Raman spectroscopy study of the transformation of the carbonaceous skeleton of a polymer-based nanoporous carbon along the thermal annealing pathway

Cheng Hu, Saeid Sedghi, Ana Silvestre-Albero, Gunther Andersson, Anirudh Sharma, Phillip Pendleton, Francisco Rodriguez-Reinoso, Katsumi Kaneko, Mark Biggs

    Research output: Contribution to journalArticle

    68 Citations (Scopus)

    Abstract

    We report a multi-wavelength Raman spectroscopy study of the structural changes along the thermal annealing pathway of a poly(furfuryl alcohol) (PFA) derived nanoporous carbon (NPC). The Raman spectra were deconvoluted utilizing G, D, D′, A and TPA bands. The appropriateness of these deconvolutions was confirmed via recovery of the correct dispersive behaviours of these bands. It is proposed that the ID/IG ratio is composed of two parts: one associated with the extent of graphitic crystallites (the Tuinstra-Koenig relationship), and a second related to the inter-defect distance. This model was used to successfully determine the variation of the in-plane size and intra-plane defect density along the annealing pathway. It is proposed that the NPC skeleton evolves along the annealing pathway in two stages: below 1600 °C it was dominated by a reduction of in-plane defects with a minor crystallite growth, and above this temperature growth of the crystallites accelerates as the in-plane defect density approaches zero. A significant amount of transpolyacetylene (TPA)-like structures was found to be remaining even at 2400 °C. These may be responsible for resistance to further graphitization of the PFA-based carbon at higher temperatures.

    Original languageEnglish
    Pages (from-to)147-158
    Number of pages12
    JournalCarbon
    Volume85
    Issue number1
    DOIs
    Publication statusPublished - 1 Apr 2015

    Fingerprint Dive into the research topics of 'Raman spectroscopy study of the transformation of the carbonaceous skeleton of a polymer-based nanoporous carbon along the thermal annealing pathway'. Together they form a unique fingerprint.

    Cite this