Nitriding an Oxygen-Doped Nanocarbonaceous Sorbent Synthesized via Solution Plasma Process for Improving CO₂ Adsorption Capacity.

ABSTRACT: The synthesis of carbon nanoparticles (Cn) and oxygen-doped nanocarbon (OCn) was successfully done through a one-step synthesis by the solution plasma process (SPP). The Cn and OCn were nitrogen-doped by nitridation under an ammonia atmosphere at 800 °C for 2 h to yield NCn and NOCn, respectively, for carbon dioxide (CO₂) adsorption. The NOCn exhibited the highest specific surface area (~570 m² g^-1) and highest CO₂ adsorption capacity (1.63 mmol g^-1 at 25 °C) among the synthesized samples. The primary nitrogen species on the surface of NOCn were pyridinic-N and pyrrolic-N. The synergistic effect of microporosity and nitrogen functionality on the NOCn surface played an essential role in CO₂ adsorption enhancement. From the th

SUBMITTER: Pornaroontham P 

PROVIDER: S-EPMC6956079 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature