1
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Clark JA, Robinson S, Espinoza EM, Bao D, Derr JB, Croft L, O'Mari O, Grover WH, Vullev VI. Poly(dimethylsiloxane) as a room-temperature solid solvent for photophysics and photochemistry. Phys Chem Chem Phys 2024; 26:8062-8076. [PMID: 38372740 DOI: 10.1039/d3cp05413f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Medium viscosity strongly affects the dynamics of solvated species and can drastically alter the deactivation pathways of their excited states. This study demonstrates the utility of poly(dimethylsiloxane) (PDMS) as a room-temperature solid-state medium for optical spectroscopy. As a thermoset elastic polymer, PDMS is transparent in the near ultraviolet, visible, and near infrared spectral regions. It is easy to mould into any shape, forming surfaces with a pronounced smoothness. While PDMS is broadly used for the fabrication of microfluidic devices, it swells in organic solvents, presenting severe limitations for the utility of such devices for applications employing non-aqueous fluids. Nevertheless, this swelling is reversible, which proves immensely beneficial for loading samples into the PDMS solid matrix. Transferring molecular-rotor dyes (used for staining prokaryotic cells and amyloid proteins) from non-viscous solvents into PDMS induces orders-of-magnitude enhancement of their fluorescence quantum yield and excited-state lifetimes, providing mechanistic insights about their deactivation pathways. These findings demonstrate the unexplored potential of PDMS as a solid solvent for optical applications.
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Affiliation(s)
- John A Clark
- Department of Bioengineering, University of California, Riverside, CA 92521, USA.
| | - Samantha Robinson
- Department of Bioengineering, University of California, Riverside, CA 92521, USA.
| | - Eli M Espinoza
- Department of Chemistry, University of California, Riverside, CA 92521, USA
| | - Duoduo Bao
- Department of Bioengineering, University of California, Riverside, CA 92521, USA.
| | - James B Derr
- Department of Biochemistry, University of California, Riverside, CA 92521, USA
| | - Luca Croft
- Department of Bioengineering, University of California, Riverside, CA 92521, USA.
| | - Omar O'Mari
- Department of Bioengineering, University of California, Riverside, CA 92521, USA.
| | - William H Grover
- Department of Bioengineering, University of California, Riverside, CA 92521, USA.
| | - Valentine I Vullev
- Department of Bioengineering, University of California, Riverside, CA 92521, USA.
- Department of Chemistry, University of California, Riverside, CA 92521, USA
- Department of Biochemistry, University of California, Riverside, CA 92521, USA
- Materials Science and Engineering Program, University of California, Riverside, CA 92521, USA
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2
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Xu LH, Li SH, Mao H, Li Y, Zhang AS, Wang S, Liu WM, Lv J, Wang T, Cai WW, Sang L, Xie WW, Pei C, Li ZZ, Feng YN, Zhao ZP. Highly flexible and superhydrophobic MOF nanosheet membrane for ultrafast alcohol-water separation. Science 2022; 378:308-313. [PMID: 36264816 DOI: 10.1126/science.abo5680] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
High-performance pervaporation membranes have potential in industrial separation applications, but overcoming the permeability-selectivity trade-off is a challenge. We report a strategy to create highly flexible metal-organic framework nanosheet (MOF-NS) membranes with a faveolate structure on polymer substrates for alcohol-water separation. The controlled growth followed by a surface-coating method effectively produced flexible and defect-free superhydrophobic MOF-NS membranes. The reversible deformation of the flexible MOF-NS and the vertical interlamellar pathways were captured with electron microscopy. Molecular simulations confirmed the structure and revealed transport mechanism. The ultrafast transport channels in MOF-NS exhibited an ultrahigh flux and a separation factor of 8.9 in the pervaporation of 5 weight % ethanol-water at 40°C, which can be used for biofuel recovery. MOF-NS and polydimethylsiloxane synergistically contribute to the separation performance.
