Home >
News > Surface-Plasmon-Enhanced Photodriven CO₂ Reduction Catalyzed by Metal–Organic-Framework-Derived Iron Nanoparticles Encapsulated by Ultrathin Carbon Layers
Surface-Plasmon-Enhanced Photodriven CO₂ Reduction Catalyzed by Metal–Organic-Framework-Derived Iron Nanoparticles Encapsulated by Ultrathin Carbon Layers
Summary:
The authors from the National Institute for Materials Science (NIMS) and TU-NIMS Joint Research Center developed a Fe@C material with ultrathin carbon layers encapsulating iron nanoparticles, achieving significant results in the solar-driven CO₂ reduction field.
Background:
1. The increased atmospheric CO₂ level and depletion of fossil fuel reserves raise concerns about climate change and future energy supply. Photocatalytic CO₂ reduction is a promising solution but faces challenges such as limited visible light utilization, poor selectivity, and low conversion rates.
2. The authors proposed using a MOF-derived Fe@C catalyst to address these issues, achieving high CO selectivity and conversion rates in solar-driven CO₂ reduction.
Research Content:
1. Synthesis:
The authors synthesized the Fe@C material using a two-step calcination method. First, MIL-101(Fe) was heated at 500°C in Ar gas, followed by an increase to 700°C to form the Fe@C hybrid.
2. Characterizations:
1) The BET surface area of the Fe@C product was measured to be 146.26 m²/g.
2) SEM/TEM tests showed that the Fe nanoparticles were uniformly dispersed with an average diameter of around 9.7 nm and were well coated by ultrathin carbon layers (1–3 layers).
3) UV-vis-NIR spectra indicated strong photon absorption over a broad range, and in situ monitoring showed significant temperature increases upon photoirradiation.
3. Application:
The Fe@C catalyst was tested in a batch-type reaction system for CO₂ reduction. It demonstrated a high CO yield of 2196.17 µmol after 120 min of light irradiation and a CO selectivity of over 99.9%.
4. Mechanism:
The analysis revealed that UV-light-induced surface plasmon resonances in Fe nanoparticles enhanced CO₂ activation. DFT calculations showed that the carbon layers promoted CO desorption, increasing CO selectivity. Electromagnetic field simulations indicated amplified plasmon-photon coupling at the Fe@C interface.
Outlook:
This research integrates photo- and thermo-catalytic processes, offering a new approach for efficient solar-driven CO₂ conversion. It provides insights into designing advanced materials for sustainable energy applications.
Surface-Plasmon-Enhanced Photodriven CO₂ Reduction Catalyzed by Metal–Organic-Framework-Derived Iron Nanoparticles Encapsulated by Ultrathin Carbon Layers
Authors: Huabin Zhang, Tao Wang, Junjie Wang, Huimin Liu, Thang Duy Dao, Mu Li, Guigao Liu, Xianguang Meng, Kun Chang, Li Shi, Tadaaki Nagao, Jinhua Ye
DOI: 10.1002/adma.201505187
Link: https://onlinelibrary.wiley.com/doi/10.1002/adma.201505187
The above review is for academic progress sharing. For any errors or copyright issues, please contact us for correction or removal.
