Carboxyl-functionalized covalent organic framework as a two-dimensional nanofiller for mixed-matrix ultrafiltration membranes

Duong, Phuoc H.H.; Kuehl, Valerie A.; Mastorovich, Bruce; Hoberg, John O.; Parkinson, B. A.; Li-Oakey, Katie Dongmei

doi:10.1016/j.memsci.2018.12.042

Cited by 101 publications

(85 citation statements)

References 55 publications

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“…In particular, the flux of B2 32:1 stay at a high level of about 638 Lm −2 h −1 bar −1 , and the rejection rate reaches to 96%. This membrane performance mentioned above is found to be comparable to that of some recently reported polymer ultrafiltration membranes at 0.1 MPa [41,42] Third, in this work, we find that the optimal separation performance of membranes occurs at different ratios of NaHCO3 to TCPP. The synergistic effect from NaHCO3 to TCPP can explain why the optimal ratio shifts in different membrane systems.…”

Section: Water Flux and Bsa Rejection Of Tcpp/psf Membranessupporting

confidence: 88%

Improved Performance of Polysulfone Ultrafiltration Membrane Using TCPP by Post-Modification Method

Jia

Sun

et al. 2020

Membranes

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Ultrafiltration (UF) membranes have found great application in sewage purification and desalination due to their high permeation flux and high rejection rate for contaminants under low-pressure conditions, but the flux and antifouling ability of UF membranes needs to be improved. Tetrakis (4-carboxyphenyl) porphyrin (TCPP) has good hydrophilicity, and it is protonated under strongly acidic conditions and then forms strong hydrogen bonds with N, O and S, so that the TCPP would be well anchored in the membrane. In this work, NaHCO 3 was used to dissolve TCPP and TMC (trimesoyl chloride) was used to produce a strong acid. Then, TCPP was modified in a membrane with a different rejection rate by a method similar to interfacial polymerization. Performance tests of TCPP/polysulfone (PSf) membranes show that for the membrane with a high BSA (bovine serum albumin) rejection, when the ratio of NaHCO 3 to TCPP is 16:1 (wt.%), the pure water flux of membrane Z1 16:1 is increased by 34% (from 455 to 614 Lm −2 h −1 bar −1 ) while the membrane retention was maintained above 95%. As for the membrane with a low BSA rejection, when the ratio of NaHCO 3 to TCPP was 32:1, the rejection of membrane B2 32:1 was found to increase from 81% to 96%. Although the flux of membrane B2 32:1 decreased, it remained at 638 Lm −2 h −1 bar −1 , which is comparable to the reported polymer ultrafiltration membrane. The above dual results are thought to be attributed to the synergistic effect of protonated TCPP and NaHCO 3 , where the former increases membrane flux and the latter increases the membrane rejection rate. This work provides a way for the application of porphyrin and porphyrin framework materials in membrane separation.

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Section: Water Flux and Bsa Rejection Of Tcpp/psf Membranessupporting

confidence: 88%

Improved Performance of Polysulfone Ultrafiltration Membrane Using TCPP by Post-Modification Method

Jia

Sun

et al. 2020

Membranes

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“…Finally, the peak at 1640 cm –1 was seen in MDAC–cys, which could be assigned to the C=N stretching. 62…”

Section: Resultsmentioning

confidence: 99%

Arsenic(III) Removal by Nanostructured Dialdehyde Cellulose–Cysteine Microscale and Nanoscale Fibers

Chen

Sharma

et al. 2019

ACS Omega

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Arsenite (As(III)) contamination in drinking water has become a worldwide problem in recent years, which leads to development of various As(III) remediation approaches. In this study, two biomass-based nanostructured materials, microscale dialdehyde cellulose–cysteine (MDAC–cys) and nanoscale dialdehyde cellulose–cysteine (NDAC–cys) fibers, have been prepared from wood pulp. Their As(III) removal efficiencies and mechanism were determined by combined adsorption, atomic fluorescence spectrometry, microscopy (scanning electron microscopy, transmission electron microscopy, and atomic force microscopy), and spectroscopy (Fourier transform infrared, 13C CPMAS NMR) methods. The adsorption results of these materials could be well described by the Freundlich isotherm model, where the maximum adsorption capacities estimated by the Langmuir isotherm model were 344.82 mg/g for MDAC–cys and 357.14 mg/g for NDAC–cys, respectively. Both MDAC–cys and NDAC–cys materials were further characterized by X-ray diffraction and thermogravimetric analysis, where the results indicated that the thiol groups (the S content in MDAC–cys was 12.70 and NDAC–cys was 17.15%) on cysteine were primarily responsible for the adsorption process. The nanostructured MDAC–cys system appeared to be more suitable for practical applications because of its high cost-effectiveness.

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“…Desalination, OSN, and pervaporation which concern about salt rejection, organic solvent separation, and multicomponent liquid mixture separation will be listed as individual subsections in this section. Composites membranes such as mix matrix membranes (MMMs) [226][227][228] and thin film composites (TFC) [229][230][231] are major existing forms of the membranes, and defect-free freestanding film has also been explored. The main parameters for functional porous polymer-derived separation membranes, including the substrate membrane, preparation method, membrane thickness, permeance and rejection rates, are summarized in Table 3, which involves aqueous organic pollutants filtration, desalination, and OSN to provide an overall comparison of the membrane methodology.…”

Section: Membrane Separationmentioning

confidence: 99%

Emerging Functional Porous Polymeric and Carbonaceous Materials for Environmental Treatment and Energy Storage

Zheng

Lin

Zhang

et al. 2019

Adv Funct Materials

200

118

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The demand for practical and cost-effective environmental treatment and energy storage materials is exploding. Porous polymeric and carbonaceous materials have attracted tremendous interest on account of their welldeveloped porosity and tunable surface chemistry. Functionalization of pore structures further enhances their properties for environmental treatment and energy storage. Herein, the procedures for functionalization of porous structures are introduced, including predesign and postsynthetic strategies. Subsequently, the important advancements of emerging porous polymers for environmental treatment in sorption (e.g., organic micropollutant adsorption, heavy metal ion removal, radionuclide extraction, and oil absorption) and membrane separation (e.g., aqueous micropollutant separation, organic solvent nanofiltration, desalination and pervaporation), as well as for energy storage ranging from the electrodes and separators of batteries to supercapacitor electrodes are highlighted. Moreover, given the combined merits of high intrinsic conductivity, porosity, and physicochemical stability, novel polymer-based porous carbons for energy storage are also highlighted. Key functionalization chemistry for each application is discussed and an in-depth understanding of the structure-property relationships of these functional porous materials is provided. Finally, the challenges and perspectives of emerging functional porous polymeric and carbonaceous materials for environmental treatment and energy storage are proposed.

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Carboxyl-functionalized covalent organic framework as a two-dimensional nanofiller for mixed-matrix ultrafiltration membranes

Cited by 101 publications

References 55 publications

Improved Performance of Polysulfone Ultrafiltration Membrane Using TCPP by Post-Modification Method

Improved Performance of Polysulfone Ultrafiltration Membrane Using TCPP by Post-Modification Method

Arsenic(III) Removal by Nanostructured Dialdehyde Cellulose–Cysteine Microscale and Nanoscale Fibers

Emerging Functional Porous Polymeric and Carbonaceous Materials for Environmental Treatment and Energy Storage

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