Appl. Sci. 2019, 9(16), 3349;

Carbon Spheres as CO2 Sorbents

P.Staciwa1, U.Narkiewicz1,*, D.Sibera1, D.Moszyński1, R.J.Wróbel1 and R.D.Cormia2

1 Institute of Chemical and Environment Engineering, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Pulaskiego 10, 70-322 Szczecin, Poland

2 Engineering Faculty, Chemistry Department, Foothill College, 12345 El Monte Road, Los Altos Hills, CA 94022, USA

* Correspondence:

Received: 27 June 2019; Accepted: 12 August 2019; Published: 15 August 2019


Microporous nanocarbon spheres were prepared by using a microwave assisted solvothermal method. To improve the carbon dioxide adsorption properties, potassium oxalate monohydrate and ethylene diamine (EDA) were employed, and the influence of carbonization temperature on adsorption properties was investigated. For nanocarbon spheres containing not only activator, but also EDA, an increase in the carbonization temperature from 600 _C to 800 _C resulted in an increase of the specific surface area of nearly 300% (from 439 to 1614 m2/g) and an increase of the CO2 adsorption at 0 _C and 1 bar (from 3.51 to 6.21 mmol/g).

Keywords: carbon nanospheres; nanocarbon spheres; carbon dioxide uptake; EDA