Cobalt nanoparticles embedded into polydimethylsiloxane-grafted cocoa shell: functional agrowaste for CO2 capture

  • Julien VieillardEmail author
  • Nabil BouaziziEmail author
  • Flavia Fioresi
  • Radhouane Bargougui
  • Nicolas Brun
  • Patrick Nkuigue Fotsing
  • Emmanuel Djoufac Woumfo
  • Olivier Thoumire
  • Hassan Atmani
  • Nadine Mofaddel
  • Franck Le Derf


This paper presents for the first time surface functionalization of cocoa shells (CS) through the covalent grafting of 3-aminopropyltriethoxysilane (APTES) followed by the substitution of poly(dimethylsiloxane) (PDMS) and in situ generation/insertion of cobalt nanoparticles (Co-NP). The immobilization and stability of APTES–PDMS on cocoa shell were confirmed by Fourier transform infrared spectroscopy and differential scanning calorimetry. Morphological analyses by scanning electron microscopy demonstrated that Co-NPs successfully grew on the surface of CS–APTES–PDMS. The CO2-adsorption capacity of these new materials was examined at ambient conditions. Both CS–APTES–PDMS and CS–APTES–PDMS–Co showed increased CO2 adsorption capacities as compared to unmodified cocoa shell. This enhancement was explained by the synergetic behavior of the silane derivate, PDMS grafting, and Co-NP incorporation for CO2 adsorption. This work represents a new step toward using cocoa shell as an excellent low-cost candidate for a variety of environmental applications such as CO2 storage at ambient temperature.



We thank Mr Antoine Fontaine for his help to improve the quality of some figures. This work was partially supported by the INSA Rouen, Rouen University, the CNRS, Labex SynOrg (ANR-11-LABX-0029), the European Battuta Program, the Normandy region (CBS network), the European Union (FEDER) and the Evreux Portes de Normandie Agglomeration.

Author contributions

All authors contributed to the manuscript, and approved of its final version.

Supplementary material

10854_2019_679_MOESM1_ESM.docx (1.9 mb)
Supplementary material 1 (DOCX 1971 KB)


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Julien Vieillard
    • 1
    Email author
  • Nabil Bouazizi
    • 1
    Email author
  • Flavia Fioresi
    • 1
  • Radhouane Bargougui
    • 1
  • Nicolas Brun
    • 2
  • Patrick Nkuigue Fotsing
    • 3
  • Emmanuel Djoufac Woumfo
    • 3
  • Olivier Thoumire
    • 4
  • Hassan Atmani
    • 4
  • Nadine Mofaddel
    • 1
  • Franck Le Derf
    • 1
  1. 1.Normandie Université, UNIROUEN, INSA Rouen, CNRS, COBRA (UMR 6014)EvreuxFrance
  2. 2.Institut Charles Gerhardt Montpellier, Université de Montpellier, ENSCM, CNRSMontpellierFrance
  3. 3.Laboratoire de Physico-Chimie des Matériaux Minéraux, Département de Chimie Inorganique, Faculté des SciencesUniversité de Yaoundé IYaoundeCameroon
  4. 4.Normandie Université, UNIROUEN, CNRS, PBS, UMR 6270EvreuxFrance

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