scholarly journals Designing of a novel polyvinylidene fluoride/TiO2/UiO-66-NH2 membrane with photocatalytic antifouling properties using modified zirconium-based metal-organic framework

2021 ◽  
Author(s):  
Yi-Jing Li ◽  
Gui-E Chen ◽  
Lian-Jing Liu ◽  
Zhen-Liang Xu ◽  
Sun-Jie Xu ◽  
...  
Keyword(s):  
Phase Separation ◽  
Bovine Serum Albumin ◽  
Polyvinylidene Fluoride ◽  
Metal Organic Framework ◽  
Rejection Rate ◽  
Separation Performance ◽  
Recovery Ratio ◽  
Quantitative Measurements ◽  
Metal Organic ◽  
Bsa Rejection

Abstract Novel polyvinylidene fluoride/TiO2/UiO-66-NH2 (PVDF/TiUN) membranes were produced by the delay phase separation method via introducing the TiO2/UiO-66-NH2 (TiUN) nanocomposite into PVDF casting solution. Interconnection of TiO2 and UiO-66-NH2 improved photocatalysis capacity and endowed PVDF/TiUN membranes with self-cleaning capability. Quantitative measurements showed that, firstly, PVDF/TiUN membranes exhibited improved photodegradation kinetics and efficiency (up to 88.1%) to Rhodamine B (RhB). Secondly, the performances of bovine serum albumin (BSA) rejection and permeation of PVDF/TiUN membranes outperformed those of other check samples, indicating enhanced hydrophilicity. Thirdly, rejection rate of BSA reached to breathtaking 98.14% and flux recovery ratio (FRR) of BSA reached breathtaking 95.37%. Thus, given their excellent anti-contamination property and separation performance, the PVDF/TiUN membrane is very likely to be a novel water treatment membrane.

Fabrication and Characterization of PVDF/UiO-66(Zr) Mixed Matrix Membrane on Non-Woven PET Support

2020 ◽  
Vol 1005 ◽  
pp. 108-115
Author(s):  
John Rhoel Cementina ◽  
Michael V. Torres ◽  
Dante P. Bernabe ◽  
Stephen Lirio ◽  
Micah Belle Marie Yap Ang ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Polyvinylidene Fluoride ◽  
Gas Permeability ◽  
Metal Organic Framework ◽  
Pure Water ◽  
Polymer Concentration ◽  
Water Flux ◽  
Mixed Matrix Membrane ◽  
Mixed Matrix ◽  
Metal Organic

Polyvinylidene fluoride (PVDF) membranes, enhanced with metal-organic framework (MOF), were fabricated on a non-woven polyethylene terephthalate (PET) support using the non-solvent induced phase inversion (NIPS) method to produce mixed matrix membrane (MMM). Polymer concentration of 10%, 15%, and 20% were used in the study whereas UiO-66(Zr) was used as a MOF filler. The resulting membranes were characterized in terms of their morphology, porosity, wettability, mechanical strength, pure water flux, and gas permeability. Results show that the presence of UiO-66(Zr) filler improved membrane morphology, mechanical strength, and hydrophobicity of MMM as compared to pristine PVDF.

scholarly journals Enhancing the separation efficiency of a C2H2/C2H4 mixture by a chromium metal–organic framework fabricated via post-synthetic metalation

2020 ◽  
Vol 8 (4) ◽  
pp. 2083-2089 ◽  
Author(s):  
Fan Yu ◽  
Bing-Qian Hu ◽  
Xiao-Ning Wang ◽  
Yu-Meng Zhao ◽  
Jia-Luo Li ◽  
...  
Keyword(s):  
Separation Efficiency ◽  
Metal Organic Framework ◽  
Separation Performance ◽  
Metal Organic ◽  
Organic Framework

A new Cr metal–organic framework was fabricated via post-synthetic metalation, which exhibited enhanced separation performance for C2H2/C2H4 compared to its template of the isostructural Fe framework.

A novel interpenetrated anion-pillared porous material with high water tolerance afforded efficient C2H2/C2H4 separation

2019 ◽  
Vol 55 (34) ◽  
pp. 5001-5004 ◽  
Author(s):  
Lifeng Yang ◽  
Anye Jin ◽  
Lisha Ge ◽  
Xili Cui ◽  
Huabin Xing
Keyword(s):  
Porous Material ◽  
Metal Organic Framework ◽  
High Water ◽  
Separation Performance ◽  
Highly Efficient ◽  
Water Tolerance ◽  
Metal Organic ◽  
Organic Framework

A novel water stable interpenetrated anion-pillared metal-organic framework afforded highly efficient C2H2/C2H4 separation performance.

