Preparation and characterization of multi-walled carbon nanotubes impregnated with polyethyleneimine for carbon dioxide capture. (2nd March 2015)

• Record Type: Journal Article
• Authors: Lee, Min-Sang; Lee, Seul-Yi; Park, Soo-Jin
• Is Part Of: International journal of hydrogen energy. Volume 40:Number 8(2015)
• Page Start: 3415
• Page End: 3421
• Publication Date: 2015-03-02
• Subjects: Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2014.12.104
• Languages: English
• ISSNs: 0360-3199

Abstract

<abstract xml:lang="en" abstract-type="author" id="abs0010"> <title id="sectitle0010">Abstract</title> <sec> <p id="abspara0010">In this work, multi-walled carbon nanotubes impregnated with polyethyleneimine (MWCNT/PEI) have been prepared by wet-impregnation method with various PEI loadings for CO₂ capture. The surface features and morphology were observed by scanning electron microscopy (SEM) and the textural properties were analyzed by N₂/77 K adsorption–desorption isotherms. The CO₂ adsorption capacity was evaluated by thermogravimetric analysis (TGA) method at 15% CO₂ partial pressure. The MWCNT/PEI exhibited higher CO₂ adsorption capacity than pristine MWCNTs. This result suggested that amine groups were attached on carbon surfaces in the impregnation process, leaving CO₂ affinity sites on MWCNT surfaces. MWCNT/PEI exhibited superior cycle stability for CO₂ capture, indicating great potential for application in post-combustion technology.</p> </sec> </abstract>