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Affiliation(s)
- Li-Hao Xu
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Shen-Hui Li
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Heng Mao
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Yan Li
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Ao-Shuai Zhang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Sen Wang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Wei-Min Liu
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Jing Lv
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Tao Wang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Wei-Wei Cai
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Le Sang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Wen-Wen Xie
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Chan Pei
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Zheng-Zheng Li
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Ying-Nan Feng
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
| | - Zhi-Ping Zhao
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P.R. China
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3
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Wang M, Jiang J. Accelerating Discovery of High Fractional Free Volume Polymers from a Data-Driven Approach. ACS APPLIED MATERIALS & INTERFACES 2022; 14:31203-31215. [PMID: 35767720 DOI: 10.1021/acsami.2c03917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
As a fundamental structure characteristic in polymers, fractional free volume (FFV) plays an indispensable role in governing polymer properties and performance. However, the design of new high-FFV polymers is challenging. In this study, we report a data-driven approach and aim to accelerate the discovery of high-FFV polymers. First, a computational method is proposed to calculate FFV, and a two-step fragmentation method is developed to construct a fragment library for digital representation of polymer structures. Data mining is employed to identify promising fragments for high FFV. Subsequently, machine learning (ML) models are trained using a data set with 1683 polymers and their excellent transferability is demonstrated by out-of-sample predictions in another data set with 11,479 polymers. Finally, the ML models are used to screen ∼1 million hypothetical polymers, and 29,482 polymers with FFV > 0.2 are shortlisted; representative high-FFV polymers are validated by molecular simulations, and design strategies are highlighted. To further facilitate the discovery of new high-FFV polymers, we develop an online interactive platform https://ffv-prediction.herokuapp.com, which allows for rapid FFV predictions, given polymer structures. The data-driven approach in this study might advance the development of new high-FFV polymers and further explore quantitative structure-property relationships for polymers.
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Affiliation(s)
- Mao Wang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 117576 Singapore, Singapore
| | - Jianwen Jiang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 117576 Singapore, Singapore
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4
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Highly permeable reverse osmosis membranes incorporated with hydrophilic polymers of intrinsic microporosity via interfacial polymerization. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2021.05.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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5
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Yang G, Xie Z, Cran M, Wu C, Gray S. Dimensional Nanofillers in Mixed Matrix Membranes for Pervaporation Separations: A Review. MEMBRANES 2020; 10:E193. [PMID: 32825195 PMCID: PMC7559426 DOI: 10.3390/membranes10090193] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 08/11/2020] [Accepted: 08/18/2020] [Indexed: 01/08/2023]
Abstract
Pervaporation (PV) has been an intriguing membrane technology for separating liquid mixtures since its commercialization in the 1980s. The design of highly permselective materials used in this respect has made significant improvements in separation properties, such as selectivity, permeability, and long-term stability. Mixed-matrix membranes (MMMs), featuring inorganic fillers dispersed in a polymer matrix to form an organic-inorganic hybrid, have opened up a new avenue to facilely obtain high-performance PV membranes. The combination of inorganic fillers in a polymer matrix endows high flexibility in designing the required separation properties of the membranes, in which various fillers provide specific functions correlated to the separation process. This review discusses recent advances in the use of nanofillers in PV MMMs categorized by dimensions including zero-, one-, two- and three-dimensional nanomaterials. Furthermore, the impact of the nanofillers on the polymer matrix is described to provide in-depth understanding of the structure-performance relationship. Finally, the applications of nanofillers in MMMs for PV separation are summarized.
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Affiliation(s)
- Guang Yang
- Institute for Sustainable Industries and Liveable Cities, Victoria University, P.O. Box 14428, Melbourne, VIC 8001, Australia; (G.Y.); (M.C.)
