Surface Chemistry of Activated Carbons: Combining the Results of Temperature-Programmed Desorption, Boehm, and Potentiometric Titrations

Surface characteristics and antibacterial activity of a silver-doped carbon monolith

“…According to the literature [21,[23][24][25], TPD peaks can be assigned to specific surface groups. The CO 2 profile results from carboxylic acids at low temperatures and lactones at higher temperatures; carboxylic anhydrides are the origin of both CO and CO 2 peaks; phenols, ethers and carbonyls are the origin of the CO peak.…”

Development of Doped Nanoporous Carbons for Hydrogen Storage

“…We anticipate the desorption species (whether H 2 or H 2 O) will depend not only on the nature of the oxygen functional groups, but also the oxygen groups populated by spilled over hydrogen, which would be dependent upon adsorption temperature. Here, we use temperature programmed desorption (TPD), which has been used extensively for the study of oxygen functional groups 19,23 and spilt-over hydrogen 24,25 . In this section, TPD is employed to identify the desorbed species from various oxygenmodified carbon materials, with an emphasis on H 2 and H 2 O.…”

“…Both RBMA and SWNT were selected for these studies. RBMA had behavior at low pressure characteristic of hydrogenated tetrahedral amorphous carbon, while SWNT had been theoretically predicted to partially rehybridize to sp 3 carbon upon the application of high pressure [22] and/or resulting from hydrogen chemisorption [23]. Cheng, et al, showed through molecular dynamics simulations that SWNTs were prone to distortion upon exposure to hydrogen which resulted in an increased adsorption energy and stretching of the molecular hydrogen bond [24].…”

Effect of Chemical Oxidation on the Adsorption Properties of Cationic Dye on Activated Carbons Prepared from Locally Atropa belladonna

“…Generally, the adsorption capacity of ACs significantly depended on their surface chemistry and is largely influenced by both quantity and type of the surface functional groups. Accordingly, many studies have considerable interests in the improvement of the surface chemistry properties of ACs via chemical oxidation and reported their relations with the adsorption of dyes and heavy metals in the last two decades [3][4][5][6][7][8][9][10][11][12][13].…”