Shows enhanced CO2 photoreduction performance in metal organic frameworks via ferrocene modification, suggesting new methods for sustainable energy conversion.
Metal organic frameworks (MOFs) with tunable structures and high surface areas offer a versatile platform for photocatalyst design. Herein, we report a node engineering strategy by incorporating ferrocenecarboxylic acid (Fca) and ferroceneacetic acid (Fcaa) in situ into MOF-545 via stable Zr–O coordination bonds, aiming to enhance its CO2 photoreduction performance. The structural and chemical properties of the resulting MOF-545-Fca and MOF-545-Fcaa were systematically characterized using powder X-ray diffraction (PXRD), Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and other techniques, confirming the successful incorporation of ferrocene without disrupting MOF’s crystalline structure. The introduction of ferrocene constructs a potential dual-channel electron transfer pathway, extending the light-harvesting range, accelerating interfacial electron transport, and suppressing photogenerated electron–hole recombination. The synthesized MOF-545-Fcaa exhibits the highest CO production rate of 940.2 μmol·g–1·h–1, which is 1.88 times and 16.1 times higher than that of MOF-545 (500.7 μmol·g–1·h–1) and pristine MOF-545 without Fe center (58.4 μmol·g–1·h–1), respectively. In-situ attenuated total reflection infrared (ATR-IR) spectroscopy reveals the reaction pathway. This work demonstrates the effectiveness of ferrocene-based node engineering in optimizing MOF photocatalysts, providing valuable insights into the rational design of high-performance materials for CO2 photoreduction and sustainable energy conversion.
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Li et al. (2026) studied this question.
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