Pyrrolic N atoms are incorporated into five-memberedheterocyclicrings and are bonded to two carbon atoms. Such nitrogen species are not very common in carbon materials because pyrrolic species have a low stability, what makes that the concentration of this functionality is low after a carbonization ...
Nitrogen-doped porous activated carbon monoliths (NDP-ACMs) have long been the most desirable materials for supercapacitors. Unique to the conventional template based Lewis acid/base activation methods, herein, we report on a simple yet practicable novel approach to production of the three-dimensional...
The crystalline structures of NPCS/Mn3O4, NPCS/Mn3O4/S and S ware characterized by XRD using a diffractometer (Rigaku, Cu Ka radiation) from 5° to 85°. The surface areas and pore sizes of NPCS and NPCS/Mn3O4were estimated by the Brunauer–Emmett–Teller (BET) and Barrett-Joyner-H...
A nitrogen-containing molecular sieving carbon which contains at least 0.1 weight % nitrogen bonded to constituent carbon of the activated carbon. It exhibits improved ability to remove nitrogen oxides compared with the conventional adsorption methods using commercially available activated carbons or other ...
8. A compound according to any preceding claim wherein R^ is an aromatic heterocyclic ring (B) having 8-11 ring atoms including 2-4 heteroatoms of which at least one is N or NR^3 jn which Y2 contains 2-3 heteroatoms, one of which is S and 1-2 are N, with one N bonded to X3...
Uniform Fe3O4/Nitrogen-Doped Mesoporous Carbon Spheres Derived from Ferric Citrate-Bonded Melamine Resin as an Efficient Synergistic Catalyst for Oxygen Re... Developing a facile strategy to synthesize an efficient and inexpensive catalyst for the oxygen reduction reaction (ORR) is critical to the co...
In the case of C1 s, the peaks positioned at 282 eV was assigned to sp2 (sp2C) carbons atom bonded to nitrogen in NG (Mou et al., 2011) (Fig. 4a). In Fig. 4b spectra of O 1s, the peak centred at 527 eV corresponds to lattice oxygen of ZnO, CF and ZF (Wang et al...
Carbons in carboxylic groups (-COOH) are omitted from the aromaticity calculation because it is not known how many -COOH groups are bonded to aromatic structures and how many to aliphatic structures (Schnitzer 1991). Aromatic carbon (118–165 ppm) Aromaticity (%) = ––––...
Pyridinic nitrogen, that is N bonded to two C atoms in six-membered rings at the edge of the graphitic carbon layer, would provide the main initial active sites for electrochemical behaviors18,19. Scientific REPOrTS | 7:40259 | DOI: 10.1038/srep40259 4 www.nature.com/scientificreports/ ...
band, respectively. The D band at 1334 cm−1originates from sp3-bonded carbons and the G band at 1600 cm−1is attributed to the E2gvibration mode of all the sp2bonds of graphite42. Thus the Roman spectra clearly give a verification of sp2-bonded carbons in Si-C-N hybrid ...