Jump to main content
Jump to site search


3D defective graphenes with subnanometric porosity obtained by soft-templating following zeolite procedures

Author affiliations

Abstract

By applying the well-known templating mechanism employed for the synthesis of mesoporous silicas to the structuration of sodium alginate, a novel defective 3D tubular graphene material (graphenolite) with hierarchical macro/meso/micro-porous structure, very high powder specific surface area (1820 m2 g−1) and regular micropore size (0.6 nm) has been obtained. The key feature of the process is the filmogenic property of alginate that is able to replicate the liquid crystal rods formed by the CTAC template in the aqueous phase. The 3D graphene exhibits 2.5 times higher capacitance using Li+ electrolyte compared to K+, indicating that Li+ can ingress to the ultramicropores which, in contrast, are not accessible to K+. Electrochemical impedance measurements also indicate much lower resistance for Li+ in comparison to K+ electrolyte, confirming the benefits of controlled microporosity of 3D graphene granting selective access to Li+, but not to K+. The present report opens the door for the synthesis of a wide range of 3D graphene materials that could be prepared following similar strategies to those employed for the preparation of zeolites and periodic mesoporous aluminosilicates.

Graphical abstract: 3D defective graphenes with subnanometric porosity obtained by soft-templating following zeolite procedures

Back to tab navigation

Supplementary files

Publication details

The article was received on 03 Sep 2019, accepted on 15 Oct 2019 and first published on 21 Oct 2019


Article type: Paper
DOI: 10.1039/C9NA00554D
Nanoscale Adv., 2019, Advance Article
  • Open access: Creative Commons BY-NC license
  •   Request permissions

    3D defective graphenes with subnanometric porosity obtained by soft-templating following zeolite procedures

    L. Peng, A. Doménech-Carbó, A. Primo and H. García, Nanoscale Adv., 2019, Advance Article , DOI: 10.1039/C9NA00554D

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements