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Zhang H, Wang B, Xiong M, Gao C, Ren H, Ma L. Process intensification in gas-liquid mass transfer by nanofluids: Mechanism and current status. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Wang D, Xin Y, Li X, Ning H, Wang Y, Yao D, Zheng Y, Meng Z, Yang Z, Pan Y, Li P, Wang H, He Z, Fan W. Transforming Metal-Organic Frameworks into Porous Liquids via a Covalent Linkage Strategy for CO 2 Capture. ACS APPLIED MATERIALS & INTERFACES 2021; 13:2600-2609. [PMID: 33403847 DOI: 10.1021/acsami.0c18707] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Porous liquids (PLs), an emerging kind of liquid materials with permanent porosity, have attracted increasing attention in gas capture. However, directly turning metal-organic frameworks (MOFs) into PLs via a covalent linkage surface engineering strategy has not been reported. Additionally, challenges including reducing the cost and simplifying the preparation process are daunting. Herein, we proposed a general method to transform Universitetet i Oslo (UiO)-66-OH MOFs into PLs by surface engineering with organosilane (OS) and oligomer species via covalent bonding linkage. The oligomer species endow UiO-66-OH with superior fluidity at room temperature. Meanwhile, the resulting PLs showed great potential in both CO2 adsorption and CO2/N2 selective separation. The residual porosity of PLs was verified by diverse characterizations and molecular simulations. Besides, CO2 selective capture sites were determined by grand canonical Monte Carlo (GCMC) simulation. Furthermore, the universality of the covalent linkage surface engineering strategy was confirmed using different classes of oligomer species and another MOF (ZIF-8-bearing amino groups). Notably, this strategy can be extended to construct other PLs by taking advantages of the rich library of oligomer species, thus making PLs promising candidates for further applications in energy and environment-related fields, such as gas capture, separation, and catalysis.
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Affiliation(s)
- Dechao Wang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Yangyang Xin
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Xiaoqian Li
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Hailong Ning
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710021, P. R. China
| | - Yudeng Wang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Dongdong Yao
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Yaping Zheng
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Zhuoyue Meng
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710021, P. R. China
| | - Zhiyuan Yang
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710021, P. R. China
- Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Natural Resources, Xi'an 710021, P. R. China
| | - Yuting Pan
- Queen Mary University of London Engineering School, Northwestern Polytechnical University, Xi'an, Shaanxi 710129, P. R. China
| | - Peipei Li
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, Shaanxi 710071, P. R. China
| | - Hongni Wang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Zhongjie He
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
| | - Wendi Fan
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, P. R. China
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Choi S, Moon S, Park Y. Spectroscopic Investigation of Entropic Canopy-Canopy Interactions of Nanoparticle Organic Hybrid Materials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:9626-9633. [PMID: 32683866 DOI: 10.1021/acs.langmuir.0c01784] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Nanoparticle organic hybrid materials (NOHMs) are self-suspended liquid-like nanoparticle-based functional materials consisting of a surface-functionalized inorganic nanocore and oligomeric or polymeric chains. They often exhibit complex intermolecular and intramolecular interactions among their constituents, resulting in versatile physicochemical characteristics that range from glassy solids to solvent-free nanoparticle fluids. A variety of applications involving NOHMs have been investigated thus far, including thermal management fluids, lubricants, magnetic fluids, nanocomposites, electrolytes, water treatment and biomass pretreatment chemicals, and CO2 capture solvents. In particular, NOHMs have recently been recognized as a promising CO2 capture and utilization medium. To capture CO2 more effectively, a variety of specific functional groups of strong chemical affinity to CO2 can be added to the polymeric canopy (enthalpic contribution), and various steric considerations induced by attractive/repulsive interactions among the nanocores and canopies can be introduced (entropic contribution). These occur while maintaining negligible vapor pressure and enhanced thermal stability. Here, we investigated the canopy dynamics of NOHMs with different-sized SiO2 nanocores, aiming to reveal the hidden nature of the entropic interaction occurring in NOHMs. Pulse-field gradient nuclear magnetic resonance spectroscopy (with 1H) was employed to investigate the canopy dynamics of the NOHMs synthesized using 7, 12, and 22 nm SiO2 particles, and these results were compared with those from a ternary mix of all three sizes of SiO2 nanocores. The self-diffusion coefficient and thermal diffusivity were also evaluated.
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Affiliation(s)
- Soyoung Choi
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Seokyoon Moon
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Youngjune Park
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
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Wang D, Yao D, Wang Y, Wang F, Xin Y, Song S, Zhang Z, Su F, Zheng Y. Carbon nanotubes and graphene oxide-based solvent-free hybrid nanofluids functionalized mixed-matrix membranes for efficient CO2/N2 separation. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.04.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Wang D, Zheng Y, Yao D, Yang Z, Xin Y, Wang F, Wang Y, Ning H, Wu H, Wang H. Liquid-like CNT/SiO2 nanoparticle organic hybrid materials as fillers in mixed matrix composite membranes for enhanced CO2-selective separation. NEW J CHEM 2019. [DOI: 10.1039/c9nj02789k] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Liquid-like nanoparticle organic hybrid materials with core/canopy/corona were used as fillers in Pebax-1657 matrix to fabricate mixed-matrix membranes. The effect of composite core composition on CO2/N2 separation performance was systematically investigated.
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