Abstract

Transition based metal–organic frameworks (MOFs) demonstrate significant potential for thermal catalysis owing to their high density of active metal sites, and tunable porous structure. Especially understanding the correlation between the three-dimensional (3D) structure and its catalytic performance is pivotal for designing highly efficient, stable, and selectively active thermal catalysts. Here, based on MIL-53(Fe) and its derivatives heat-treated at varying temperatures, we comprehensively investigated their 3D structures and properties using 3D reconstruction techniques in transmission electron microscopy. The specimen, pyrolysis at 800 °C in air, exhibits optimal performance used as the catalyst for CO2 hydrogenation, achieving 21.4 % CO2 conversion and 100 % CO selectivity. Additionally, it presents exceptionally high activity and thermal stability after reaction for 120 h. Detailed insights into the morphology, composition, pore, and surface crystallography of an individual MIL-53(Fe) and its pyrolysis product particle, respectively, are provided by 3D reconstruction at nanoscale to correlate these structural features with their catalytic performance. This research contributes valuable experimental data and theoretical insights for the structural modulation and performance enhancement of MOF-based catalysts.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.