ZIF-8 nanoparticles with tunable size for enhanced CO2 capture of Pebax based MMMs

Zheng, Wenji; Ding, Rui; Yang, Kai; Dai, Yan; Yan, Xiaoming; He, Gaohong

doi:10.1016/j.seppur.2018.04.010

Cited by 115 publications

(57 citation statements)

References 56 publications

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“…Figure shows the XRD patterns of ZIF‐8 and ZnO‐ T carriers ( T = 400, 500, and 600 and T stands the calcination temperature of ZIF‐8). As shown in Figure a, all peaks of synthesized ZIF‐8 are consistent with the simulated ZIF‐8 (CCDC: 823083) and the reported results, suggesting that highly crystalline ZIF‐8 was obtained. After calcined above 400 °C, all characteristic peaks of ZIF‐8 disappeared and several diffraction peaks corresponding to (100), (002), (101), (102), (110), (103), and (112) of ZnO (JCPDS 04‐0784) appeared in Figure b, which indicates the transformation of ZnO from ZIF‐8.…”

Section: Resultssupporting

confidence: 86%

Carbon‐Modified CuO/ZnO Catalyst with High Oxygen Vacancy for CO₂ Hydrogenation to Methanol

Wei

Gao

et al. 2020

Energy Tech

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CO2 hydrogenation to methanol is a prospective approach to alleviate both global warming and energy problems. CuO/ZnO is proven to be an efficient catalyst, in which ZnO carriers prepared by different methods directly affect the catalytic activity. Herein, a novel method is used to apply a zeolite imidazolate framework‐8 (ZIF‐8)‐derived ZnO to the carrier of copper‐based catalyst. In the process of thermal transformation from ZIF‐8 to ZnO, the carrier ZnO‐400 is specially modified by carbon inherited from ZIF‐8, and the corresponding CuO/ZnO‐400 catalyst still has special carbon modification, which is confirmed by transmission electron microscopy (TEM), X‐ray photoelectron spectroscopy (XPS), and Raman spectroscopy. Meanwhile, the pyrolysis temperature of ZIF‐8 affects the surface oxygen defects of ZnO and the CuO/ZnO‐400 catalyst has a large oxygen vacancy concentration, which is proven by X‐ray diffraction (XRD) and XPS. Consequently, the CuO/ZnO‐400 catalyst achieves the best CO2 conversion and methanol selectivity due to more oxygen vacancies and carbon modification.

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Section: Resultssupporting

confidence: 86%

Carbon‐Modified CuO/ZnO Catalyst with High Oxygen Vacancy for CO₂ Hydrogenation to Methanol

Wei

Gao

et al. 2020

Energy Tech

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“…1). [32][33][34] The Pebax/ZIF-L-X and Pebax/hZIF-L-X membranes were prepared with different loadings (1, 3, 5, 7 and 9 wt%) of ZIF-L akes and hZIF-L akes, respectively. First, a specic amount of ller was dispersed using sonication into a small amount of ethyl alcohol solution to obtain a uniform suspension.…”

Section: Membrane Fabricationmentioning

confidence: 99%

Introducing hydrophilic ultra-thin ZIF-L into mixed matrix membranes for CO₂/CH₄ separation

et al. 2019

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“…Another concept to simultaneously improve the permeability and selectivity of the CO 2 separation membranes is that of mixed matrix membranes (MMMs) [21,22]. Sabetghadam et al [23] fabricated thin MMMs based on nanosheets of the Cu-BDC and PolyActive™ polymer, improving the CO 2 /N 2 selectivity of the thin membranes up to 77 and the CO 2 permeance to 40 GPU (1 GPU = 1.0 × 10 −6 cm 3 (STP) cm −2 s −1 cmHg −1 ).…”

Section: Introductionmentioning

confidence: 99%

Tailoring the Thermal and Mechanical Properties of PolyActiveTM Poly(Ether-Ester) Multiblock Copolymers Via Blending with CO2-Phylic Ionic Liquid

et al. 2020

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The last decade has seen an exponential increase in the number of studies focused on novel applications for ionic liquids (ILs). Blends of polymers with ILs have been proposed for use in fuel cells, batteries, gas separation membranes, packaging, etc., each requiring a set of specific physico-chemical properties. In this work, blends of four grades of the poly(ether-ester) multiblock copolymer PolyActive™ with different concentrations of the CO2-philic 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [BMIM][Tf2N] were prepared in the form of dense films by a solution casting and solvent evaporation method, in view of their potential use as gas separation membranes for CO2 capture. Depending on the polymer structure, the material properties could be tailored over a wide range by means of the IL content. All samples were dry-feeling, highly elastic self-standing dense films. The microstructure of the blends was studied by scanning electron microscopy with a backscattering detector, able to observe anisotropy in the sample, while a special topographic analysis mode allowed the visualization of surface roughness. Samples with the longest poly(ethylene oxide terephthalate) (PEOT) blocks were significantly more anisotropic than those with shorter blocks, and this heterogeneity increased with increasing IL content. DSC analysis revealed a significant decrease in the melting enthalpy and melting temperature of the crystalline PEOT domains with increasing IL content, forming an amorphous phase with Tg ≈ −50 °C, whereas the polybutylene terephthalate (PBT) phase was hardly affected. This indicates better compatibility of the IL with the polyether phase than the polyester phase. Young’s modulus was highest and most IL-dependent for the sample with the highest PEOT content and PEOT block length, due to its high crystallinity. Similarly, the sample with short PEOT blocks and high PBT content also showed a high modulus and tensile strength, but much lower maximum elongation. This study provides a detailed discussion on the correlation between the morphological, thermal, and mechanical properties of these PolyActive™/[BMIM][Tf2N] blends.

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ZIF-8 nanoparticles with tunable size for enhanced CO2 capture of Pebax based MMMs

Cited by 115 publications

References 56 publications

Carbon‐Modified CuO/ZnO Catalyst with High Oxygen Vacancy for CO₂ Hydrogenation to Methanol

Carbon‐Modified CuO/ZnO Catalyst with High Oxygen Vacancy for CO₂ Hydrogenation to Methanol

Introducing hydrophilic ultra-thin ZIF-L into mixed matrix membranes for CO₂/CH₄ separation

Tailoring the Thermal and Mechanical Properties of PolyActiveTM Poly(Ether-Ester) Multiblock Copolymers Via Blending with CO2-Phylic Ionic Liquid

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ZIF-8 nanoparticles with tunable size for enhanced CO2 capture of Pebax based MMMs

Cited by 115 publications

References 56 publications

Carbon‐Modified CuO/ZnO Catalyst with High Oxygen Vacancy for CO2 Hydrogenation to Methanol

Carbon‐Modified CuO/ZnO Catalyst with High Oxygen Vacancy for CO2 Hydrogenation to Methanol

Introducing hydrophilic ultra-thin ZIF-L into mixed matrix membranes for CO2/CH4 separation

Tailoring the Thermal and Mechanical Properties of PolyActiveTM Poly(Ether-Ester) Multiblock Copolymers Via Blending with CO2-Phylic Ionic Liquid

Contact Info

Product

Resources

About

Carbon‐Modified CuO/ZnO Catalyst with High Oxygen Vacancy for CO₂ Hydrogenation to Methanol

Carbon‐Modified CuO/ZnO Catalyst with High Oxygen Vacancy for CO₂ Hydrogenation to Methanol

Introducing hydrophilic ultra-thin ZIF-L into mixed matrix membranes for CO₂/CH₄ separation