Synthesis of nitrogen-doped hollow carbon nanospheres for CO2 capture

Abstract

Here, we report the synthesis of nitrogen-doped hollow carbon nanospheres (N-HCSs) via a two-step Stöber method. The resultant N-HCSs possess a uniform size of ∼220 nm, a high nitrogen loading content of 14.8 wt% and a high surface area of 767 m² g⁻¹, as well as exhibit a considerable performance for CO₂ capture with a capacity of 2.67 mmol g⁻¹ and a high selectivity in a mixture gas (N₂ or O₂).