EFFECT OF STRUCTURE AND SURFACE STATE OF NITROGEN DOPED CARBON NANOTUBES ON THEIR FUNCTIONAL AND CATALYTIC PROPERTIES
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2021-05-01 |
| Journal | Journal of Structural Chemistry |
| Authors | Olga Yu. Podyacheva, Arina N. Suboch, S. A. Yashnik, Anton Salnikov, Svetlana V. Cherepanova |
| Institutions | Boreskov Institute of Catalysis, Russian Academy of Sciences |
| Citations | 5 |
Abstract
Section titled āAbstractāA comprehensive study of nitrogen doped carbon nanotubes (N-CNTs) with nitrogen content varying from 0 at.% to 7.3 at.% is reported. A correlation is revealed between the content of pyridine-like nitrogen and the defectivity of the N-CNT bamboo-like structure. A model of graphene layer with defects containing ordered carbon vacancies and pyridine nitrogen is proposed. The model is based on a combination of experimental data obtained by powder X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy, scanning electron microscopy and simulation of the N-CNT structure by the use of g-C3N4 structural elements. It is shown that more than a two-fold increase of the N-CNT specific capacity in acidic and alkaline electrolytes compared to that of undoped carbon nanotubes is due to the fact that N-CNTs posses significantly better hydrophilic properties due to the defects based on pyridine-like nitrogen centers. The N-CNT efficiency as a catalyst and a palladium catalyst support in the reaction of oxidative desulfurization of dibenzothiophene is demonstrated.