Directly synthesized nitrogen-doped microporous carbons from polybenzoxazine resins for carbon dioxide capture. Issue 36 (14th August 2017)

• Record Type: Journal Article
• Authors: Wu, Jia-Yu; Mohamed, Mohamed Gamal; Kuo, Shiao-Wei
• Is Part Of: Polymer chemistry. Volume 8:Issue 36(2017)
• Page Start: 5481
• Page End: 5489
• Publication Date: 2017-08-14
• Subjects: Polymers -- Periodicals; Macromolecules -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1039/c7py01026e
• Languages: English
• ISSNs: 1759-9954

Abstract

Abstract : Highly ordered nitrogen-doped microporous carbons as CO2 capturers from the cyano-functional benzoxazine monomer through thermal curing, carbonization, and KOH activation. Abstract : In this study, nitrogen-doped microporous carbons, with potential use as capturers for CO2, were synthesized directly from two new benzoxazines (BZCN and BZPh)—prepared from two phenols (phenol and 4-cyanophenol, respectively), CH2 O, and 1, 3, 5-tris(4-aminophenoxy)benzene (TPhA)—through thermal curing, carbonization, and KOH activation. FTIR and NMR spectroscopy confirmed the corresponding chemical structures; temperature-dependent FTIR spectroscopic and DSC analyses revealed the thermal curing behavior of the ring opening polymerizations of these two new benzoxazine monomers. Of the two benzoxazines, the nitrile-functionalized benzoxazine BZCN, derived from 4-cyanophenol, exhibited—after thermal curing, carbonization, and KOH activation—enhanced thermal properties, cross-linking density, and CO2 capture, based on thermogravimetric analysis, dynamic mechanical analysis, and Brunauer–Emmett–Teller (BET) analysis. Analyses using Raman spectroscopy, wide-angle X-ray diffraction, transmission electron microscopy, the BET method, and X-ray photoelectron spectroscopy provided information about the microporous structures and surface areas of these two highly ordered microporous N-doped carbon materials.