Synthesis of novel BTPhen-functionalized silica-coated magnetic nanoparticles for separating trivalent actinides and lanthanides

BTPhen [bis-(1,2,4-triazin-3-yl)-1,10-phenanthroline] functionalized magnetic nanoparticles (MNPs), which selectively extracts Am(III) over Eu(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 by-passing the problematic benzylic oxidation with stoichiometric SeO2

Separation of minor actinides from lanthanides using immobilized ligand systems: the role of the counterion

A CyMe4-BTPhen functionalized silica gel that selectively extracts Am(III) over Eu(III) from 4 M HNO3 with a separation factor > 154 has been developed. Evidence is presented that the counterion surrounding the M(III) in the proposed 1:1 [BTPhen:M(III)] complex plays an important role in the complexation of Am(III) and Eu(III)

The library of the future

The library was once a temple of books. But much of what filled library shelves is now available online, without you having to leave your computer or mobile. What are libraries doing to ensure they don’t become extinct? Well, it appears the library of the future will be a content creator, a publisher, and a conserver of ‘unique’ stuff. Guests: Eli Neiburger Associate Director for IT & Production, Ann Arbor District Library Joe Murphy Librarian, technology trend analyst, Director of Library Futures at Innovative Interfaces Jane Cowell Director of Regional Access and Public Libraries, State Library of Queensland Simon Groth Writer, editor, of fiction and non-fiction. Director of if:book Australia, exploring the future of the boo

Synthesis and screening of a novel (dppz)-BTPhen ligand for separation of Americium from Europium

A novel bis(1,2,4-triazin-3-yl)-dppz (dipyridophenazine) BTPhen ligand has been synthesised and screened for its ability to selectively extract Am(III) selectively from Eu(III) from 0.001 M – 2 M HNO3. The ligand showed preferential extraction for Am(III) over Eu(III) as the [HNO3] increased towards 2 M with a reported separation factor (SFAm/Eu) of ~ 225. The synthesis towards the dppz-BTPhen ligand employs a truncated synthetic approach, involving two one-pot reactions