Cobalt nanoparticles embedded into polydimethylsiloxane-grafted cocoa shell

Abstract : 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.
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https://hal.umontpellier.fr/hal-02100584
Contributeur : Odile Hennaut <>
Soumis le : mardi 16 avril 2019 - 09:52:46
Dernière modification le : jeudi 14 novembre 2019 - 10:11:37

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Julien Vieillard, Nabil Bouazizi, Flavia Fioresi, Radhouane Bargougui, Nicolas Brun, et al.. Cobalt nanoparticles embedded into polydimethylsiloxane-grafted cocoa shell. Journal of Materials Science: Materials in Electronics, Springer Verlag, 2019, 30 (4), pp.3942-3951. ⟨10.1007/s10854-019-00679-5⟩. ⟨hal-02100584⟩

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