Ion exchange and binding in selenium remediation materials using DNP-enhanced solid-state NMR spectroscopy

Marco Mais; Javier Torroba; Nathan S Barrow; Subhradip Paul; Jeremy J Titman

doi:10.1016/j.ssnmr.2019.01.004

Ion exchange and binding in selenium remediation materials using DNP-enhanced solid-state NMR spectroscopy

Solid State Nucl Magn Reson. 2019 Apr:98:19-23. doi: 10.1016/j.ssnmr.2019.01.004. Epub 2019 Jan 20.

Authors

Marco Mais¹, Javier Torroba², Nathan S Barrow², Subhradip Paul³, Jeremy J Titman⁴

Affiliations

¹ School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
² Johnson Matthey Technology Centre, Blounts Court, Sonning Common, Reading, RG4 9NH, UK.
³ Nottingham DNP MAS NMR Facility, Sir Peter Mansfield Imaging Centre, University Park, Nottingham, NG7 2RD, UK.
⁴ School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK. Electronic address: [email protected].

PMID: 30690321
DOI: 10.1016/j.ssnmr.2019.01.004

Abstract

Selenate-loaded selenium water remediation materials based on polymer fibres have been investigated by dynamic nuclear polarization (DNP) enhanced solid-state NMR. For carbon-13 a significant reduction in experiment time is obtained with DNP even when compared with conventional carbon-13 NMR spectra recorded using larger samples. For the selenium remediation materials studied here this reduction allows efficient acquisition of {¹H}-⁷⁷Se heteronuclear correlation spectra which give information about the nature of the binding of the remediated selenate ions with the grafted side chains which provide the required ion exchange functionality.

Publication types

Research Support, Non-U.S. Gov't