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A Mohamed W, Chakraborty J, Bourda L, Lavendomme R, Liu C, Morent R, De Geyter N, Van Hecke K, Kaczmarek AM, Van Der Voort P. Engineering Porosity and Functionality in a Robust Twofold Interpenetrated Bismuth-Based MOF: Toward a Porous, Stable, and Photoactive Material. J Am Chem Soc 2024; 146:13113-13125. [PMID: 38700843 DOI: 10.1021/jacs.3c14739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Defect engineering in metal-organic frameworks (MOFs) has gained worldwide research traction, as it offers tools to tune the properties of MOFs. Herein, we report a novel 2-fold interpenetrated Bi-based MOF made of a tritopic flexible organic linker, followed by missing-linker defect engineering. This procedure creates a gradually augmented micro- and mesoporosity in the parent (originally nonporous) network. The resulting MOFs can tolerate a remarkable extent of linker vacancy (with absence of up to 60% of linkers per Bi node) created by altering the crystal-growth rate as a function of synthesis temperature and duration. Owing to the enhanced porosity and availability of the uncoordinated Lewis acidic Bi sites, the defect-engineered MOFs manifested improved surface areas, augmented CO2 and water vapor uptake, and catalytic activity. Parallel to this, the impact of defect engineering on the optoelectronic properties of these MOFs has also been studied, offering avenues for new applications.
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Affiliation(s)
- Wafaa A Mohamed
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium
- Department of Chemistry, Faculty of Science, South Valley University, Qena 83523, Egypt
| | - Jeet Chakraborty
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium
| | - Laurens Bourda
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium
- XStruct, Department of Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium
| | - Roy Lavendomme
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium
- Laboratoire de Chimie Organique (LCO), Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, Brussels B-1050, Belgium
| | - Chunhui Liu
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium
- NanoSensing, Department of Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium
| | - Rino Morent
- RUPT-Research Unit Plasma Technology, Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41-B4, Ghent 9000, Belgium
| | - Nathalie De Geyter
- RUPT-Research Unit Plasma Technology, Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41-B4, Ghent 9000, Belgium
| | - Kristof Van Hecke
- XStruct, Department of Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium
| | - Anna M Kaczmarek
- NanoSensing, Department of Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium
| | - Pascal Van Der Voort
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium
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Ganesan A, Metz PC, Thyagarajan R, Chang Y, Purdy SC, Jayachandrababu KC, Page K, Sholl DS, Nair S. Structural and Adsorption Properties of ZIF-8-7 Hybrid Materials Synthesized by Acid Gas-Assisted and De Novo Routes. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:23956-23965. [PMID: 38115817 PMCID: PMC10726363 DOI: 10.1021/acs.jpcc.3c06334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/02/2023] [Accepted: 11/08/2023] [Indexed: 12/21/2023]
Abstract
The tuning of micropore environments in zeolitic imidazolate frameworks (ZIFs) by mixed-linker synthesis has the potential for enabling new molecular separation properties. However, de novo synthesis of mixed-linker (hybrid) ZIFs is often challenging due to the disparate chemical properties of the different linkers. Here, we elucidate the structure and properties of an unconventional ZIF-8-7 hybrid material synthesized via a controlled-acid-gas-assisted degradation and reconstruction (solvent-assisted crystal redemption, SACRed) strategy. Selective insertion of benzimidazole (ZIF-7 linker) into ZIF-8 using SACRed is used as a facile method to generate a ZIF-8-7 hybrid material that is otherwise difficult to synthesize by de novo methods. Detailed crystal structure and textural characterizations clarify the significant differences in the microstructure of the SACRed-derived ZIF-8-7 hybrid material relative to a de novo synthesized hybrid of the same overall linker composition as well as the parent ZIF-8 material. Unary and binary adsorption measurements reveal the tunability of adsorption characteristics as well as the prevalence of nonideal cooperative mixture adsorption effects that lead to large deviations from predictions made with ideal adsorbed solution theory.
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Affiliation(s)
- Arvind Ganesan
- School
of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Peter C. Metz
- Materials
Science and Engineering Department, University
of Tennessee, Knoxville, Tennessee 37996, United States
| | - Raghuram Thyagarajan
- School
of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Yuchen Chang
- School
of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Stephen C. Purdy
- Neutron
Scattering Division, Oak Ridge National
Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Krishna C. Jayachandrababu
- School
of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Katharine Page
- Materials
Science and Engineering Department, University
of Tennessee, Knoxville, Tennessee 37996, United States
- Neutron
Scattering Division, Oak Ridge National
Laboratory, Oak Ridge, Tennessee 37830, United States
| | - David S. Sholl
- School
of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- Oak
Ridge National Laboratory, Oak
Ridge, Tennessee 37830, United States
| | - Sankar Nair
- School
of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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