Çiğdem Altıntaş

ORCID: 0000-0003-2160-4674
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About
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Research Areas
  • Metal-Organic Frameworks: Synthesis and Applications
  • Membrane Separation and Gas Transport
  • Covalent Organic Framework Applications
  • Carbon Dioxide Capture Technologies
  • X-ray Diffraction in Crystallography
  • Crystallization and Solubility Studies
  • Zeolite Catalysis and Synthesis
  • Inorganic Fluorides and Related Compounds
  • Machine Learning in Materials Science
  • Catalytic Processes in Materials Science
  • Advanced Photocatalysis Techniques
  • Industrial Gas Emission Control
  • Ionic liquids properties and applications
  • Carbon dioxide utilization in catalysis
  • Hydrogen Storage and Materials
  • Phase Equilibria and Thermodynamics
  • Gas Sensing Nanomaterials and Sensors
  • Chemical Synthesis and Analysis
  • Catalysis for Biomass Conversion
  • Advanced Battery Technologies Research
  • Membrane-based Ion Separation Techniques
  • Asymmetric Hydrogenation and Catalysis

Koç University
2015-2023

Orient-Institut Istanbul
2017-2020

Development of computation-ready metal-organic framework databases (MOF DBs) has accelerated high-throughput computational screening (HTCS) materials to identify the best candidates for gas storage and separation. These DBs were constructed using structural curations make MOFs directly usable molecular simulations, which caused same MOF be reported with different features in DBs. We examined thousands common two recently updated, very widely used reveal how discrepancies affect simulated CH4...

10.1002/anie.202015250 article EN Angewandte Chemie International Edition 2021-01-15

Separating CH4/N2 mixture is challenging, and performance of the existing materials still open to improvement. In this study, we examined both adsorption- membrane-based separation performances 5034 different materials, including metal organic frameworks (MOFs), covalent (COFs), ionic liquid (IL)/MOF composites, MOF/polymer COF/polymer composites by performing high-throughput computational screening molecular simulations. The top adsorbents membranes were identified computing several...

10.1016/j.cej.2021.131239 article EN cc-by-nc-nd Chemical Engineering Journal 2021-07-12

Experiments were combined with atomically detailed simulations and density functional theory (DFT) calculations to understand the effect of incorporation an ionic liquid (IL), 1-n-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]), into a metal organic framework (MOF zeolitic imidazolate framework), ZIF-8, on CO2 separation performance. The interactions between [BMIM][PF6] ZIF-8 examined in deep detail, their consequences CO2/CH4, CO2/N2, CH4/N2 have been elucidated by using...

10.1021/acsami.6b11087 article EN ACS Applied Materials & Interfaces 2016-10-26

Metal–organic frameworks (MOFs) are potential adsorbents for CO2 capture. Because thousands of MOFs exist, computational studies become very useful in identifying the top performing materials target applications a time-effective manner. In this study, molecular simulations were performed to screen MOF database identify best separation from flue gas (CO2/N2) and landfill (CO2/CH4) under realistic operating conditions. We validated accuracy our approach by comparing simulation results uptakes,...

10.1021/acsami.8b04600 article EN publisher-specific-oa ACS Applied Materials & Interfaces 2018-05-03

Metal organic frameworks (MOFs) have been considered as one of the most exciting porous materials discovered in last decade. Large surface areas, high pore volumes, and tailorable sizes make MOFs highly promising a variety applications, mainly gas separations. The number has increasing very rapidly, experimental identification exhibiting separation potential is simply impractical. High-throughput computational screening studies which thousands are evaluated to identify best candidates for...

10.1021/acsami.7b18037 article EN publisher-specific-oa ACS Applied Materials & Interfaces 2018-01-09

Gas separation performance of the zeolitic imidazolate framework (ZIF-8) was improved by incorporating an ionic liquid (IL), 1-n-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4]). Detailed characterization based on X-ray diffraction (XRD) and scanning electron microscopy (SEM) confirmed that morphology ZIF-8 remains intact upon IL incorporation up to 28 wt %. Thermogravimetric analysis indicated presence direct interactions between metal organic (MOF). FTIR spectroscopy illustrated...

10.1021/acs.jpcc.7b00848 article EN The Journal of Physical Chemistry C 2017-04-17

An extensive comparative analysis of two computation-ready MOF databases was provided to study adsorption and separation CH<sub>4</sub> H<sub>2</sub>.

10.1039/c9ta01378d article EN cc-by-nc Journal of Materials Chemistry A 2019-01-01

Adsorption and membrane-based gas separation performances of 295 COFs are evaluated for CO<sub>2</sub>/N<sub>2</sub> using high-throughput computational screening.

10.1039/d0ta04574h article EN cc-by Journal of Materials Chemistry A 2020-01-01

Efficient separation of CO2 from CO2/CH4 mixtures using membranes has economic, environmental and industrial importance. Membrane technologies are currently dominated by polymers due to their processing abilities low manufacturing costs. However, polymeric suffer either gas permeabilities or selectivities. Metal organic frameworks (MOFs) suggested as potential membrane candidates that offer both high selectivity permeability for separation. Experimental testing every single synthesized MOF...

10.1021/acssuschemeng.8b05832 article EN publisher-specific-oa ACS Sustainable Chemistry & Engineering 2018-12-18

Hundreds of covalent organic frameworks (COFs) have been synthesized, and thousands them computationally designed. However, it is impractical to experimentally test each material as a membrane for gas separations. In this work, we focused on the membrane-based separation performances synthesized COFs hypothetical (hypoCOFs). Gas permeabilities were computed by combining results grand canonical Monte Carlo (GCMC) molecular dynamics (MD) simulations, many COF membranes found overcome upper...

