In:
Scientific Reports, Springer Science and Business Media LLC, Vol. 5, No. 1 ( 2015-03-04)
Abstract:
With the aim to capture and subsequent selective trapping of CO 2 , a nanocomposite has been developed through selective modification of the outer surface of the halloysite nanotubes (HNTs) with an organosilane to make the nanocomposite a novel solid-phase adsorbent to adsorb CO 2 from the atmosphere at standard ambient temperature and pressure. The preferential adsorption of three major abundant isotopes of CO 2 ( 12 C 16 O 2 , 13 C 16 O 2 and 12 C 16 O 18 O) from the ambient air by amine functionalized HNTs has been explored using an optical cavity-enhanced integrated cavity output spectroscopy. CO 2 adsorption/desorption cycling measurements demonstrate that the adsorbent can be regenerated at relatively low temperature and thus, recycled repeatedly to capture atmospheric CO 2 . The amine grafted halloysite shows excellent stability even in oxidative environments and has high efficacy of CO 2 capture, introducing a new route to the adsorption of isotope selective atmospheric CO 2 .
Type of Medium:
Online Resource
ISSN:
2045-2322
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2015
detail.hit.zdb_id:
2615211-3
