Issue 94, 2016, Issue in Progress

Controllable synthesis of nitrogen-doped hollow carbon nanospheres with dopamine as precursor for CO2 capture

Abstract

Nitrogen-doped hollow carbon nanospheres (N-HCSs) have been synthesized by self-polymerization of dopamine on silica spheres using the modified Stöber method. The fabrication process uses dopamine as carbon and nitrogen source and tetraethyl orthosilicate as a structure-assisting agent. The particle sizes and shell thicknesses of the N-HCSs can be easily tuned in the range of 270–700 nm and 30–55 nm, respectively, by simply modifying the ethanol/water volume ratios. The surface areas of N-HCSs are in the range of 345–463 m2 g−1, and the total pore volumes are in the range of 0.34–0.52 cm3 g−1. The obtained N-HCSs have uniform mesoporous size of ∼4.0 nm, and high nitrogen loading content of 7.2 at%. Besides, the N-HCSs exhibit a considerable performance for CO2 capture with a capacity of 3.09 mmol g−1 at 25 °C and 1.0 bar and a good cycling stability.

Graphical abstract: Controllable synthesis of nitrogen-doped hollow carbon nanospheres with dopamine as precursor for CO2 capture

Supplementary files

Article information

Article type
Paper
Submitted
29 Jul 2016
Accepted
19 Sep 2016
First published
20 Sep 2016

RSC Adv., 2016,6, 91557-91561

Controllable synthesis of nitrogen-doped hollow carbon nanospheres with dopamine as precursor for CO2 capture

K. Xia, Y. Yu, Y. Li, S. Li, Y. Wang, G. Wang, H. Zhang and A. Chen, RSC Adv., 2016, 6, 91557 DOI: 10.1039/C6RA19218A

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