- CSIRO Manufacturing, Private bag 10, Clayton South, VIC 3169, Australia
| | - Zongli Xie
- CSIRO Manufacturing, Private bag 10, Clayton South, VIC 3169, Australia
| | - Marlene Cran
- Institute for Sustainable Industries and Liveable Cities, Victoria University, P.O. Box 14428, Melbourne, VIC 8001, Australia; (G.Y.); (M.C.)
| | - Chunrui Wu
- State Key Laboratory of Separation Membranes and Membrane Processes, Institute of Biological and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China;
| | - Stephen Gray
- Institute for Sustainable Industries and Liveable Cities, Victoria University, P.O. Box 14428, Melbourne, VIC 8001, Australia; (G.Y.); (M.C.)
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Si Z, Li G, Wang Z, Cai D, Li S, Baeyens J, Qin P. A Particle-Driven, Ultrafast-Cured Strategy for Tuning the Network Cavity Size of Membranes with Outstanding Pervaporation Performance. ACS APPLIED MATERIALS & INTERFACES 2020; 12:31887-31895. [PMID: 32551481 DOI: 10.1021/acsami.0c05859] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Poly(dimethylsiloxane) (PDMS) membranes are widely used for bioethanol separation. However, the network cavity size r3 of PDMS membranes is generally smaller than the ethanol kinetic radius (0.225 nm), which limits the transport of ethanol molecules and weakens the pervaporation performance. Herein, we proposed a particle-driven, ultrafast-cured strategy to overcome the above key issue: (1) Incorporating particles into PDMS for preventing polymer chains from packing tightly, (2) freezing particles within a PDMS layer by the ultrafast UV-cross-linking for improving its distribution and increasing the chain extension of the polymer, and (3) covalently bonding particles with PDMS to enhance their compatibility. Consequently, r3 was increased to 0.262 nm, and an extremely high loading membrane (50 wt %) with an ultrashort curing time (20 s) was prepared, which is difficult to be realized by the conventional thermally driven approach. As a result, a separation factor of 13.4 with a total flux of 2207 g m-2 h-1 for separating ethanol from a 5 wt % aqueous solution at 60 °C was obtained. This strategy shows the feasibility of recovery of different bioalcohols and the large-scale continuous membrane preparation.
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Affiliation(s)
- Zhihao Si
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, China
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Guozhen Li
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, China
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ze Wang
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, China
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Di Cai
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, China
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Shufeng Li
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, China
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jan Baeyens
- Beijing Advanced Innovation Centre of Soft Matter and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- School of Engineering, University of Warwick, Coventry CV4 7AL, U.K
| | - Peiyong Qin
- National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, China
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
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7
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Cao JJ, Hou ZS, Tian ZN, Hua JG, Zhang YL, Chen QD. Bioinspired Zoom Compound Eyes Enable Variable-Focus Imaging. ACS APPLIED MATERIALS & INTERFACES 2020; 12:10107-10117. [PMID: 32046483 DOI: 10.1021/acsami.9b21008] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Natural compound eyes provide the inspiration for developing artificial optical devices that feature a large field of view (FOV). However, the imaging ability of artificial compound eyes is generally based on the large number of ommatidia. The lack of a tunable imaging mechanism significantly limits the practical applications of artificial compound eyes, for instance, distinguishing targets at different distances. Herein, we reported zoom compound eyes that enable variable-focus imaging by integrating a deformable poly(dimethylsiloxane) (PDMS) microlens array (MLA) with a microfluidic chamber. The thin and soft PDMS MLA was fabricated by soft lithography using a hard template prepared by a combined technology of femtosecond laser processing and wet etching. As compared with other mechanical machining strategies, our combined technology features high flexibility, efficiency, and uniformity, as well as designable processing capability, since the size, distribution, and arrangement of the ommatidia can be well controlled during femtosecond laser processing. By tuning the volume of water injected into the chamber, the PDMS MLA can deform from a planar structure to a hemispherical shape, evolving into a tunable compound eye of variable FOV up to 180°. More importantly, the tunable chamber can functionalize as the main zoom lens for tunable imaging, which endows the compound eye with the additional capability of distinguishing targets at different distances. Its focal length can be turned from 3.03 mm to infinity with an angular resolution of 3.86 × 10-4 rad. This zoom compound eye combines the advantages of monocular eyes and compound eyes together, holding great promise for developing advanced micro-optical devices that enable large FOV and variable-focus imaging.
