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Mehrdad Asgari

Cette personne a quitté l’EPFL

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Publications associées (28)

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Synergistic material and process development: Application of a metal-organic framework, Cu-TDPAT, in single-cycle hydrogen purification and CO2 capture from synthesis gas

Wendy Lee Queen, Mehrdad Asgari

We employ a synergistic material and process development strategy to improve the performance of a single-cycle vacuum pressure swing adsorption (VPSA) process for the hydrogen purification and the CO2 separation from reforming-based hydrogen synthesis. Bas ...

ELSEVIER SCIENCE SA2021

A data-science approach to predict the heat capacity of nanoporous materials

Berend Smit, Mehrdad Asgari, Seyedmohamad Moosavi, Daniele Ongari, Andres Adolfo Ortega Guerrero, Elias Moubarak, Balázs Álmos Novotny, Özge Kadioglu

The heat capacity of a material is a fundamental property of great practical importance. For example, in a carbon capture process, the heat required to regenerate a solid sorbent is directly related to the heat capacity of the material. However, for most m ...

NATURE PORTFOLIO2022

Facile ultrasonic-assisted synthesis of SiO2/ZnO core/shell nanostructures: A selective ethanol sensor at low temperatures with enhanced recovery

Mehrdad Asgari

SiO2/ZnO core/shell and composite sensors with 22-97 wt% ZnO content were synthesized by a facile ultrasonicassisted deposition-precipitation method. As for the core, uniform silica spherical particles were synthesized by a microemulsion technique. The pre ...

ELSEVIER SCIENCE SA2022

A post-synthetic modification strategy for enhancing Pt adsorption efficiency in MOF/polymer composites

Emad Oveisi, Wendy Lee Queen, Mounir Driss Mensi, Mehrdad Asgari, Olga Trukhina, Vikram Vinayak Karve, Till Marian Schertenleib

Growing polymers inside porous metal-organic frameworks (MOFs) can allow incoming guests to access the backbone of otherwise non-porous polymers, boosting the number and/or strength of available adsorption sites inside the porous support. In the present wo ...

Royal Soc Chemistry2024

Characterization of metal organic frameworks of interest for gas adsorption/separation applications

Mehrdad Asgari

Metal-Organic Frameworks (MOFs) are a class of porous materials that are applicable in many energy and environmentally relevant areas, due to their unique features including unprecedented internal surface areas and easy chemical tunability. Gas separation ...

EPFL2020

Mechanistic Study on Thermally Induced Lattice Stiffening of ZIF-8

Kumar Varoon Agrawal, Wendy Lee Queen, Pascal Alexander Schouwink, Mehrdad Asgari, Qi Liu, Deepu Joseph Babu, Jian Hao

The flexibility of the ZIF-8 aperture, which inhibits a molecular cutoff of 3.4 angstrom, can be reduced by rapid heat treatment to obtain CO2-selective membranes. However, the early stages of the structural, morphological, and chemical changes responsible ...

2021

Toward Optimal Photocatalytic Hydrogen Generation from Water Using Pyrene-Based Metal-Organic Frameworks

Berend Smit, Mehrdad Asgari, Christopher Patrick Ireland, Andres Adolfo Ortega Guerrero, Fatma Pelin Uran, Özge Kadioglu

Metal-organic frameworks (MOFs) are promising materials for the photocatalytic H-2 evolution reaction (HER) from water. To find the optimal MOF for a photocatalytic HER, one has to consider many different factors. For example, studies have emphasized the i ...

AMER CHEMICAL SOC2021

Recent Advances in MOF-Based Adsorbents for Dye Removal from the Aquatic Environment

Mehrdad Asgari, Vikram Vinayak Karve

The adsorptive removal of dyes from industrial wastewater using commercially available adsorbents is not significantly efficient. Metal-organic frameworks (MOFs) offer outstanding properties which can boost the separation performance over current commercia ...

MDPI2022

Recent Progress in Adsorptive Removal of Water Pollutants by Metal-Organic Frameworks

Mehrdad Asgari

Difficulty in accessing drinkable water resources, mostly originating from water pollution, has become a serious challenge for humans and the environment. Increasing population, growth of industrial activities, and the increasing demand for the agricultura ...

WILEY-V C H VERLAG GMBH2022

Densification and shaping of pure Cu-BTC powders using a solid-state chemical transformation

Wendy Lee Queen, Mehrdad Asgari, Vikram Vinayak Karve, Mathieu Soutrenon, Jordi Espin Marti

MOFs are a class of porous crystalline materials whose unique properties have led to applicability in several fields ranging from gas adsorption to drug delivery. Despite their high potential, MOFs are usually found as fine powders, a property that can lim ...

