Jump to main content
Jump to site search

Issue 44, 2019
Previous Article Next Article

Triazine-functionalized covalent benzoxazine framework for direct synthesis of N-doped microporous carbon

Author affiliations

Abstract

A covalent benzoxazine framework (CBF) was synthesized through a one-pot Mannich reaction of the planar molecules 1,3,5-tris(4-aminophenyl)triazine (TAPT) and 2,4,6-tris(p-hydroxyphenyl)triazine (THPT) with paraformaldehyde. This covalent benzoxazine framework underwent thermal curing to generate a highly cross-linked covalent benzoxazine framework (CCBF), with subsequent carbonization and KOH activation providing a nitrogen-doped microporous carbon (N-DMC)—prepared without the need for a template. This nitrogen-doped microporous carbon possessed a spherical morphology, excellent thermal stability (with a Td5 value of 663 °C and a char yield of 85%), a high BET surface area (1469 m2 g−1), and a pore size of 2.07 nm. The thermal transformations from the CBF to the CCBF and then to N-DMC enhanced the CO2 capture ability and electrochemical capacitance. The nitrogen-doped microporous carbon displayed excellent CO2 capture capacities of 3.85 and 7.46 mmol g−1 at 298 and 273 K, respectively; moreover, it provided an electrochemical capacitance of 185 F g−1 at a current density of 1.0 A g−1, as well as excellent stability (average capacitance retention of 87% at 20 A g−1 after 4000 cycles).

Graphical abstract: Triazine-functionalized covalent benzoxazine framework for direct synthesis of N-doped microporous carbon

Back to tab navigation

Supplementary files

Publication details

The article was received on 15 Aug 2019, accepted on 19 Oct 2019 and first published on 21 Oct 2019


Article type: Paper
DOI: 10.1039/C9PY01231A
Polym. Chem., 2019,10, 6010-6020

  •   Request permissions

    Triazine-functionalized covalent benzoxazine framework for direct synthesis of N-doped microporous carbon

    H. R. Abuzeid, A. F. M. EL-Mahdy, M. M. M. Ahmed and S. Kuo, Polym. Chem., 2019, 10, 6010
    DOI: 10.1039/C9PY01231A

Search articles by author

Spotlight

Advertisements