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Affiliation(s)
- Jia-Ji Cao
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Zhi-Shan Hou
- State Key Laboratory of Precision Measurement Technology & Instruments, Department of Precision Instrument, Tsinghua University, Haidian District, Beijing 100084, China
| | - Zhen-Nan Tian
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Jian-Guan Hua
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Yong-Lai Zhang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Qi-Dai Chen
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
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8
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Location determination of metal nanoparticles relative to a metal-organic framework. Nat Commun 2019; 10:3462. [PMID: 31371708 PMCID: PMC6671962 DOI: 10.1038/s41467-019-11449-6] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 07/16/2019] [Indexed: 01/02/2023] Open
Abstract
Metal nanoparticles (NPs) stabilized by metal-organic frameworks (MOFs) have been intensively studied in recent decades, while investigations on the location of guest metal NPs relative to host MOF particles remain challenging and very rare. In this work, we have developed several characterization techniques, including high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) tomography, hyperpolarized 129Xe NMR spectroscopy and positron annihilation spectroscopy (PAS), which are able to determine the specific location of metal NPs relative to the MOF particle. The fine PdCu NPs confined inside MIL-101 exhibit excellent catalytic activity, absolute selectivity and satisfied recyclability in the aerobic oxidation of benzyl alcohol in pure water. As far as we know, the determination for the location of metal NPs relative to MOF particles and pore structure information of metal NPs/MOF composites by 129Xe NMR and PAS techniques has not yet been reported. While metal nanoparticles (NPs) stabilized by metal-organic frameworks (MOFs) have been intensively studied, the determination of the location of guest metal NPs relative to host MOF particles remains challenging. Here the authors develop several techniques to determine the specific location of metal NPs relative to the MOF particles.
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Sharma P, Kim YJ, Kim MZ, Alam SF, Cho CH. A stable polymeric chain configuration producing high performance PEBAX-1657 membranes for CO 2 separation. NANOSCALE ADVANCES 2019; 1:2633-2644. [PMID: 36132731 PMCID: PMC9419191 DOI: 10.1039/c9na00170k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 05/12/2019] [Indexed: 06/11/2023]
Abstract
Although PEBAX-1657 is one of the promising polymeric materials for selective CO2 separation, there remain many questions about the optimal polymeric structure and possibility of improving performance without adulterating its basic structure by impregnating inorganic fillers. In order to improve the gas separation performance, low thickness PEBAX membranes were synthesized under steady solvent evaporation conditions by keeping in mind that one of its segments (nylon 6) shows structural variance and molecular orientation with a change in the evaporation rate. Furthermore, phase pure zeolite nanocrystals with cubic (zeolite A) and octahedral (zeolite Y) shapes have been synthesized through liquid phase routes using microwave hydrothermal reactors. The average sizes of zeolite A and Y crystals are around 55 and 40 nm, respectively. The inspection of XRD, DSC and Raman shift of PEBAX membranes demonstrates the formation of a stable polymeric structure with an improved crystalline state which results in high CO2 permeability membranes. The CO2 permeability as well as diffusivity increase with a decrease in membrane thickness and reach a maximum value of 184.7 Barrer and 2.6 × 10-6 cm2 s-1, respectively. The as-fabricated pristine PEBAX membrane shows much better performance in terms of permeance (CO2 184.7 Barrer), diffusivity (CO2 2.6 × 10-6 cm2 s-1) and selectivity (CO2/N2 59.7), which substantiate its promising prospects for CO2 capture. This exceptional performance of the pristine PEBAX membrane arises from the free volume generated during the steady polymerization. This reported approach for PEBAX membrane synthesis provides a direction in the design of membrane fabrication processes for economic CO2 separation.
