IR studies of carbons—II

Identification and Spectral Properties of Polycyclic Aromatic Hydrocarbons in Carbonaceous Soot Produced by Laser Pyrolysis

“…A rather broad but weak plateau between 1400 and 1000 cm À1 with some distinct bands at 1260, 1243, 1180, 1154, 1077, and 1031 cm À1 is caused by a series of absorptions due to different functional groups like CÀH, CÀOÀC, CÀOH, and CÀC. Morterra & Low (1983, 1985 attributed a broad band around 1260 cm À1 to ether-like CÀO bonds cross-linking polyaromatic and also aliphatic domains, but the authors also mentioned that the band is a summation of absorptions due to species with and without oxygen. However, an exact assignment of bands in this broad plateau to special groups remains speculative since there are a lot of different functional groups with single bonds integrated in varying chemical environments, leading to a distribution of vibrational bands in this spectral range.…”

Characteristics of adsorption phase with water/organic mixtures at a surface of activated carbons possessing intraparticle and textural porosities

“…After converting spectra into Kubelka-Munk units and subtraction of the baseline it is possible to observe the IR bands related to adsorbed water (3000-3600 cm À1 ) and surface functionalities with C O (in carboxylic, anhydride, lactone and ketene at 1750-1630 cm À1 ), C-O (lactonic, ether, phenol, etc. at 1300-1000 cm À1 ), C-H (3100-2800 cm À1 ), CC (1600-1450 cm À1 ) and CH (3070-3030 cm À1 ) in aromatic groups, and twinned bonds C C C and C C O (2070-2040 cm À1 ) [41][42][43][44][45].…”

Interaction of amphetamine and its N-alkyl-substituted derivatives with micro- and mesoporous adsorbents in polar liquids

“…3. FTIR band assignment for A2PS and A2PS-O is given in Table 3 according to the literature [43][44][45][46][47]. As expected, carbon oxidation enhances concentration of carboxyl groups.…”