Nano magnetite decorated multiwalled carbon nanotubes: a robust nanomaterial for enhanced carbon dioxide adsorption

作者：Mishra Ashish Kumar^*; Ramaprabhu Sundara

来源：Energy & Environmental Science, 2011, 4(3): 889-895.

DOI：10.1039/c0ee00076k

It has long been seen as a demanding task to counteract the raised levels of greenhouse gases including carbon dioxide (CO(2)). Current worldwide research is focused on the investigation of materials which can capture large amounts of CO(2) through physical or chemical adsorption. The present work focuses on a high pressure CO(2) adsorption study of functionalized MWNTs (f-MWNTs) and a magnetite decorated MWNT nanocomposite. Multiwalled carbon nanotubes (MWNTs) were prepared by a catalytic chemical vapor deposition method followed by purification and functionalization. Magnetite (Fe(3)O(4)) nanoparticles were decorated over the f-MWNT surface by a chemical method. The functionalized MWNTs and magnetite decorated MWNTs were characterized by electron microscopy, X-ray powder diffraction, Raman spectroscopy and FTIR spectroscopy. The CO(2) adsorption capacity was measured using high pressure Sieverts' apparatus. A large enhancement in the CO(2) adsorption capacity was achieved by decorating magnetite nanoparticles over the MWNT surface.

• 出版日期2011-3