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Affiliation(s)
- Pankaj Sharma
- Graduate School of Energy Science and Technology, Chungnam National University 99 Daehak-ro, Yuseong-gu Daejeon 34134 Republic of Korea
| | - Young-Jin Kim
- Graduate School of Energy Science and Technology, Chungnam National University 99 Daehak-ro, Yuseong-gu Daejeon 34134 Republic of Korea
| | - Min-Zy Kim
- Graduate School of Energy Science and Technology, Chungnam National University 99 Daehak-ro, Yuseong-gu Daejeon 34134 Republic of Korea
| | - Syed Fakhar Alam
- Graduate School of Energy Science and Technology, Chungnam National University 99 Daehak-ro, Yuseong-gu Daejeon 34134 Republic of Korea
| | - Churl Hee Cho
- Graduate School of Energy Science and Technology, Chungnam National University 99 Daehak-ro, Yuseong-gu Daejeon 34134 Republic of Korea
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10
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The potential of pervaporation for biofuel recovery from fermentation: An energy consumption point of view. Chin J Chem Eng 2019. [DOI: 10.1016/j.cjche.2018.09.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Fang T, Wang M, Gao Y, Zhang Y, Yan Y, Zhang J. Enhanced oil recovery with CO2/N2 slug in low permeability reservoir: Molecular dynamics simulation. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2018.12.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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12
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He K, Wong TC, Lau GS. Ionic liquid-based high-voltage flexible supercapacitor for integration with wearable human-powered energy harvesting system. J APPL ELECTROCHEM 2018. [DOI: 10.1007/s10800-018-1274-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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He X, Wang T, Li Y, Chen J, Li J. Fabrication and characterization of micro-patterned PDMS composite membranes for enhanced ethanol recovery. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.06.015] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Kang BG, Kim DG, Register RA. Vinyl Addition Copolymers of Norbornylnorbornene and Hydroxyhexafluoroisopropylnorbornene for Efficient Recovery of n-Butanol from Dilute Aqueous Solution via Pervaporation. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00470] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Beom-Goo Kang
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Dong-Gyun Kim
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Richard A. Register
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
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15
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Mani S, Khare R. Effect of Chain Flexibility and Interlayer Interactions on the Local Dynamics of Layered Polymer Systems. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b01519] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sriramvignesh Mani
- Department of Chemical Engineering, Texas Tech University, Box 43121, Lubbock, Texas 79409-3121, United States
| | - Rajesh Khare
- Department of Chemical Engineering, Texas Tech University, Box 43121, Lubbock, Texas 79409-3121, United States
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16
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Stevens DM, Shu JY, Reichert M, Roy A. Next-Generation Nanoporous Materials: Progress and Prospects for Reverse Osmosis and Nanofiltration. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b02411] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Derek M. Stevens
- Dow Water and Process Solutions, 7600 Metro Boulevard, Edina, Minnesota 55439, United States
| | - Jessica Y. Shu
- Dow Water and Process Solutions, 7600 Metro Boulevard, Edina, Minnesota 55439, United States
| | - Matthew Reichert
- Dow Water and Process Solutions, 7600 Metro Boulevard, Edina, Minnesota 55439, United States
| | - Abhishek Roy
- Dow Water and Process Solutions, 7600 Metro Boulevard, Edina, Minnesota 55439, United States
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17
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Villalobos LF, Huang T, Peinemann KV. Cyclodextrin Films with Fast Solvent Transport and Shape-Selective Permeability. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1606641. [PMID: 28437014 DOI: 10.1002/adma.201606641] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 03/16/2017] [Indexed: 06/07/2023]
Abstract
This study describes the molecular-level design of a new type of filtration membrane made of crosslinked cyclodextrins-inexpensive macrocycles of glucose, shaped like hollow truncated cones. The channel-like cavities of cyclodextrins spawn numerous paths of defined aperture in the separation layer that can effectively discriminate between molecules. The transport of molecules through these membranes is highly shape-sensitive. In addition, the presence of hydrophobic (cavity) and hydrophilic (ester-crosslinked outer part) domains in these films results in high permeances for both polar and nonpolar solvents.
