Rapid sol–gel synthesis of honeycomb-layered Na3Ni2BiO6 and orthorhombic Na3Ca2BiO6

Emily Luke, Jason L Potticary, Sven Friedemann, Simon R Hall

Research output: Contribution to journalArticle (Academic Journal)peer-review

2 Citations (Scopus)

Abstract

The A3M2M′O6 type materials Na3Ca2BiO6 and Na3Ni2BiO6 were successfully synthesised through two sol–gel techniques – a method based on a natural deep eutectic solvent, and a biopolymer-mediated synthesis. The materials were analysed using Scanning Electron Microscopy to determine if there was a difference in final morphology between the two methods, and it was found that the natural deep eutectic solvent method resulted in a more porous morphology. For both materials, the optimum dwell temperature was found to be 800 °C, which in the case of Na3Ca2BiO6 was a much less energy-intensive synthesis process than its seminal solid-state synthesis. Magnetic susceptibility measurements were undertaken on both materials. It was found that Na3Ca2BiO6 exhibits only weak, temperature independent paramagnetism. Na3Ni2BiO6 was found to be antiferromagnetic, with a Néel temperature of 12 K, in line with previously reported results.
Original languageEnglish
Pages (from-to)3188-3194
Number of pages7
JournalDalton Transactions
Volume52
Issue number10
DOIs
Publication statusPublished - 13 Feb 2023

Bibliographical note

Funding Information:
E. J. L., J. P. and S. R. H. would like to thank the Engineering and Physical Sciences Research Council (grants EP/L016648/1 and EP/V047701/1) and the Bristol Centre for Functional Nanomaterials for project funding. S. F.'s work was partially supported by the EPSRC under grants EP/R011141/1, EP/V048759/1, as well as the ERC Horizon 2020 programme under grant 715262-HPSuper. The authors would like to thank Natalie Pridmore for running the PXRD experiments. The authors would like to acknowledge the support of the Henry Royce Institute for advanced materials for E. J. L. through the Student Equipment Access Scheme enabling access to SQUID facilities at The Royce Discovery Centre at the University of Sheffield; EPSRC Grant Number EP/R00661X/1 & EP/P02470X/1).

Publisher Copyright:
© 2023 The Royal Society of Chemistry.

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