Journal
LANGMUIR
Volume 34, Issue 1, Pages 30-35Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.7b01353
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Funding
- JSPS KAKENHI [26709061]
- Center for Functional Nano Oxide at Hiroshima University
- Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- Grants-in-Aid for Scientific Research [26709061] Funding Source: KAKEN
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Monodisperse, nitrogen-doped hollow carbon spheres of submicron size were synthesized using hexamethoxymethylmelamine as both a carbon and nitrogen source in a short (1 h) microwave-assisted synthesis. After carbonization at 550 degrees, porous carbon spheres with a remarkably high nitrogen content of 37.1% were obtained, which consisting mainly of highly basic pyridinic moieties. The synthesized hollow spheres exhibited high selectivity for carbon dioxide (CO2) over nitrogen and oxygen gases, with a capture capacity up to 1.56 mmol CO2 g(-1). The low adsorption enthalpy of the synthesized hollow carbon spheres permits good adsorbent regeneration. Evaluation of the feasibility of scaling up shows their potential for large-scale applications.
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