Fabrication of K2Ta2O6 films by hydrothermal method and their optical property

Atsushi Saiki; Takashi Hashizume

doi:10.1002/9781118889770.ch12

Fabrication of K₂Ta₂O₆ films by hydrothermal method and their optical property

Atsushi Saiki, Takashi Hashizume

Materials Design and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Abstract

Ta is one of stable and noble metals, and hard to be prepared complex oxides at low temperature. In this study K₂Ta₂O₆ thin films were fabricated on the Ta sputtered glass substrates by the hydrothermal method under relatively low temperature condition (393K, 12-72h). The transparency of deposited film increased after hydrothermal treatment due to the generation of K₂Ta₂O₆ from Ta metal. Fabricated K₂Ta₂O₆ films showed the pyrochlore type structure by XRD investigation. Optical properties of the films were investigated by the decomposition reaction of methylene-blue under the ultraviolet ray irradiation. About a 100 nm thick film of pyrochlore type K₂Ta₂O₆ was fabricated when the sputtering time was 300 s, and it indicated photo-catalyst property.

Original language	English
Title of host publication	Design, Development, and Applications of Structural Ceramics, Composites, and Nanomaterials
Publisher	wiley
Pages	119-125
Number of pages	7
ISBN (Electronic)	9781118889770
ISBN (Print)	9781118770948
DOIs	https://doi.org/10.1002/9781118889770.ch12
State	Published - 2014/03/03

Keywords

Decomposition reaction
Film deposition
Hydrothermal method
Thin films
Ultraviolet ray irradiation

ASJC Scopus subject areas

General Engineering
General Materials Science
General Chemical Engineering

Access to Document

10.1002/9781118889770.ch12

Cite this

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abstract = "Ta is one of stable and noble metals, and hard to be prepared complex oxides at low temperature. In this study K2Ta2O6 thin films were fabricated on the Ta sputtered glass substrates by the hydrothermal method under relatively low temperature condition (393K, 12-72h). The transparency of deposited film increased after hydrothermal treatment due to the generation of K2Ta2O6 from Ta metal. Fabricated K2Ta2O6 films showed the pyrochlore type structure by XRD investigation. Optical properties of the films were investigated by the decomposition reaction of methylene-blue under the ultraviolet ray irradiation. About a 100 nm thick film of pyrochlore type K2Ta2O6 was fabricated when the sputtering time was 300 s, and it indicated photo-catalyst property.",

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