Synthesis of hydrated KTaWO6 nanoparticles and Sn(II) incorporation for visible light absorption

Titelangaben

Weiß, Morten ; Marschall, Roland:
Synthesis of hydrated KTaWO6 nanoparticles and Sn(II) incorporation for visible light absorption.
In: Nanoscale. Bd. 10 (2018) Heft 20 . - S. 9691-9697.
ISSN 2040-3372
DOI: https://doi.org/10.1039/c8nr01889h

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Abstract

The defect-pyrochlore stuctured semiconductor KTaWO6 has been prepared via hydrothermal synthesis, resulting in single-crystalline nanoparticles with adjustable crystallite size between 15 and 24 nm. With subsequent ion-exhange of K with Sn(II) the band gap of this complex semiconductor can be reduced by 1.3 eV. We show that the ion-exchange is greatly facilitated by the incorporation of water into the crystal lattice.