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Affiliation(s)
- Luis Francisco Villalobos
- King Abdullah University of Science and Technology (KAUST), Advanced Membranes and Porous Materials Center, Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Tiefan Huang
- King Abdullah University of Science and Technology (KAUST), Advanced Membranes and Porous Materials Center, Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Klaus-Viktor Peinemann
- King Abdullah University of Science and Technology (KAUST), Advanced Membranes and Porous Materials Center, Thuwal, 23955-6900, Kingdom of Saudi Arabia
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18
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Ashraf AR, Ryan JJ, Satkowski MM, Lee B, Smith SD, Spontak RJ. Bicomponent Block Copolymers Derived from One or More Random Copolymers as an Alternative Route to Controllable Phase Behavior. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201700207] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 04/27/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Arman R. Ashraf
- Corporate Research and Development The Procter and Gamble Company Cincinnati OH 45224 USA
| | - Justin J. Ryan
- Department of Materials Science and Engineering North Carolina State University Raleigh NC 27695 USA
| | - Michael M. Satkowski
- Corporate Research and Development The Procter and Gamble Company Cincinnati OH 45224 USA
| | - Byeongdu Lee
- Advanced Photon Source Argonne National Laboratory Argonne IL 60439 USA
| | - Steven D. Smith
- Corporate Research and Development The Procter and Gamble Company Cincinnati OH 45224 USA
| | - Richard J. Spontak
- Department of Materials Science and Engineering North Carolina State University Raleigh NC 27695 USA
- Department of Chemical and Biomolecular Engineering North Carolina State University Raleigh NC 27695 USA
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19
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Cheng XQ, Konstas K, Doherty CM, Wood CD, Mulet X, Xie Z, Ng D, Hill MR, Lau CH, Shao L. Organic Microporous Nanofillers with Unique Alcohol Affinity for Superior Ethanol Recovery toward Sustainable Biofuels. CHEMSUSCHEM 2017; 10:1887-1891. [PMID: 28349608 DOI: 10.1002/cssc.201700362] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 03/24/2017] [Indexed: 06/06/2023]
Abstract
To minimize energy consumption and carbon footprints, pervaporation membranes are fast becoming the preferred technology for alcohol recovery. However, this approach is confined to small-scale operations, as the flux of standard rubbery polymer membranes remain insufficient to process large solvent volumes, whereas membrane separations that use glassy polymer membranes are prone to physical aging. This study concerns how the alcohol affinity and intrinsic porosity of networked, organic, microporous polymers can simultaneously reduce physical aging and drastically enhance both flux and selectivity of a super glassy polymer, poly-[1-(trimethylsilyl)propyne] (PTMSP). Slight loss in alcohol transportation channels in PTMSP is compensated by the alcohol affinity of the microporous polymers. Even after continuous exposure to aqueous solutions of alcohols, PTMSP pervaporation membranes loaded with the microporous polymers outperform the state-of-the-art and commercial pervaporation membranes.
