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[ZIF-62] Intermarrying MOF glass and lead halide perovskites for artificial photosynthesis
Summary:
The authors from The University of Queensland developed a novel composite material combining lead halide perovskites and Rh-functionalized MOF glass, achieving high efficiency in artificial photosynthesis for NADH regeneration and CO2 reduction.
Background:
1. To address the challenges of low efficiency and instability in photocatalytic systems for artificial photosynthesis, previous researchers explored various materials and methods, achieving some success. However, limitations remain in terms of light absorption, electron transfer, and long-term stability.
2. The authors proposed an innovative method of integrating lead halide perovskites with Rh-functionalized MOF glass to enhance photocatalytic performance and achieve efficient NADH regeneration and CO2 reduction.
Research Content:
1. Synthesis:
The authors synthesized the composite material by embedding CsPbI3 perovskites into Rh-functionalized ZIF-62 MOF glass using a mechanochemical process and thermal treatment.
2. Characterizations:
1) BET results showed a reduction in porosity with increasing Rh loading.
2) SEM/TEM tests revealed the particle size and morphology of the composite material.
3) X-ray absorption spectroscopy (XAS) and photoluminescence (PL) measurements confirmed the successful incorporation of Rh and the enhanced light absorption properties.
3. Application:
The composite material demonstrated high efficiency in photocatalytic NADH regeneration and CO2 reduction to formic acid, with a NADH yield of 60.4% and a selectivity of 76.1%.
4. Mechanism:
The analysis of experimental results indicated that the perovskite phase enhanced light absorption, while the Rh sites facilitated electron transfer, leading to improved photocatalytic performance. The formation of an alloyed interface between the perovskite and MOF glass further enhanced electron mobility.
Outlook:
This research highlights the potential of combining perovskites and MOF glass for efficient artificial photosynthesis, offering insights into the design of advanced photocatalytic systems with improved stability and performance.
Intermarrying MOF glass and lead halide perovskites for artificial photosynthesis
Authors: Wengang Huang, Bun Chan, Yuwei Yang, Peng Chen, Jingjing Wang, Lachlan Casey, Cesare Atzori, Tobias Schulli, Olivier Mathon, Haira G. Hackbarth, Nicholas M. Bedford, Dominique Appadoo, Xuemei Li, Tongen Lin, Rijia Lin, Jaeho Lee, Zhiliang Wang, Vicki Chen, Anthony K. Cheetham, Lianzhou Wang, Jingwei Hou
DOI: 10.1021/jacs.4c12619
Link: https://pubs.acs.org/doi/10.1021/jacs.4c12619
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