Working Paper Article Version 1 This version is not peer-reviewed

Characterization of K6Ta10.8O30 Microrods with Tetragonal Tungsten Bronze-Like Structure Obtained from Tailings from the Penouta Sn-Ta-Nb Deposit

Version 1 : Received: 22 October 2020 / Approved: 23 October 2020 / Online: 23 October 2020 (12:22:54 CEST)

A peer-reviewed article of this Preprint also exists.

Sotillo, B.; Alcaraz, L.; López, F.A.; Fernández, P. Characterization of K6Ta10.8O30 Microrods with Tetragonal Tungsten Bronze-Like Structure Obtained from Tailings from the Penouta Sn-Ta-Nb Deposit. Nanomaterials 2020, 10, 2289. Sotillo, B.; Alcaraz, L.; López, F.A.; Fernández, P. Characterization of K6Ta10.8O30 Microrods with Tetragonal Tungsten Bronze-Like Structure Obtained from Tailings from the Penouta Sn-Ta-Nb Deposit. Nanomaterials 2020, 10, 2289.

Journal reference: Nanomaterials 2020, 10, 2289
DOI: 10.3390/nano10112289

Abstract

In this work, a deep characterization of the properties of K6Ta10.8O30 microrods has been performed. The starting material used to grow the microrods has been recovered from mining tailings coming from the Penouta Sn-Ta-Nb deposit, located in the north of Spain. The recovered material has been submitted to a thermal treatment to grow the microrods. Then, they have been characterized by scanning electron microscopy, X-ray diffraction, micro-Raman and micro-photoluminescence. The results of our study confirm that the K6Ta10.8O30 microrods have a tetragonal tungsten bronze-like crystal structure, which can be useful for ion-batteries and photocatalysis.

Subject Areas

Mining tailings; Tantalum; X-Ray diffraction; Raman spectroscopy; Scanning electron microscopy.

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