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Publications associées (83)

Structural Sensitivities in Bimetallic Catalysts for Electrochemical CO2 Reduction Revealed by Ag-Cu Nanodimers

Raffaella Buonsanti, Emad Oveisi, Mounir Driss Mensi, Valeria Mantella, Jianfeng Huang

Understanding the structural and compositional sensitivities of the electrochemical CO2 reduction reaction (CO2RR) is fundamentally important for developing highly efficient and selective electrocatalysts. Here, we use Ag/Cu nanocrystals to uncover the key ...

2019

Interfacial Effect between Aluminum-Based Complex Hydrides and Nickel-Containing Porous Carbon Sheets

Andreas Züttel, Emad Oveisi, Loris Giovanni Lombardo, Heena Yang, Mo Li, Youngdon Ko

Supported aluminum-based complex hydrides (alanates) were investigated in view of their interaction at the interface. Nickel-containing porous carbon sheets (Ni-PCSs) were combined with various alanates, resulting in a decrease of the decomposition tempera ...

AMER CHEMICAL SOC2020

Tailoring Morphology and Elemental Distribution of Cu-In Nanocrystals via Galvanic Replacement

Raffaella Buonsanti, Emad Oveisi, Pascal Alexander Schouwink, Laia Castilla Amorós, Valery Okatenko

The compositional and structural diversity of bimetallic nanocrystals (NCs) provides a superior tunability of their physico-chemical properties, making them attractive for a variety of applications, including sensing and catalysis. Nevertheless, the manipu ...

AMER CHEMICAL SOC2022

Large-scale synthesis of crystalline g-C3N4 nanosheets and high-temperature H-2 sieving from assembled films

Nicola Marzari, Emad Oveisi, Kumar Varoon Agrawal, Mounir Driss Mensi, Davide Campi, Luis Francisco Villalobos Vazquez de la Parra

Poly(triazine imide) (PTI), a crystalline g-C3N4, hosting two-dimensional nanoporous structure with an electron density gap of 0.34 nm, is highly promising for high-temperature hydrogen sieving because of its high chemical and thermal robustness. Currently ...

AMER ASSOC ADVANCEMENT SCIENCE2020

Structure-Property Relationships of Microphase-Separated Metallosupramolecular Polymers

Emad Oveisi, Stephen Schrettl

The structural, thermomechanical, and viscoelastic properties of metallosupramolecular polymers (MSPs) can be controlled through the choice of the multiligand monomer and the nature of the metal salt from which these materials are assembled. This versatili ...

American Chemical Society2020

Oxidative Print Light Synthesis Thin Film Deposition of Prussian Blue

Hubert Girault, Emad Oveisi, Mounir Driss Mensi, Victor Costa Bassetto, Wanderson Oliveira Da Silva, Dominika Baster

Prussian blue (PB) and Prussian blue analogues (PBAs) are commonly synthesized by conventional methods, such as chemical precipitation, thermal decomposition, and electrochemical deposition. Herein, we have successfully synthesized Prussian blue by oxidati ...

2020

Imaging Catalysis: Operando Investigation of the CO2 Hydrogenation Reaction Dynamics by Means of Infrared Thermography

Andreas Züttel, Emad Oveisi, Kun Zhao, Loris Giovanni Lombardo, Robin Tobias Andreas Mutschler, Emanuele Moioli

Infrared thermography is a powerful tool to investigate the dynamic evolution of temperature in chemical reactions. The CO2 hydrogenation reaction is an ideal model reaction to assess the presented technique due to its high exothermicity. Various dynamic e ...

AMER CHEMICAL SOC2020

N-Containing Carbons Derived from Microporous Coordination Polymers for Use in Post-Combustion Flue Gas Capture

Emad Oveisi, Wendy Lee Queen, Vikram Vinayak Karve, Jordi Espin Marti

Herein, novel carbons that, owing to a high density of micropores (up to 79%) and N-content (up to 14.9%), offering exciting potential for post-combustion CO2 capture are reported. Given that little is known about how starting materials impact the structur ...

WILEY-V C H VERLAG GMBH2023

Synthesis of Cu/CeO2-x Nanocrystalline Heterodimers with Interfacial Active Sites To Promote CO2 Electroreduction

Raffaella Buonsanti, Emad Oveisi, Mounir Driss Mensi, Jan Vávra, Chethana Janardhana Gadiyar, Michal Stanislaw Strach, Seyedehbehnaz Varandili, Jianfeng Huang, Gian Luca De Gregorio

Synergistic effects at metal/metal oxide interfaces often give rise to highly active and selective catalytic motifs. So far, such interactions have been rarely explored to enhance the selectivity in the electrochemical CO2 reduction reaction (CO2RR). Herei ...

