A1 Refereed original research article in a scientific journal

Highly tenebrescent hackmanites from natural nepheline



Authors: Agamah, Cecilia; Vuori, Sami; Mäkilä, Ermei; Peuronen, Anssi; Lastusaari, Mika

Publisher: Royal Society of Chemistry (RSC)

Publishing place: CAMBRIDGE

Publication year: 2025

Journal: Dalton Transactions

Journal name in source: Dalton Transactions

Journal acronym: DALTON T

Volume: 54

Issue: 21

First page : 8445

Last page: 8451

Number of pages: 7

ISSN: 1477-9226

eISSN: 1477-9234

DOI: https://doi.org/10.1039/d5dt00389j

Web address : https://doi.org/10.1039/d5dt00389j

Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/498608430


Abstract
Photochromic hackmanites, (Na,K)8Al6Si6O24(Cl,S)2, were synthesized with a solid state reaction route using natural nepheline, (Na,K)AlSiO4, as a starting material together with NaCl, KCl and Na2SO4. The hackmanite was obtained using NaCl, whereas with KCl the nepheline reacted only partially. In particular, materials synthesized with NaCl showed a deep photochromic color under UV irradiation and good sensitivity to even low solar UV index values. This suggests that the material is well suited for personal solar UV exposure monitoring.

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Last updated on 2025-31-07 at 07:45