Publications de Luc Sébastien Bondaz

Print-light-synthesis of electrocatalytically active gas diffusion electrodes for fuel cell applications

Hubert Girault, Kumar Varoon Agrawal, Luc Sébastien Bondaz

The present work reports a simple approach to manufacture electrocatalytically active gas diffusion electrodes (GDEs) in two steps: (i) inkjet printing and (ii) flash light irradiation from a xenon flash lamp, a process called Print-light-synthesis (PLS). ...

Royal Society of Chemistry2025

A holistic approach for incorporating sub-angstrom gas-sieving pores in single-layer graphene: from atomic simulations to large area membranes

Luc Sébastien Bondaz

The ultimate thinness of graphene pores makes them ideal as a high-flux selective layer for manipulating molecular transport. However, due to the limited understanding of the formation of ångstrom (Å)-scale pores, controlling pore size and understanding ga ...

EPFL2025

Direct synthesis of nanocrystalline single-layer porous graphene for hydrogen sieving

Kumar Varoon Agrawal, Jian Hao, Luc Sébastien Bondaz

Porous single -layer graphene is promising as the selective layer for membrane-based gas separation thanks to the atomic thickness of the pore which can yield high permselective flux. Direct synthesis of porous graphene by chemical vapor deposition (CVD) i ...

Pergamon-Elsevier Science Ltd2024

Hydrogen production by waste tire recycling by photo-pyrolysis

Hubert Girault, Jordi Espin Marti, Luc Sébastien Bondaz, Bhawna Nagar, Wanderson Oliveira Da Silva

Waste tires are a major environmental concern due to their non-degradable nature and the large area occupied by them in landfills worldwide. Several recycling processes have been applied to minimize the high amount of waste tire disposal; in particular, py ...

2023

Selective Photonic Gasification of Strained Oxygen Clusters on Graphene for Tuning Pore Size in the Å Regime

Oleg Yazyev, Kumar Varoon Agrawal, Jian Hao, Luc Sébastien Bondaz, Shaoxian Li, Kristians Cernevics

Controlling the size of single-digit pores, such as those in graphene, with an & Aring; resolution has been challenging due to the limited understanding of pore evolution at the atomic scale. The controlled oxidation of graphene has led to & Aring;-scale p ...

AMER CHEMICAL SOC2023

Mechanistic Insights on Functionalization of Graphene with Ozone

Nicola Marzari, Kumar Varoon Agrawal, Kuang-Jung Hsu, Nicéphore Arthur François Bonnet, Luc Sébastien Bondaz, Shiqi Huang, Shaoxian Li

The exposure of graphene to O-3 results in functionalization of its lattice with epoxy, even at room temperature. This reaction is of fundamental interest for precise lattice patterning, however, is not well understood. Herein, using van der Waals density ...

Amer Chemical Soc2023

In Situ Nucleation-Decoupled and Site-Specific Incorporation of angstrom-Scale Pores in Graphene Via Epoxidation

Nicola Marzari, Kumar Varoon Agrawal, Kuang-Jung Hsu, Heng-Yu Chi, Luc Sébastien Bondaz, Victor Carle Adrien Boureau, Luis Francisco Villalobos Vazquez de la Parra, Shiqi Huang, Shaoxian Li, Mohammad Tohidivahdat

Generating pores in graphene by decoupled nucleation and expansion is desired to achieve a fine control over the porosity, and is desired to advance several applications. Herein, epoxidation is introduced, which is the formation of nanosized epoxy clusters ...

Wiley-V C H Verlag Gmbh2022

Rapid screening of nanopore candidates in nanoporous single-layer graphene for selective separations using molecular visualization and interatomic potentials

Luc Sébastien Bondaz, Rohit Karnik

Nanoporous single-layer graphene is promising as an ideal membrane because of its extreme thinness, chemical resistance, and mechanical strength, provided that selective nanopores are successfully incorporated. However, screening and understanding the tran ...

AIP Publishing2021

Centimeter-scale gas-sieving nanoporous single-layer graphene membrane

Kumar Varoon Agrawal, Luc Sébastien Bondaz, Mostapha Dakhchoune, Shiqi Huang, Guangwei He, Wan-Chi Lee

High-permeance, molecular-sieving, nanoporous single-layer graphene (NSLG) membranes are highly promising for gas separation. However, the formation of cracks during the transfer of NSLG to a low-cost porous support is difficult to avoid. These cracks are ...

2020