2019

Metal Doping of Strongly Confined Halide Perovskite Nanocrystals under Ambient Conditions

Emad Oveisi, Aurélien Bornet, Pascal Alexander Schouwink, Sascha Feldmann, Tejas Deshpande, Zachary Andrew Vanorman

Halide perovskite nanocrystals are promising materials for optoelectronic applications. Metal doping provides an avenue to boost their performance further, e.g., by enhancing light emission, or to provide additional functionalities, such as nanoscale magne ...

American Chemical Society (ACS)2025

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

Anisotropic node distortions in amorphous MOFs: Low-valent Zr sites as catalytic hotspots

Berend Smit, Emad Oveisi, Kumar Varoon Agrawal, Wendy Lee Queen, Andres Adolfo Ortega Guerrero, Vikram Vinayak Karve, Till Marian Schertenleib, Jian Hao, Timo Markus Oskar Felder, Beatriz Bueno Mouriño

We introduce a new approach to defect engineering in Zr-based metal-organic frameworks (Zr-MOFs), aiming to reduce Zr site valency while preserving high node connectivity. Using a rapid heat treatment (RHT) in humid air, oxygen vacancies (O-vacancies) were ...

Elsevier BV2025

Post-test Analysis on a Solid Oxide Cell Stack Operated for 10,700 Hours in Steam Electrolysis Mode

Jan Van Herle, Emad Oveisi, Stefan Diethelm, Pierre Burdet, Giorgio Rinaldi

A solid oxide short stack composed of 6 Ni-YSZ supported cells, YSZ electrolyte and GDC-LSC oxygen electrode has been tested for 10,700 hours in steam electrolysis. Initial degradation was followed by a global stabilization of the performance after lowerin ...

2017

Low-temperature non-equilibrium synthesis of anisotropic multimetallic nanosurface alloys for electrochemical CO2 reduction

Andreas Züttel, Emad Oveisi, Mo Li, Jie Zhang, Cedric David Koolen

Multimetallic nanoparticles are of interest as functional materials due to their highly tunable properties. However, synthesizing congruent mixtures of immiscible components is limited by the need for high-temperature procedures followed by rapid quenching ...

Springernature2023

Rapid inkjet printing of high catalytic activity Co3O4 /N-rGO layers for oxygen reduction reaction

Hubert Girault, Emad Oveisi, Andreas Stephan Lesch, Véronique Amstutz, Victor Costa Bassetto

The accurate and reproducible large-scale production of catalyst layers containing low-cost, abundant electrocatalysts gains in importance. Herein, pivotal factors are discussed that need to be considered when a combined inkjet printing and photonic curing ...

2018

Catalytic hydrogen combustion over supported metal catalysts; comparison and kinetic study

Andreas Züttel, Emad Oveisi, Mounir Driss Mensi, Cedric David Koolen, Zohreh Akbari

Catalytic H2 combustion (CHC) is an efficient way to mitigate H2 slip from industrial processes, overcoming the explosion and NOx emission risks. Although Pt-based catalysts are state-of-the-art catalysts, little is known about the CHC catalytic activity o ...

2024

3D reconstruction of curvilinear structures with stereo matching deep convolutional neural networks

Pascal Fua, Cécile Hébert, Emad Oveisi, Anastasiia Mishchuk, Okan Altingövde, Gulnaz Ganeeva

Curvilinear structures frequently appear in microscopy imaging as the object of interest. Crystallographic defects, i.e dislocations, are one of the curvilinear structures that have been repeatedly investigated under transmission electron microscopy (TEM) ...

ELSEVIER2022

Prussian Blue Analogue-Sodium-Vanadium Hexacyanoferrate as a Cathode Material for Na-Ion Batteries

Hubert Girault, Emad Oveisi, Dominika Baster

Sodium-ion (Na-ion) batteries have been attracting great interest because of a wide range of potential applications and sodium abundance. Yet, the performance of Na-ion electrode materials needs improvement to be able to compete with lithium-ion electrode ...

AMER CHEMICAL SOC2021

Functional carbon nanosheets prepared from hexayne amphiphile monolayers at room temperature

Anna Fontcuberta i Morral, Anne-Clémence Corminboeuf, Emad Oveisi, Holger Frauenrath, Javier Reguera Gomez, Stephen Schrettl, Riccardo Petraglia, Yannik Fontana, Guillaume Pasche

Carbon nanostructures that feature two-dimensional extended nanosheets are important components for technological applications such as high-performance composites, lithium-ion storage, photovoltaics and nanoelectronics. Chemical functionalization would ren ...

Nature Publishing Group2014

Inkjet-Printed TiO2/Fullerene Composite Films for Planar Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Emad Oveisi, Hiroyuki Kanda, Aron Joel Huckaba, Inés Garcia Benito

Perovskite solar cells have garnered and held international research interest, due to ever-climbing power conversion efficiency values, now >25 %. Some high efficiency configurations utilize a compact TiO2 layer underneath a mesoporous TiO2 layer, both of ...

WILEY-V C H VERLAG GMBH2020