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Affiliation(s)
- Xi Quan Cheng
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P.R. China
- Manufacturing, CSIRO, Gate 3 Normanby Road, Clayton, VIC, 3169, Australia
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai, 264209, P.R. China
| | - Kristina Konstas
- Manufacturing, CSIRO, Gate 3 Normanby Road, Clayton, VIC, 3169, Australia
| | - Cara M Doherty
- Manufacturing, CSIRO, Gate 3 Normanby Road, Clayton, VIC, 3169, Australia
| | - Colin D Wood
- Australian Resources Research Centre, CSIRO, Kensington, WA6155, Australia
| | - Xavier Mulet
- Manufacturing, CSIRO, Gate 3 Normanby Road, Clayton, VIC, 3169, Australia
| | - Zongli Xie
- Manufacturing, CSIRO, Gate 3 Normanby Road, Clayton, VIC, 3169, Australia
| | - Derrick Ng
- Manufacturing, CSIRO, Gate 3 Normanby Road, Clayton, VIC, 3169, Australia
| | - Matthew R Hill
- Manufacturing, CSIRO, Gate 3 Normanby Road, Clayton, VIC, 3169, Australia
- Department of Chemical Engineering, Monash University, Clayton, VIC, 3800, Australia
| | - Cher Hon Lau
- Manufacturing, CSIRO, Gate 3 Normanby Road, Clayton, VIC, 3169, Australia
- Department of Chemical Engineering, University of Edinburgh, Edinburgh, EH9 3FL, United Kingdom
| | - Lu Shao
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P.R. China
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20
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Merlet RB, Tanardi CR, Vankelecom IF, Nijmeijer A, Winnubst L. Interpreting rejection in SRNF across grafted ceramic membranes through the Spiegler-Kedem model. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2016.12.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Tena A, Rangou S, Shishatskiy S, Filiz V, Abetz V. Claisen thermally rearranged (CTR) polymers. SCIENCE ADVANCES 2016; 2:e1501859. [PMID: 27482538 PMCID: PMC4966881 DOI: 10.1126/sciadv.1501859] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 06/29/2016] [Indexed: 06/06/2023]
Abstract
Thermally rearranged (TR) polymers, which are considered the next-generation of membrane materials because of their excellent transport properties and high thermal and chemical stability, are proven to have significant drawbacks because of the high temperature required for the rearrangement and low degree of conversion during this process. We demonstrate that using a [3,3]-sigmatropic rearrangement, the temperature required for the rearrangement of a solid glassy polymer was reduced by 200°C. Conversions of functionalized polyimide to polybenzoxazole of more than 97% were achieved. These highly mechanically stable polymers were almost five times more permeable and had more than two times higher degrees of conversion than the reference polymer treated under the same conditions. Properties of these second-generation TR polymers provide the possibility of preparing efficient polymer membranes in a form of, for example, thin-film composite membranes for various gas and liquid membrane separation applications.
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Affiliation(s)
- Alberto Tena
- Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str.1, 21502 Geesthacht, Germany
| | - Sofia Rangou
- Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str.1, 21502 Geesthacht, Germany
| | - Sergey Shishatskiy
- Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str.1, 21502 Geesthacht, Germany
| | - Volkan Filiz
- Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str.1, 21502 Geesthacht, Germany
| | - Volker Abetz
- Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str.1, 21502 Geesthacht, Germany
- Institute of Physical Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
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22
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Thornton AW, Jelfs KE, Konstas K, Doherty CM, Hill AJ, Cheetham AK, Bennett TD. Porosity in metal–organic framework glasses. Chem Commun (Camb) 2016; 52:3750-3. [DOI: 10.1039/c5cc10072k] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The porosity of a glass formed by melt-quenching a metal–organic framework, has been characterized by positron annihilation lifetime spectroscopy.
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Affiliation(s)
- A. W. Thornton
- Future Industries
- Commonwealth Scientific and Industrial Research Organisation
- Australia
| | - K. E. Jelfs
- Department of Chemistry
- Imperial College London
- South Kensington
- UK
| | - K. Konstas
- Future Industries
- Commonwealth Scientific and Industrial Research Organisation
- Australia
| | - C. M. Doherty
- Future Industries
- Commonwealth Scientific and Industrial Research Organisation
- Australia
| | - A. J. Hill
- Future Industries
- Commonwealth Scientific and Industrial Research Organisation
- Australia
| | - A. K. Cheetham
- Department of Materials Science and Metallurgy
- University of Cambridge
- UK
| | - T. D. Bennett
- Department of Materials Science and Metallurgy
- University of Cambridge
- UK
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