Iop Publishing Ltd2024

Understanding How Ligand Functionalization Influences CO2 and N-2 Adsorption in a Sodalite Metal-Organic Framework

Michele Ceriotti, Wendy Lee Queen, Pascal Alexander Schouwink, Mehrdad Asgari, Olga Trukhina, Ilia Kochetygov, Rocio Semino Barbaresi

In this work, a detailed study is conducted to understand how ligand substitution influences the CO, and N-2 adsorption properties of two highly crystalline sodalite metal-organic frameworks (MOFs) known as Cu-BTT (BTT-3 = 1,3,5-benzenetristetrazolate) and ...

AMER CHEMICAL SOC2020

An In-Situ Neutron Diffraction and DFT Study of Hydrogen Adsorption in a Sodalite-Type Metal-Organic Framework, Cu-BTTri

Michele Ceriotti, Wendy Lee Queen, Pascal Alexander Schouwink, Mehrdad Asgari, Shuliang Yang, Olga Trukhina, Ilia Kochetygov, Safak Bulut, Rocio Semino Barbaresi

Herein we present a detailed study of the hydrogen adsorption properties of Cu‐BTTri, a robust crystalline metal–organic framework containing open metal‐coordination sites. Diffraction techniques, carried out on the activated framework, reveal a structure ...

2019

3D vs. turbostratic: controlling metal-organic framework dimensionality via N-heterocyclic carbene chemistry

Emad Oveisi, Wendy Lee Queen, Mounir Driss Mensi, Mehrdad Asgari, Shuliang Yang, Ilia Kochetygov, Vikram Vinayak Karve, Till Marian Schertenleib, Anita Justin

Using azolium-based ligands for the construction of metal-organic frameworks (MOFs) is a viable strategy to immobilize catalytically active N-heterocyclic carbenes (NHC) or NHC-derived species inside MOF pores. Thus, in the present work, a novel copper MOF ...

ROYAL SOC CHEMISTRY2022

Selective CO2 adsorption by a new metal-organic framework: synergy between open metal sites and a charged imidazolinium backbone

Wendy Lee Queen, Mehrdad Asgari, Safak Bulut, Ilia Kochetygov

2018

Recent Applications of Porous Organic Polymers Prepared via Friedel-Crafts Reaction under the Catalysis of AlCl3: A Review

Mehrdad Asgari, Nazanin Taheri

Since the development of porous materials, porous organic polymers (POPs) have received much attention due to advantages such as attractive architecture, large pore volume, high surface area, and immense porosity. Furthermore, their porous structure can be ...

AMER CHEMICAL SOC2022

A new post-synthetic polymerization strategy makes metal-organic frameworks more stable

Abbas Jamali, Emad Oveisi, Wendy Lee Queen, Mehrdad Asgari, Shuliang Yang, Daniel Teav Sun, Li Peng, Olga Trukhina, Safak Bulut

Metal-organic frameworks are of interest in a number of host-guest applications. However, their weak coordination bonding often leads to instability in aqueous environments, particularly at extreme pH, and hence, is a challenging topic in the field. In thi ...

2019

Understanding Your Support System: The Design of a Stable Metal-Organic Framework/Polyazoamine Support for Biomass Conversion

Jeremy Luterbacher, Wendy Lee Queen, Mehrdad Asgari, Shuliang Yang, Olga Trukhina, Ilia Kochetygov, Vikram Vinayak Karve

Introducing oligomeric or polymeric units into metal- organic frameworks (MOFs) can result in composites that have significantly improved properties when compared with the individual MOF or polymer building blocks. With such synergy in mind, this work pres ...

AMER CHEMICAL SOC2022

Proton Exchange Membrane Fuel Cells: Focused on Organic-Inorganic Nanocomposite Membranes

Mehrdad Asgari

The application of organic-inorganic nanocomposite membranes allows for a synergy between the desirable thermal and mechanical properties of inorganic materials with the reactivity, dielectric properties, durability, flexibility, and processability of the ...

BUDAPEST UNIV TECHNOLOGY ECONOMICS2023

MOF/polymer composite synthesized using a double solvent method offers enhanced water and CO2 adsorption properties

Wendy Lee Queen, Mehrdad Asgari, Shuliang Yang, Daniel Teav Sun, Li Peng

A double solvent method is for the first time used to synthesize a polymer composite that is constructed by a Ni-pyrazolate MOF and polydopamine (PDA). The resulting composite shows significantly enhanced water and CO2 adsorption properties compared to the ...

Royal Society of Chemistry2018

Efficient production of polymer-grade propylene from the propane/ propylene binary mixture using Cu-MOF-74 framework

Mehrdad Asgari

We employ the Cu-MOF-74 framework for the separation of a propane/propylene mixed stream. Performing single and binary component breakthrough experiments demonstrates that this framework has a greater capacity and affinity for propylene relative to propane ...

ELSEVIER2021