Mojtaba Chevalier

Education

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  Ecole polytechnique fédérale de Lausanne

  2017 - 2022

  Doctor of Philosophy (Ph.D.) Chemical Engineering

  Crystallization of Size-Selective Nanopores in Graphene for Gas SeparationNanoporous single-layer graphene (N-SLG) membranes, owing to their single-atom thinness, have the potential to exceed the permeance and selectivity limits of gas separation membranes. However, two key issues in the top-down N-SLG synthesis need to be addressed to achieve scalable, high-performance membranes: a) reproducible synthesis of high-quality SLG film by chemical vapor deposition (CVD) on a LOW-COST Cu… Show more Crystallization of Size-Selective Nanopores in Graphene for Gas SeparationNanoporous single-layer graphene (N-SLG) membranes, owing to their single-atom thinness, have the potential to exceed the permeance and selectivity limits of gas separation membranes. However, two key issues in the top-down N-SLG synthesis need to be addressed to achieve scalable, high-performance membranes: a) reproducible synthesis of high-quality SLG film by chemical vapor deposition (CVD) on a LOW-COST Cu substrate, and b) introducing high-density of PORES with a narrow pore-size-distribution (PSD). During my PhD studies, I developed a simple annealing method to prepare smooth and oriented Cu foil to obtain high-quality SLG membranes. On the fundamental science front, I developed two novel methods of tuning the PSD in SLG for gas separation utilizing CO2 as a mild etchant by itself and combined with CH4 for simultaneous etching and growth dynamics. Thus, decoupling the pore nucleation and expansion in SLG. Show less

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  EPFL (École polytechnique fédérale de Lausanne)

  2022 -

  Post-Doctoral Researcher Materials Science

  Scale-up of nanoporous graphene membranes for carbon capture applications to capture industrial CO2 emissions at the point source

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  Eindhoven University of Technology

  2014 - 2016

  Master's Degree Chemical Process Technology
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  University of Tehran

  2007 - 2011

  Bachelor of Science (BS) Chemical Engineering