The importance of nanomaterials in gas separation

Öztürk, Bahtiyar; Özen, Hülya Aykaç

doi:10.1016/j.matpr.2020.01.357

Cited by 4 publications

(1 citation statement)

References 24 publications

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“…MMMs containing a polymer membrane with dispersed inorganic fillers combine the distinctive properties of both the polymer and inorganic materials, i.e., the polymer's processibility with the molecular sieving effect of the fillers, which thus exhibit higher permeability along with the selectivity of organic-inorganic mixed phases [11,12]. In this context, membrane researchers focus on synthesizing or modifying advanced polymers to elevate both the gas selectivity and permeability of polymeric membranes by incorporating porous/nonporous micro-or nanosized fillers into the polymer matrix [13]. The addition of such porous/nonporous fillers into the polymer matrix combines the processability of polymeric membranes with good gas separation performance of inorganic membranes, synergistically contributing to the enhancement in membrane separation performance, thus minimizing the trade-off limit of pristine polymeric membranes [14].…”

Section: Introductionmentioning

confidence: 99%

CO2/CH4 and H2/CH4 Gas Separation Performance of CTA-TNT@CNT Hybrid Mixed Matrix Membranes

et al. 2021

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This study explored the underlying synergy between titanium dioxide nanotube (TNT) and carbon nanotube (CNT) hybrid fillers in cellulose triacetate (CTA)-based mixed matrix membranes (MMMs) for natural gas purification. The CNT@TNT hybrid nanofillers were blended with CTA polymer and cast as a thin film by a facile casting technique, after which they were used for single gas separation. The hybrid filler-based membrane depicted a higher CO2 uptake affinity than the single filler (CNT/TNT)-based membrane. The gas separation results indicate that the hybrid fillers (TNT@CNT) are strongly selective for CO2 over CH4 and H2 over CH4. The increment in the CO2/CH4 and H2/CH4 selectivities compared to the pristine CTA membrane was 42.98 from 25.08 and 48.43 from 36.58, respectively. Similarly, the CO2 and H2 permeability of the CTA-TNT@CNT membrane increased by six- and five-fold, respectively, compared to the pristine CTA membrane. Such significant improvements in CO2/CH4 and H2/CH4 separation performance and thermal and mechanical properties suggest a feasible and practical approach for potential biogas upgrading and natural gas purification.

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Section: Introductionmentioning

confidence: 99%

CO2/CH4 and H2/CH4 Gas Separation Performance of CTA-TNT@CNT Hybrid Mixed Matrix Membranes

et al. 2021

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2D‐Materials Mixed‐Matrix Membranes

Zhu¹,

Wang²,

Pan³

et al. 2022

Two‐Dimensional‐Materials‐Based Membranes

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Building a Beyond Concentrated Electrolyte for High‐Voltage Anode‐Free Rechargeable Sodium Batteries

Yang

et al. 2022

Angewandte Chemie

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Low-cost and scalable sodium ion (Na-ion) batteries serve as an ideal alternative to the current lithium-ion batteries. To compensate for the shortage of energy density, the most accessible solution is developing a high-voltage anode-free configuration comprising a lightweight Al current collector on the anode and a high-voltage sodiumized cathode. However, it imposes stringent Na reversibility and high-voltage stability requirements on the electrolyte. A 3A zeolite molecular sieve film is rationally designed, and a highly aggregated solvation structure is constructed through the size effect. It suppresses the trace but continuous oxidative decomposition and extends the oxidative stability to 4.5 V without sacrificing the Na reversibility of the anode (99.91 %). Thus, we can make anode-free cells with high energy density of 369 and 372 W h kg À 1 for 4.0 and 4.25 V class cells, respectively. Furthermore, this strategy enables a long lifespan (250 cycles) for 4.0 V-class anode-free cells.

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The importance of nanomaterials in gas separation

Cited by 4 publications

References 24 publications

CO2/CH4 and H2/CH4 Gas Separation Performance of CTA-TNT@CNT Hybrid Mixed Matrix Membranes

CO2/CH4 and H2/CH4 Gas Separation Performance of CTA-TNT@CNT Hybrid Mixed Matrix Membranes

2D‐Materials Mixed‐Matrix Membranes

Building a Beyond Concentrated Electrolyte for High‐Voltage Anode‐Free Rechargeable Sodium Batteries

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