Mounir Driss Mensi

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Enhanced Water Evaporation from A-Scale Graphene Nanopores

Kumar Varoon Agrawal, Mounir Driss Mensi, Kuang-Jung Hsu, Luis Francisco Villalobos Vazquez de la Parra, Mostapha Dakhchoune, Shiqi Huang, Wan-Chi Lee

Enhancing the kinetics of liquid-vapor transition from nanoscale confinements is an attractive strategy for developing evaporation and separation applications. The ultimate limit of confinement for evaporation is an atom thick interface hosting angstrom-sc ...

AMER CHEMICAL SOC2022

Mechanistic classification and benchmarking of polyolefin depolymerization over silica-alumina-based catalysts

Paul Joseph Dyson, Mounir Driss Mensi, Felix Daniel Bobbink, Antoine Philippe Van Muyden, Wei-Tse Lee, Jed Russell Carullo

Carbon-carbon bond cleavage mechanisms play a key role in the selective deconstruction of alkanes and polyolefins. Here, we show that the product distribution, which encompasses carbon range and formation of unsaturated and isomerization products, serves a ...

Nature Research2022

An Organic Semiconductor Photoelectrochemical Tandem Cell for Solar Water Splitting

Kevin Sivula, Jun Ho Yum, Mounir Driss Mensi, Han-Hee Cho, Dan Zhang

Photoelectrochemical cells employing organic semiconductors (OS) are promising for solar-to-fuel conversion via water splitting. However, despite encouraging advances with the half reactions, complete overall water splitting remains a challenge. Herein, a ...

WILEY-V C H VERLAG GMBH2022

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

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

Restructuring Ni/Al2O3 by addition of Ga to shift product selectivity in CO2 hydrogenation: The role of hydroxyl groups

Jeremy Luterbacher, Oliver Kröcher, Mounir Driss Mensi, Alimohammad Bahmanpour

Ni/Al2O3 is an active catalysts for CO2 hydrogenation to both CH4 and CO. By doping with Ga, we succeeded in shifting the selectivity of these catalysts almost completely toward CO. In-situ IR spectroscopy studies showed that the catalyst activity is direc ...

2022

Structure Evolution of Graphitic Surface upon Oxidation: Insights by Scanning Tunneling Microscopy

Nicola Marzari, Kumar Varoon Agrawal, Mounir Driss Mensi, Kuang-Jung Hsu, Shiqi Huang, Shaoxian Li, Mohammad Tohidivahdat

Oxidation of graphitic materials has been studied for more than a century to synthesize materials such as graphene oxide, nanoporous graphene, and to cut or unzip carbon nanotubes. However, the understanding of the early stages of oxidation is limited to t ...

AMER CHEMICAL SOC2022

Millisecond lattice gasification for high-density CO2- and O2-sieving nanopores in single-layer graphene

Emad Oveisi, Kumar Varoon Agrawal, Marina Micari, Mounir Driss Mensi, Luis Francisco Villalobos Vazquez de la Parra, Mostapha Dakhchoune, Shiqi Huang, Shaoxian Li, Deepu Joseph Babu

Etching single-layer graphene to incorporate a high pore density with sub-angstrom precision in molecular differentiation is critical to realize the promising high-flux separation of similar-sized gas molecules, e.g., CO2 from N2. However, rapid etching ki ...

2021

Methylammonium Triiodide for Defect Engineering of High-Efficiency Perovskite Solar Cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Ursula Röthlisberger, Jacques-Edouard Moser, Mounir Driss Mensi, Pascal Alexander Schouwink, Felix Thomas Eickemeyer, Mathias Dankl, Ulf Anders Hagfeldt, Lukas Pfeifer

The defects present in metal halide perovskite are deleterious to both the performance and stability of photovoltaic devices. Consequently, there is an intense focus on developing defect mitigation strategies. Herein we report a facile strategy that employ ...

2021

Phosphine Oxide Derivative as a Passivating Agent to Enhance the Performance of Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Hiroyuki Kanda, Mounir Driss Mensi, Hobeom Kim, Cansu Igci, Tom Theodorus Antonius Lummen, Aron Joel Huckaba, Valentin Ianis Emmanuel Queloz, Aditya Gilra, Albertus Adrian Sutanto

Defects of metal-halide perovskites detrimentally influence the optoelectronic properties of the thin film and, ultimately, the photovoltaic performance of perovskite solar cells (PSCs). Especially, defect-mediated nonradiative recombination that occurs at ...

2021

Benzodithiophene‐Based Spacers for Layered and Quasi‐Layered Lead Halide Perovskite Solar Cells

Kevin Sivula, Jun Ho Yum, Mounir Driss Mensi, Liang Yao, Nestor Guijarro Carratala, Han-Hee Cho, Barbara Alexandra Primera Darwich, Luc Emile Monnier

Incorporating extended pi-conjugated organic cations in layered lead halide perovskites is a recent trend promising to merge the fields of organic semiconductors and lead halide perovskites. Herein, we integrate benzodithiophene (BDT) into Ruddlesden–Poppe ...

2021

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