DOI: 10.1055/s-0036-1590865
© Georg Thieme Verlag Stuttgart · New York

Synthesis of Novel BTPhen-Functionalized Silica-Coated Magnetic Nanoparticles for Separating Trivalent Actinides and Lanthanides

Ashfaq Afsara, Joseph Cowella, Petr Distlerb, Laurence M. Harwood*a, Jan Johnb, James Westwooda
  • aChemical Sciences, University of Reading, Whiteknights, Reading, Berkshire RG6 6AD, UK   Email:
  • bDepartment of Nuclear Chemistry, Czech Technical University in Prague, Břehová 7, 11519 Prague 1, Czech Republic   Email:
The authors acknowledge the UK Engineering and Physical Sciences Research Council (grant No. EP/M026485/1) and the Grant Agency of the Czech Technical University in Prague (grant No. SGS15/216/OHK4/3T/14) for financial support (A.A. and P.D., respectively).
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Publication History

Received: 05 June 2017

Accepted after revision: 13 July 2017

Publication Date:
17 August 2017 (eFirst)

Dedicated to Victor Snieckus, a valued friend and colleague, on the occasion of his 80th birthday


Bis-(1,2,4-triazin-3-yl)-1,10-phenanthroline (BTPhen) functionalized magnetic nanoparticles (MNPs), which selectively extract Am(III) over europium(III) from 0.1 M HNO3 with fast kinetics and a separation factor of 30 have been synthesized. These MNPs also show a small but significant selectivity for Am(III) over Cm(III) with a separation factor of around 3 in 0.1 M HNO3. We report also the synthesis of these BTPhen and related ligands via an improved synthetic route bypassing the problematic benzylic oxidation with stoichiometric SeO2.

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