Halloysite nanotubes capturing isotope selective atmospheric CO2

Scientific Reports
Subhra JanaManik Pradhan

Abstract

With the aim to capture and subsequent selective trapping of CO2, 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 CO2 from the atmosphere at standard ambient temperature and pressure. The preferential adsorption of three major abundant isotopes of CO2 ((12)C(16)O2, (13)C(16)O2, 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. CO2 adsorption/desorption cycling measurements demonstrate that the adsorbent can be regenerated at relatively low temperature and thus, recycled repeatedly to capture atmospheric CO2. The amine grafted halloysite shows excellent stability even in oxidative environments and has high efficacy of CO2 capture, introducing a new route to the adsorption of isotope selective atmospheric CO2.

References

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Citations

Jan 23, 2016·Analytical Chemistry·Sankar DasSubhra Jana
Jun 18, 2016·ACS Applied Materials & Interfaces·Mengya NiuAidong Tang
May 24, 2017·Nano Letters·Apolo NamboMahendra Sunkara
Oct 7, 2015·Advanced Materials·Yuri LvovRawil Fakhrullin
Jan 5, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Rômulo B Vieira, Heloise O Pastore
Mar 3, 2019·Scientific Reports·Dema A AlmasriSaid Ahzi
Feb 25, 2021·ACS Applied Materials & Interfaces·Jiangtao PengShiding Miao
Apr 11, 2020·The Journal of Physical Chemistry. C, Nanomaterials and Interfaces·Daniel Tunega, Ali Zaoui

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