Engineering gas separation property of metal–organic framework membranes via polymer insertion

Hung, Han-Lun; Iizuka, Tomonori; Deng, Xuepeng; Lyu, Qiang; Hsu, Cheng-Hsun; Oe, Noriyoshi; Lin, Lu; Hosono, Nobuhiko; Kang, Dun‐Yen

doi:10.1016/j.seppur.2023.123115

Cited by 13 publications

(7 citation statements)

References 72 publications

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“…However, previous reports have shown that free PEG chains have a high tendency to penetrate the cavities of porous materials (including cuboctahedral MOPs) and consequently, block access to the MOP pores. [27][28][29] In fact, our own data reveal this phenomenon: the CO2 uptake of BCN-93 (0.2 mmol CO2 g -1 ) was indeed much higher than that of the physical mixture of free PEG and COOH-RhMOP (0.018 mmol CO2 g -1 , Figure S17). Thus, we reasoned that the surface-bound PEG chains in BCN-93 are much less likely to block pores in the MOP than are the free PEG chains, probably due to the mutual steric hindrance imparted by the high surface density of PEG chains in the former.…”

mentioning

confidence: 73%

Porous and Meltable Metal-Organic Polyhedra for the Generation and Shaping of Porous Mixed-Matrix Composites

von Baeckmann,

Martínez-Esaín,

Suárez

et al. 2024

Preprint

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Here, we report the synthesis of BCN-93, a meltable, functionalized and permanently porous metal-organic polyhedron (MOP), and its subsequent transformation into amorphous or crystalline, shaped, self-standing, transparent porous films via melting and subsequent cooling. The synthesis entails the outer functionalization of a MOP with meltable polymer chains: in our model case, we functionalized a Rh(II)-based cuboctahedral MOP with polyethylene glycol (PEG). Finally, we demonstrate that once melted, BCN-93 can serve as a porous matrix into which other materials or molecules can be dispersed to form mixed-matrix composites. To illustrate this, we combined BCN-93 with one of various additives (either two MOF crystals, a porous cage, or a linear polymer) to generate a series of mixed-matrix films, each of which exhibited greater CO2 uptake relative to the parent film.

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mentioning

confidence: 73%

Porous and Meltable Metal-Organic Polyhedra for the Generation and Shaping of Porous Mixed-Matrix Composites

von Baeckmann,

Martínez-Esaín,

Suárez

et al. 2024

Preprint

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“…Reflecting on the high uptake of CO 2 by BCN-93, we reasoned that the cavity inside BCN-93 is empty and remains accessible in both of the MOP’s physical forms, despite the presence of surface-bound PEG chains. However, previous reports have shown that free PEG chains have a high tendency to penetrate the cavities of porous materials (including cuboctahedral MOPs) and, consequently, block access to the MOP pores. − In fact, our own data reveal this phenomenon: the CO 2 uptake of BCN-93 (0.2 mmol of CO 2 g –1 ) was indeed much higher than that of the physical mixture of free PEG and COOH-RhMOP (0.018 mmol of CO 2 g –1 , Figure S20). Thus, we reasoned that the surface-bound PEG chains in BCN-93 are much less likely to block pores in the MOP than are the free PEG chains, probably due to the mutual steric hindrance imparted by the high surface density of PEG chains in the former.…”

mentioning

confidence: 89%

Porous and Meltable Metal–Organic Polyhedra for the Generation and Shaping of Porous Mixed-Matrix Composites

Baeckmann,

Martínez-Esaín,

Suárez del Pino

et al. 2024

J. Am. Chem. Soc.

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Here, we report the synthesis of BCN-93, a meltable, functionalized, and permanently porous metal−organic polyhedron (MOP) and its subsequent transformation into amorphous or crystalline, shaped, self-standing, transparent porous films via melting and subsequent cooling. The synthesis entails the outer functionalization of a MOP with meltable polymer chains: in our model case, we functionalized a Rh(II)-based cuboctahedral MOP with poly(ethylene glycol). Finally, we demonstrate that once melted, BCN-93 can serve as a porous matrix into which other materials or molecules can be dispersed to form mixed-matrix composites. To illustrate this, we combined BCN-93 with one of various additives (either two MOF crystals, a porous cage, or a linear polymer) to generate a series of mixed-matrix films, each of which exhibited greater CO 2 uptake relative to the parent film.

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“…Vật liệu có cấu trúc tinh thể dạng khung khá linh hoạt và đa dạng, với diện tích bề mặt riêng lớn, và hoàn toàn có thể thay đổi được kích thước, hình dạng lỗ xốp dựa vào sự thay đổi của cấu tử hữu cơ và ion kim loại. Với những đặc điểm, tính chất đặc trưng này, MOFs đã thu hút được các nhà khoa học và công nghệ tập trung nghiên cứu chế tạo và ứng dụng trong nhiều lĩnh vực khác nhau như hấp phụ [9,10], lưu trữ và phân tách khí [11,12], cảm biến [13,14], vật liệu mang thuốc điều trị ung thư [15,16]… Một trong những hướng nghiên cứu tạo được sự chú ý của các nhà khoa học và công nghệ trên thế giới và trong nước là ứng dụng MOFs vào lĩnh vực hấp phụ cũng như xúc tác hoặc đồng thời nhằm loại bỏ các tác nhân gây độc đối với môi trường.…”

Section: Giới Thiệu Chungunclassified

Simultaneous adsorption-catalysis process for methylene blue removal using MOF-Fe/GNPs composites

Nguyen Thi Lan Anh,

Vu Dinh Ngo,

Tran Thi Hang

et al. 2023

Vietnam j. catal. adsorp.

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In this study, graphene nanoplatelets (GNPs) were combined with iron-organic framework materials using the ultrasonic method in a water/ethanol solvent. The resulting composite material had a clear crystalline morphology with a size range of 200 to 400 nm. The MOF-Fe particle grew in a particular order on GNPs, forming a uniform structure. The XRD diagram confirmed the presence of GNPs and MOF-Fe, with peaks at 21.103o and 26.728o assigned to GNPs, and peaks at 5.423o and 11.015o typical for MOF-Fe. The BET model estimated the surface area of MOF-Fe/GNPs at 441 m2/g. The composite showed high efficiency in treating chromogenic organic compounds through simultaneous adsorption and photocatalysis. Specifically, the material achieved over 80% methylene blue removal via adsorption mechanism after 2 hours, and 100% removal with simultaneous adsorption-photocatalysis treatment mechanism.

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Engineering gas separation property of metal–organic framework membranes via polymer insertion

Cited by 13 publications

References 72 publications

Porous and Meltable Metal-Organic Polyhedra for the Generation and Shaping of Porous Mixed-Matrix Composites

Porous and Meltable Metal-Organic Polyhedra for the Generation and Shaping of Porous Mixed-Matrix Composites

Porous and Meltable Metal–Organic Polyhedra for the Generation and Shaping of Porous Mixed-Matrix Composites

Simultaneous adsorption-catalysis process for methylene blue removal using MOF-Fe/GNPs composites

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