scholarly journals Improved Desulfurization Performance of Polyethyleneglycol Membrane by Incorporating Metal Organic Framework CuBTC

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 414 ◽  
Author(s):  
Caibin Cai ◽  
Xiaotao Fan ◽  
Xiaolong Han ◽  
Jiding Li ◽  
Harsh Vardhan
Keyword(s):  
Operating Temperature ◽  
Metal Organic Framework ◽  
Mixed Matrix Membrane ◽  
Separation Performance ◽  
Hybrid Membranes ◽  
Mixed Matrix ◽  
Metal Organic ◽  
Pervaporation Separation ◽  
Π Complexation

In this paper, copper benzene-1,3,5-tricarboxylate (CuBTC) was incorporated into polyethylenglyol (PEG) to prepare a mixed matrix membrane (MMM) for pervaporation desulfurization. The characterization results showed that the prepared CuBTC particles had an ideal octahedral shape and micropores. The Cu2+ in CuBTC interacts with thiophene via π-complexation, thus enhancing the separation performance of the hybrid membranes. The effect of CuBTC content and the operating condition on the pervaporation performance of the MMMs was investigated. An optimal pervaporation separation performance was acquired with a permeation flux of 2.21 kg/(m2·h) and an enrichment factor of 8.79, which were increased by 100% and 39% compared with the pristine PEG membrane. Moreover, the CuBTC-filled PEG membrane showed a good stability in the long-term desulfurization under a high operating temperature of 75 °C for five days.

Amino-Functionalized Water-Stable Metal–Organic Framework for Enhanced C2H2/CH4 Separation Performance

2020 ◽  
Vol 59 (5) ◽  
pp. 2631-2635 ◽  
Author(s):  
Qian Li ◽  
Nana Wu ◽  
Jia Li ◽  
Dapeng Wu ◽  
Yanshuo Li
Keyword(s):  
Metal Organic Framework ◽  
Separation Performance ◽  
Metal Organic ◽  
Organic Framework

scholarly journals Exploiting equilibrium-kinetic synergetic effect for separation of ethylene and ethane in a microporous metal-organic framework

2020 ◽  
Vol 6 (15) ◽  
pp. eaaz4322 ◽  
Author(s):  
Qi Ding ◽  
Zhaoqiang Zhang ◽  
Cong Yu ◽  
Peixin Zhang ◽  
Jun Wang ◽  
...  
Keyword(s):  
Performance Enhancement ◽  
Metal Organic Framework ◽  
Synergetic Effect ◽  
Adsorption Heat ◽  
Separation Performance ◽  
Separation Mechanism ◽  
Physiochemical Properties ◽  
Metal Organic ◽  
Breakthrough Experiments ◽  
Organic Framework

Physisorption is a promising technology to cut cost for separating ethylene (C2H4) from ethane (C2H6), the most energy-intensive separation process in the petrochemical industry. However, traditional thermodynamically selective adsorbents exhibit limited C2H4/C2H6 selectivity due to their similar physiochemical properties, and the performance enhancement is typically at the expense of elevated adsorption heat. Here, we report highly-efficient C2H4/C2H6 adsorption separation in a phosphate-anion pillared metal-organic framework ZnAtzPO4 exploiting the equilibrium-kinetic synergetic effect. The periodically expanded and contracted aperture decorated with electronegative groups within ZnAtzPO4 enables effective trapping of C2H4 and impedes the diffusion of C2H6, offering an extraordinary equilibrium-kinetic combined selectivity of 32.4. The adsorption heat of C2H4 on ZnAtzPO4 (17.3 to 30.0 kJ mol−1) is substantially lower than many thermodynamically selective adsorbents because its separation capability only partially relies on thermodynamics. The separation mechanism was explored by computational simulations, and breakthrough experiments confirmed the excellent C2H4/C2H6 separation performance of ZnAtzPO4.

A highly sensitive flexible metal–organic framework sets a new benchmark for separating propyne from propylene

2018 ◽  
Vol 6 (47) ◽  
pp. 24452-24458 ◽  
Author(s):  
Lifeng Yang ◽  
Xili Cui ◽  
Yuanbin Zhang ◽  
Qiwei Yang ◽  
Huabin Xing
Keyword(s):  
Metal Organic Framework ◽  
Separation Performance ◽  
Threshold Pressure ◽  
Flexible Material ◽  
Highly Sensitive ◽  
Metal Organic ◽  
Flexible Metal ◽  
Organic Framework

A highly sensitive flexible material TIFSIX-14-Cu-i with benchmark C3H4/C3H6 separation performance was designed through control of the threshold pressure.

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