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Julien vieillard

Julien vieillard

University of Rouen Normandie, France

Title: Functionalization of cocoa shell (CS) surfaces using nanoparticles and their application in CO2 storage


Biography: Julien vieillard


The aim of this research is to investigate how the covalent grafting of cocoa shell surface (CS) may improve its activity for the adsorption of CO2 at 20°C. Pure cocoa shells (CS) are agricultural by-products, usually inexpensive and abundantly available. They were functionalized by silanization and subsequent immobilization of cobalt nanoparticles (Co-NPs). In parallel, some carbon material was generated by hydrothermal treatment then post functionalized to increase the cocoa shell specific surface. Finally some core-shell nanoparticles have been also synthetized using cocoa shell as a core and zinc oxide as a shell, then some post-functionalization with nanoparticles insertion were added. The physical and thermal properties of the adsorbents like analysis stability, surface charge and morphology were investigated by FTIR, SEM, TEM, EDX, BET, DSC and zeta potentiometry techniques. The performance for the CO2 capture was investigated and the high adsorption capacity were mainly attributed to their original structure.

Recent Publications :

  1. F. Fioresi, J. Vieillard, R. Bargougui, N. Bouazizia, P. Nkuigue Fotsing, E. Djoufac Woumfo, N. Brun, N. Mofaddel, F. Le Derf, “Chemical modification of the cocoa shell surface using diazonium salts”, J. colloid and interface science, 2017
  2. N. Bouazizi, T. Boudharaa, R. Bargougui, J. Vieillard, S. Ammare, F. Le Derf, A. Azzouz, « Synthesis and properties of ZnO-HMD@ZnO-Fe/Cu core-shell as advanced material for hydrogen storage. », Journal of Colloid and Interface Science 491 (2017) 89–97.
  3. N. Bouazizi, S. Louhichi, R. Radhouane, J. Vieillard, F. Le Derf, A Azzouz, “CuO-loaded SBA-15@ZnO with improved electrical properties and affinity towards hydrogen”, Applied Surface Science, Volume 404, 2017, Pages 146-153
  4. T. Clamens, T. Rosay, A. Crépin, T.Grandjean, T. Kentache, J. Hardouin, P. Bortolotti, A. Neidig, M. Mooij, M. Hillion, J. Vieillard, P. Cosette, J. Overhage, F.O’Gara, E. Bouffartigues, A. Dufour, S. Chevalier, B. Guery, P. Cornelis, M. G. J. Feuilloley & O. Lesouhaitier, « The aliphatic amidase AmiE is involved in regulation of Pseudomonas aeruginosa virulence », Scientific reports 7 (2017)  in press
  5. N. Bouazizi, R. Bargougui, A. Benghnia, J. Vieillard, S. Ammar, A. Azzouz, “Synthesis of tin oxide activated by DAN grafting and Mo nanoparticles insertion for optoelectronics properties improvements. »,  RSC Advances, 2016, 6, 95405–95416,
  6. J. Vieillard, M. Hubert-Roux, F. Brisset, C. Soulignac, F. Fioresi, N. Mofaddel, S. Morin-Grognet, C. Afonso, F. Le Derf, « Atmospheric Solid Analysis Probe-Ion Mobility Mass Spectrometry: An Original Approach to Characterize Grafting on Cyclic Olefin Copolymer Surfaces. », Langmuir 31 (2015) 31,13138–13144
  7. T. Rosay, A. Bazire, S. Diaz, T. Clamens, A.-S. Blier, L. Mijouin, B. Hoffmann, J.-A. Sergent, E. Bouffartigues, W. Boireau, J. Vieillard, C. Hulen, A. Dufour, N.J. Harmer, M.G.J. Feuilloley, O. Lesouhaitier, « Pseudomonas aeruginosa Expresses a Functional Human Natriuretic Peptide Receptor Ortholog: Involvement in Biofilm Formation », MBio 6 (2015)  e01033-15. (IF=6.8)
  8. F., J. Vieillard, B. Berton, S. Morin-Grognet, C. Duclairoir-Poc, F. Le Derf, « Surface functionalization of cyclic olefin copolymer with aryldiazonium salts: A covalent grafting method », Applied Surface Science 329 (2015) 337-346. (IF=2.7)