Nanoporous ZIF-67 embedded polymers of intrinsic microporosity membranes with enhanced gas separation performance

Wu, Xingyu; Liu, Wei; Wu, Hong; Zong, Xue; Yang, Long; Wu, Yingzhen; Ren, Yanxiong; Shi, Chengyou; Wang, Shaofei; Jiang, Zhongyi

doi:10.1016/j.memsci.2017.11.038

Cited by 133 publications

(76 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…S1a Obtained values for pristine PIM-1 and MMMs are shown in Table 2. Pure PIM-1 membranes have a Young's modulus of 1.00 ± 0.21 GPa, a UTS of 41.7 ± 7.1 MPa and an elongation at break of 7.0 ± 1.7 %, which are in good agreement with values for pure PIM-1 freestanding membranes found in the literature [36][37][38].…”

Section: Resultssupporting

confidence: 87%

“…After the same test period of 155 days, MMMs presented higher CO 2 permeabilities ((2.0 ± 0.7) x 10 3 Barrer for pure PIM-1 vs (3.0 ± 0.2) x 10 3 , (2.4 ± 0.6) x 10 3 and (3.5 ± 0.6) x 10 3 Barrer for 0.05GO-ODA, 0.05rGO-ODA and 0.05rGO-OA membranes, respectively). This can also explain the lower CO 2 /CH 4 selectivity presented by the swelling the polymer matrix and thus resulting in increased CH 4 permeability[37]. CO 2 and CH 4 permeabilities of PIM-1 and MMMs with (a) (b) GO-ODA, (c) (d) rGO-ODA and (e) (f) rGO-OA incorporated into the polymer matrix.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Impeded physical aging in PIM-1 membranes containing graphene-like fillers

Alberto

Bhavsar

Luque-Alled

et al. 2018

Journal of Membrane Science

View full text Add to dashboard Cite

Physical aging of polymer of intrinsic microporosity PIM-1 is one of the major obstacles for its application as a commercial membrane material for gas separation. In this work, physical aging of PIM-1 and matrices of this same polymer containing graphene-like materials were studied.Graphene-like fillers resulted from the functionalization of graphene oxide (GO) with two alkyl chains of different lengths, using octylamine (OA) and octadecylamine (ODA), and further chemical reduction. Extents of membrane aging were evaluated through changes in gas permeability over time;the separation of gas mixtures comprising carbon dioxide and methane, which are of great interest for industrial applications such as the production of biogas or the purification of natural gas, was carried out. 50:50 vol. % CO 2 /CH 4 mixtures were used as feed and separation performance analysed for fresh membranes and at intervals of approximately a month up to 155 days. At the end of this testing period, aged PIM-1 membranes showed a CO 2 permeability of (2.0± 0.7) x 10 3 Barrer, which corresponds to a CO 2 permeability reduction of 68 % from the value obtained right after their fabrication. The addition of alkyl-functionalized GO is shown to be an efficient strategy to retard the physical aging of PIM-1 membranes; filler loadings as low as 0.05 wt.% of reduced octylfunctionalized GO showed a CO 2 permeability of (3.5 ± 0.6) x 10 3 Barrer after 5 months, which is almost three quarters higher than that of pure PIM-1 membrane aged for the same time period and represents a reduction of just 39% from its initial value. Moreover, the addition of graphene-like materials to PIM-1 does not affect its mechanical properties. Highlights Physical aging of mixed matrix membranes (MMMs) composed of PIM-1 and graphene-like materials was investigated. A binary CO 2 /CH 4 (50:50 vol.%) gas mixtures was used. Physical aging was reduced by the incorporation of reduced alkyl-functionalized graphene oxide nanosheets into PIM-1 matrices. Low filler loadings led to higher reduction in physical aging.

show abstract

Section: Resultssupporting

confidence: 87%

mentioning

confidence: 99%

Impeded physical aging in PIM-1 membranes containing graphene-like fillers

Alberto

Bhavsar

Luque-Alled

et al. 2018

Journal of Membrane Science

View full text Add to dashboard Cite

show abstract

“…linked by imidazole ligands, which have attracted extensive interest since the original report by Yaghi and co‐workers . High porosity originating from high crystallinity and regular topology structure makes ZIFs one of the best porous materials for the selective capture of CO 2 . The outstanding chemical and thermal stability of ZIFs are also favorable for its application under harsh conditions .…”

Section: Introductionmentioning

confidence: 99%

Space‐Confined Synthesis of ZIF‐67 Nanoparticles in Hollow Carbon Nanospheres for CO₂ Adsorption

