Defect Dominated Hierarchical Ti-Metal-Organic Frameworks via a Linker Competitive Coordination Strategy for Toluene Removal

Jie Jin; Ping Li; Do Hyung Chun; Bingjun Jin; Kan Zhang; Jong Hyeok Park

doi:10.1002/adfm.202102511

Defect Dominated Hierarchical Ti-Metal-Organic Frameworks via a Linker Competitive Coordination Strategy for Toluene Removal

Jie Jin, Ping Li, Do Hyung Chun, Bingjun Jin, Kan Zhang, Jong Hyeok Park

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

Constructing a hierarchically porous structure in metal–organic frameworks (MOFs) can improve the accessibility of active sites and facilitate mass diffusion to enhance their adsorption and catalytic efficiency. Here, a novel linker competitive coordination strategy based on the electronegativity difference of two kinds of organic linkers is proposed to tailor the porous structure of Ti-MOF (MIL-125). A series of Ti-MOFs with continuously tunable hierarchical porosity is obtained by simply adjusting the molar ratios of two organic linkers. The demonstration of toluene removal shows that the competitive coordination strategy not only contributes to wide pore size distribution to enhance the adsorption performance of toluene, but also endows good charge separation ability to facilitate photocatalytic performance. Finally, the toluene removal efficiency of optimal Ti-MOF with mixed organic linkers of 1:1 molar ratio is 2.14 times and 1.88 times of the pristine MIL-125 and MIL-125(NH₂), respectively. This strategy opens a new prospect to optimize Ti-MOF properties for various heterogeneous catalysis applications.

Original language	English
Article number	2102511
Journal	Advanced Functional Materials
Volume	31
Issue number	32
DOIs	https://doi.org/10.1002/adfm.202102511
Publication status	Published - 2021 Aug 9

Bibliographical note

Funding Information:
J.J. and P.L. contributed equally to this work. This work was supported by NRF Korea (NRF‐2019R1A2C3010479, 2019M1A2A2065612, 2019M3E6A1064525, 2019R1A4A1029237, 2017M3A7B4041987).

Funding Information:
J.J. and P.L. contributed equally to this work. This work was supported by NRF Korea (NRF-2019R1A2C3010479, 2019M1A2A2065612, 2019M3E6A1064525, 2019R1A4A1029237, 2017M3A7B4041987).

Publisher Copyright:
© 2021 Wiley-VCH GmbH

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1002/adfm.202102511

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title = "Defect Dominated Hierarchical Ti-Metal-Organic Frameworks via a Linker Competitive Coordination Strategy for Toluene Removal",

abstract = "Constructing a hierarchically porous structure in metal–organic frameworks (MOFs) can improve the accessibility of active sites and facilitate mass diffusion to enhance their adsorption and catalytic efficiency. Here, a novel linker competitive coordination strategy based on the electronegativity difference of two kinds of organic linkers is proposed to tailor the porous structure of Ti-MOF (MIL-125). A series of Ti-MOFs with continuously tunable hierarchical porosity is obtained by simply adjusting the molar ratios of two organic linkers. The demonstration of toluene removal shows that the competitive coordination strategy not only contributes to wide pore size distribution to enhance the adsorption performance of toluene, but also endows good charge separation ability to facilitate photocatalytic performance. Finally, the toluene removal efficiency of optimal Ti-MOF with mixed organic linkers of 1:1 molar ratio is 2.14 times and 1.88 times of the pristine MIL-125 and MIL-125(NH2), respectively. This strategy opens a new prospect to optimize Ti-MOF properties for various heterogeneous catalysis applications.",

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note = "Funding Information: J.J. and P.L. contributed equally to this work. This work was supported by NRF Korea (NRF‐2019R1A2C3010479, 2019M1A2A2065612, 2019M3E6A1064525, 2019R1A4A1029237, 2017M3A7B4041987). Funding Information: J.J. and P.L. contributed equally to this work. This work was supported by NRF Korea (NRF-2019R1A2C3010479, 2019M1A2A2065612, 2019M3E6A1064525, 2019R1A4A1029237, 2017M3A7B4041987). Publisher Copyright: {\textcopyright} 2021 Wiley-VCH GmbH",

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AU - Zhang, Kan

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N2 - Constructing a hierarchically porous structure in metal–organic frameworks (MOFs) can improve the accessibility of active sites and facilitate mass diffusion to enhance their adsorption and catalytic efficiency. Here, a novel linker competitive coordination strategy based on the electronegativity difference of two kinds of organic linkers is proposed to tailor the porous structure of Ti-MOF (MIL-125). A series of Ti-MOFs with continuously tunable hierarchical porosity is obtained by simply adjusting the molar ratios of two organic linkers. The demonstration of toluene removal shows that the competitive coordination strategy not only contributes to wide pore size distribution to enhance the adsorption performance of toluene, but also endows good charge separation ability to facilitate photocatalytic performance. Finally, the toluene removal efficiency of optimal Ti-MOF with mixed organic linkers of 1:1 molar ratio is 2.14 times and 1.88 times of the pristine MIL-125 and MIL-125(NH2), respectively. This strategy opens a new prospect to optimize Ti-MOF properties for various heterogeneous catalysis applications.

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Defect Dominated Hierarchical Ti-Metal-Organic Frameworks via a Linker Competitive Coordination Strategy for Toluene Removal

Abstract

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