to-CO photoreduction with an apparent quantum efficiency of ~3.0% at 500 nm, exceeding the performance of all previously reported organolead halide photocatalysts. Mechanistic studies indicate that the [Ru(bpy)3]2+ ligands enhance charge transport to Pb2+ sites, facilitating CO2 activation and reducing the reaction barrier for the *COOH intermediate. This work establishes a paradigm for intercalation chemistry in robust layered lead halide hybrids.

Suggested Citation

  • Yilin Jiang & Ruonan Xi & Jinlin Yin & Chen Sun & Yukong Li & Chao Wu & Chi Zhang & Honghan Fei, 2025. "A layered lead halide framework intercalated with Ru(bpy)3 for efficient CO2 photoreduction," Nature Communications, Nature, vol. 16(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-60954-4
    DOI: 10.1038/s41467-025-60954-4
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