10.1021/acsami.2c04016 article EN cc-by ACS Applied Materials & Interfaces 2022-04-28

Hydrogen (H2) is a promising energy carrier for achieving net zero carbon emissions. Metal organic frameworks (MOFs) and covalent (COFs) have emerged as strong alternatives to traditional porous materials highly efficient H2 storage purification applications. With the very rapid continuous increase in number variety of MOFs COFs, early studies this field focused on experimental testing few types randomly selected recently evolved into combining computational screening large material...

10.1016/j.mtener.2023.101426 article EN cc-by-nc-nd Materials Today Energy 2023-09-23

Design of new membranes having high H2/CH4 selectivity and H2 permeability is strongly desired to reduce the energy demand for production. Metal organic frameworks (MOFs) offer a great promise membrane-based gas separations due their tunable physical chemical properties. We performed high-throughput computational screening study examine separation potentials 4240 MOFs. Grand canonical Monte Carlo (GCMC) molecular dynamics (MD) simulations were used compute adsorption diffusion CH4 in...

10.1039/c8ta01547c article EN cc-by-nc Journal of Materials Chemistry A 2018-01-01

Covalent organic frameworks (COFs) have high potential in gas separation technologies because of their porous structures, large surface areas, and good stabilities. The number synthesized COFs already reached several hundreds, but only a handful materials were tested as adsorbents and/or membranes. We used high-throughput computational screening approach to uncover adsorption-based membrane-based CO2/H2 potentials 288 COFs, representing the highest experimentally studied date for...

10.1021/acs.jpcc.0c07062 article EN cc-by-nc-nd The Journal of Physical Chemistry C 2020-09-18

Metal–organic frameworks (MOFs) have received great attention in recent years as potential adsorbents for CO2 capture due to their unique properties. However, the high cost and tedious synthesis procedures impede industrial application. A series of new CO2-philic oxalamide-functionalized MOFs been solvothermally synthesized: {[Zn3(μ8-OATA)1.5(H2O)2(DMF)]·5/2H2O·5DMF}n (Zn-OATA), {[NH2(CH3)2][Cd(μ4-HOATA)]·H2O·DMF}n (Cd-OATA), {[Co2(μ7-OATA)(H2O)(DMF)2]·2H2O·3DMF}n (Co-OATA) (H4OATA =...

10.1021/acsami.1c11330 article EN ACS Applied Materials & Interfaces 2021-07-12

Mixed matrix membranes (MMMs) composed of two different fillers such as metal-organic frameworks (MOFs) and covalent-organic (COFs) embedded into polymers provide enhanced gas separation performance. Since it is not possible to experimentally consider all combinations MOFs, COFs, polymers, developing computational methods urgent identify the best performing MOF-COF pairs be used dual in polymer for target separations. With this motivation, we combined molecular simulations adsorption...

10.1021/acs.iecr.2c04500 article EN cc-by Industrial & Engineering Chemistry Research 2023-01-26

The role of partial charge assignment methods used in high-throughput computational screening metal organic frameworks (MOFs) for CO<sub>2</sub>/CH<sub>4</sub> separation is examined.

10.1039/c9me00163h article EN cc-by-nc Molecular Systems Design & Engineering 2020-01-01

Covalent organic frameworks (COFs) have emerged as novel adsorbents and membranes for gas separation. Incorporation of ionic liquids (ILs) into COFs is important to exceed the current performance limits COFs. However, synthesis testing a nearly unlimited number IL/COF combinations are simply impractical. Herein, we used multi-scale computational screening approach combining COnductor-like Screening MOdel Realistic Solvents (COSMO-RS) method, Grand Canonical Monte Carlo (GCMC), molecular...

10.1016/j.seppur.2022.120578 article EN cc-by-nc-nd Separation and Purification Technology 2022-01-29

Abstract Development of computation‐ready metal–organic framework databases (MOF DBs) has accelerated high‐throughput computational screening (HTCS) materials to identify the best candidates for gas storage and separation. These DBs were constructed using structural curations make MOFs directly usable molecular simulations, which caused same MOF be reported with different features in DBs. We examined thousands common two recently updated, very widely used reveal how discrepancies affect...

10.1002/ange.202015250 article EN Angewandte Chemie 2021-01-15

Adsorbent performance evaluation metrics such as selectivity and regenerability that can be computed from the results of molecular simulations are widely used to identify most promising metal organic frameworks (MOF) for separation CO2/N2 mixture. Parasitic energy is recently offered rank MOFs comparing cost-effectiveness an adsorption-based process. In this work, we performed Grand Canonical Monte Carlo 1661 compute mixture adsorption data then calculated selectivity, working capacity,...

10.1016/j.cherd.2022.01.030 article EN cc-by-nc-nd Process Safety and Environmental Protection 2022-01-25

Molecular simulations were used to assess the membrane-based C<sub>2</sub>H<sub>6</sub>/C<sub>2</sub>H<sub>4</sub> and C<sub>2</sub>H<sub>6</sub>/CH<sub>4</sub> separation performances of 175 different MOF structures.

10.1039/c7ra11562h article EN cc-by-nc RSC Advances 2017-01-01

The design and discovery of novel porous materials that can efficiently capture volatile organic compounds (VOCs) from air are critical to address one the most important challenges our world, pollution. In this work, we studied a recently introduced metal-organic framework (MOF) database, namely, quantum MOF (QMOF) unlock potential both experimentally synthesized hypothetically generated structures for adsorption-based n-butane (C4H10) air. Configurational Bias Monte Carlo (CBMC) simulations...

10.1021/acsengineeringau.3c00039 article EN cc-by-nc-nd ACS Engineering Au 2023-10-07
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