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The Role of Water in Carbon Dioxide Adsorption in Porphyrinic Metal-Organic Frameworks

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Journal ChemCatChem
Date 2024 Mar 20
PMID 38505862
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Abstract

Capturing and converting CO through artificial photosynthesis using photoactive, porous materials is a promising approach for addressing increasing CO concentrations. Porphyrinic Zr-based metal-organic frameworks (MOFs) are of particular interest as they incorporate a photosensitizer in the porous structure. Herein, the initial step of the artificial photosynthesis is studied: CO sorption and activation in the presence of water. A combined vibrational and visible spectroscopic approach was used to monitor the adsorption of CO into PCN-222 and PCN-223 MOFs, and the photophysical changes of the porphyrinic linker as a function of water concentration. A shift in CO sorption site and bending of the porphyrin macrocycle in response to humidity was observed, and CO/HO competition experiments revealed that the exchange of CO with HO is pore-size dependent. Therefore, humidity and pore-size can be used to tune CO sorption, CO capacity, and light harvesting in porphyrinic MOFs, which are key factors for CO photoreduction.

Citing Articles

Adsorption in Pyrene-Based Metal-Organic Frameworks: The Role of Pore Structure and Topology.

Pougin M, P Domingues N, Uran F, Ortega-Guerrero A, Ireland C, Espin J ACS Appl Mater Interfaces. 2024; 16(28):36586-36598.

PMID: 38978297 PMC: 11261566. DOI: 10.1021/acsami.4c05527.


The Role of Water in Carbon Dioxide Adsorption in Porphyrinic Metal-Organic Frameworks.

Baumgartner B, Prins P, Louwen J, Monai M, Weckhuysen B ChemCatChem. 2024; 15(19):e202300722.

PMID: 38505862 PMC: 10946852. DOI: 10.1002/cctc.202300722.

References
1.
van Lenthe E, Baerends E . Optimized Slater-type basis sets for the elements 1-118. J Comput Chem. 2003; 24(9):1142-56. DOI: 10.1002/jcc.10255. View

2.
Hale G, Querry M . Optical Constants of Water in the 200-nm to 200-microm Wavelength Region. Appl Opt. 2010; 12(3):555-63. DOI: 10.1364/AO.12.000555. View

3.
Deibert B, Li J . A distinct reversible colorimetric and fluorescent low pH response on a water-stable zirconium-porphyrin metal-organic framework. Chem Commun (Camb). 2014; 50(68):9636-9. DOI: 10.1039/c4cc01938e. View

4.
Baumgartner B, Hayden J, Loizillon J, Steinbacher S, Grosso D, Lendl B . Pore Size-Dependent Structure of Confined Water in Mesoporous Silica Films from Water Adsorption/Desorption Using ATR-FTIR Spectroscopy. Langmuir. 2019; 35(37):11986-11994. DOI: 10.1021/acs.langmuir.9b01435. View

5.
Fang Z, Liu T, Liu J, Jin S, Wu X, Gong X . Boosting Interfacial Charge-Transfer Kinetics for Efficient Overall CO Photoreduction via Rational Design of Coordination Spheres on Metal-Organic Frameworks. J Am Chem Soc. 2020; 142(28):12515-12523. DOI: 10.1021/jacs.0c05530. View