Investigation of the functional groups on the surface of activated carbons

High-Surface-Area Mesoporous Activated Carbon from Hemp Bast Fiber Using Hydrothermal Processing

“…No significant difference is observed among the spectra of these samples, suggesting similar surface functional groups regardless of the biochar-to-KOH ratio. The presence of such functional groups was also reported by Barkauskas et al [40] for commercial granulated activated carbon.…”

Biomass‐Derived Carbon: A Value‐Added Journey Towards Constructing High‐Energy Supercapacitors in an Asymmetric Fashion

“…Surfacef unctionalization is one of the effective methods used Figure 6. [65] Franckowiak et al explained that the presenceo fs urfacef unctional groups could modify the electronic properties (electron-donor or -acceptor properties) of carbon materials, which, in turn, could affect the EDLC chargingm echanism andi nduce pseudocapacitance faradaic reactions. a) Plot of specific capacitance normalized by BET SSA for the carbons in this studyand in two other studies with identical electrolytes.…”

Influence of chemical treatments of activated carbon support on the performance and deactivation behavior of promoted Ru catalyst in ammonia synthesis

“…The increase and decreases in the spectrum peaks shows how the treatment conditions affect the structure of material [22]. The amounts of functional groups can be determined by potentiometric titration which positively correlates with the intensity of the peaks of hydrophilic functional groups in the FTIR spectra [23]. Therefore, if the same procedure is used in sample preparation for IR spectroscopy including the same amount and homogeneity of the sample dispersed in the KBr pellet method, the intensity of peaks can be used for quantitative comparison of functional groups.…”

“…The peaks of these heteroatom containing groups (C-X, X: O, N, S and Cl) overlap with each other and could not be easily identified. Therefore, the concept of conventional functional groups is often used to characterize the surfaces of active carbon [23].…”