Guo

Zhu

et al. 2019

Small

View full text Add to dashboard Cite

The synthesis of HCSs based core-shell structured nanocomposite can offer many benefits and potential applications. First, the remarkable durability stemming from the carbon framework would be highly beneficial for enduring harsh reaction conditions including acidic, alkaline, and organic regent. [4] Secondly, meso-/ micropores distributed on the surface of carbon shell can provide pathways for the diffusion of mass, which would reduce the diffusion resistance. [6] Last but not the least, the presence of huge inner space of HCSs with respect to the volume of carbon shell itself affords a huge reaction site. Therefore, it is important to experimentally and theoretically investigate the inner space of HCSs-based nanocomposites with controllable sizes for their optimum utilization.Zeolitic imidazole frameworks (ZIFs) with tetrahedral network topologies are a subclass of metal-organic frameworks (MOFs) composed of transition metals (Co, Cu, Zn, etc.) linked by imidazole ligands, which have attracted extensive interest since the original report by Yaghi and co-workers. [16,17] High porosity originating from high crystallinity and regular topology structure makes ZIFs one of the best porous materials for the selective capture of CO 2 . [18][19][20][21][22][23][24][25][26][27] The outstanding chemical and thermal stability of ZIFs are also favorable for its application under harsh conditions. [28][29][30][31][32][33][34][35] It is well established that the surface-to-volume ratio and total porosity of ZIFs are inversely related to its size, and have a significant influence on the adsorption capacity. [36,37] In this regard, reducing ZIFs to nanoscale size is favorable for increasing specific surface area and total porosity as well as enhancing uptake and selectivity.In this context, we report the synthesis of ZIF-67@HCSs material via a space-confined strategy, and its application for CO 2 capture. The as-synthesized ZIF-67@HCSs exhibited a unique core-shell structure composed of single microporous carbon shell and several nanoscale ZIF-67 cores. Due to the nanoconfined environment inside HCSs, these nanoreactors outperformed the conventional solution-based synthesis. [38] The results showed that:(1) the huge inner space of HCSs could be fully utilized without volume expansion, thus enhancing the tap density; (2) spaceconfined synthesis could control the size and morphology of ZIF-67 nanoparticles; (3) high chemical and thermal stability of ZIF-67 nanoparticles protected by hydrophobic carbon shell can avoid the moisture effects for real postcombustion gas separation, and therefore enhance the long-term stability. As expected, the ZIF-67@HCSs endowed with controlled morphology and high porosity exhibited outstanding adsorption capacity for CO 2 .Herein, the design and synthesis of ZIF-67 nanoparticles (NPs) with tunable size grown inside hollow carbon nanospheres (ZIF-67@HCSs) via a space-confined strategy is reported. HCSs are first prepared via pyrolysis of polystyrene@polypyrrole (PS@PPy) composite nanospheres. Furthe...

show abstract

“…In order to calculate the content of MOFs in composites, monolithic copolymer and composites were tested by TGA under air atmosphere, the residue of Cu‐BTC and ZIF‐67 were CuO and CoO/Co 3 O 4 after heated to 800°C . The amounts of MOFs nanoparticles present on copolymer were calculated from the three TGA curves (Figure S3).…”

Section: Resultsmentioning

confidence: 99%

Preparation of porous monoliths via CO₂‐in‐water HIPEs template and the in situ growth of metal organic frameworks on it for multiple applications

Yang

Dong

et al. 2020

Polymers for Advanced Techs

View full text Add to dashboard Cite

Monolithic porous copolymers with 3D structure were prepared via CO 2 -in-water high internal phase emulsions template by graft copolymerization of sodium methacrylate (MAANa) on to methyl cellulose (MC) backbone. The yielded copolymer monoliths are characterized by Fourier transform infrared spectra, scanning electron microscopy (SEM), and mechanical instrument, the swelling degree of MC-g-PMAANa monoliths with different crosslinker in diverse pH were investigated. The adsorption performance of monolith to Cu(II) were conducted to explore its adsorption capacity to heavy metal ions from the wastewater. Then, a strategy of in situ growth of metal-organic frameworks (MOFs) on MC-g-PMAANa that adsorbed with metal ions was proposed first.The X-ray powder diffraction, SEM, and Brunauer-Emmett-Teller (BET) surface area result of MC-g-PMAANa/MOFs composites indicated that the MOFs nanoparticles were grown uniformly on the monolith wall without destroying its original 3D porous structure. Compared with MOFs nanoparticle, MC-g-PMAANa/MOFs composites have advantages of easy operation and handle, which more conform to practical application. Furthermore, the antibacterial activity of MC-g-PMAANa/MOFs was evaluated by disk agar diffusion and optical density methods. In addition, MC-g-PMAANa/Cu-BTC composite was applied to dye adsorption, which has proved the underlying application of such composites in dye removal. K E Y W O R D Shigh internal phase emulsions, in situ growth, metal organic frameworks, sodium methacrylate

show abstract

Nanoporous ZIF-67 embedded polymers of intrinsic microporosity membranes with enhanced gas separation performance

Cited by 133 publications

References 65 publications

Impeded physical aging in PIM-1 membranes containing graphene-like fillers

Impeded physical aging in PIM-1 membranes containing graphene-like fillers

Space‐Confined Synthesis of ZIF‐67 Nanoparticles in Hollow Carbon Nanospheres for CO₂ Adsorption

Preparation of porous monoliths via CO₂‐in‐water HIPEs template and the in situ growth of metal organic frameworks on it for multiple applications

Contact Info

Product

Resources

About

Nanoporous ZIF-67 embedded polymers of intrinsic microporosity membranes with enhanced gas separation performance

Cited by 133 publications

References 65 publications

Impeded physical aging in PIM-1 membranes containing graphene-like fillers

Impeded physical aging in PIM-1 membranes containing graphene-like fillers

Space‐Confined Synthesis of ZIF‐67 Nanoparticles in Hollow Carbon Nanospheres for CO2 Adsorption

Preparation of porous monoliths via CO2‐in‐water HIPEs template and the in situ growth of metal organic frameworks on it for multiple applications

Contact Info

Product

Resources

About

Space‐Confined Synthesis of ZIF‐67 Nanoparticles in Hollow Carbon Nanospheres for CO₂ Adsorption

Preparation of porous monoliths via CO₂‐in‐water HIPEs template and the in situ growth of metal organic frameworks on it for multiple applications