Microcrystalline cellulose-based, nitrogen-doped carbon nanoflakes for adsorption of uranium and thorium
Journal article, 2025
Nitrogen-doped carbon nanoflakes (N-CNFs) were synthesized via a simple acid-assisted carbonization process using microcrystalline cellulose (MCC) and urea. The as-synthesized N-CNFs were used for the adsorption of simulated radioactive nuclides such as uranium [U(vi)] and thorium [Th(iv)]. Under optimized experimental conditions, N-CNFs removed ≈45.6 and ≈48.7 ppm of U(vi) and Th(iv), respectively. U(vi) and Th(iv) adsorption followed the Langmuir and pseudo-second-order kinetic models. The effect of pH, concentration, and loading capacity was also explored. Furthermore, adsorption-desorption studies were conducted to evaluate the recyclability of N-CNFs as an adsorbent, which demonstrated good recyclability efficiency for four cycles.
Synthesised
Carbon nanoflakes
Experimental conditions
Simple++
Nitrogen-doped carbons
Pseudo-second-order kinetic models
Recyclability
Langmuirs
Carbonization process
Micro-crystalline cellulose
Author
Kiran Gupta
Oriental University
Ruchi Aggarwal
Malaviya National Institute of Technology Jaipur
Manish Sharma
Malaviya National Institute of Technology Jaipur
Ranju Yadav
Oriental University
Ragini Gupta
Malaviya National Institute of Technology Jaipur
Gunnar Westman
Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry
Sumit Kumar Sonkar
Malaviya National Institute of Technology Jaipur
Reaction Chemistry and Engineering
20589883 (eISSN)
Vol. In PressSubject Categories (SSIF 2025)
Other Chemical Engineering
DOI
10.1039/d4re00613e