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ID 50642
creator
Sakata, Takuya
Yoshiyuki, Risa
Okada, Ryoki
Urushidani, Sohta
Koyama, Kyohei
Masubuchi, Yuji
abstract
A facile method was successfully developed to prepare strontium–tantalum perovskite oxynitride, SrTaO2N, and its solid solutions. Urea was employed as a solid nitriding agent to eliminate the use of toxic NH3 gas. In addition, utilization of sol–gel-derived Ta2O5 gel as a Ta precursor allowed for completion of nitridation within a shorter period and at a lower calcination temperature compared with the conventional ammonolysis process. Optimization of the reaction conditions, such as the urea content, allowed for the production of solid solutions of SrTaO2N and Sr1.4Ta0.6O2.9. The products exhibited optical absorption and chromatic colors because of the narrower band gaps of oxynitrides compared with those of oxides. The O/N ratios of the solid solutions were easily adjusted by varying the amount of urea in the mixture of precursors. As a result, the colors of the products ranged from yellow to brown. The nitridation process and products developed in this study are interesting environmentally benign alternatives to conventional inorganic pigments.
description
This work was supported by JSPS KAKENHI (Grant Numbers JP16H06439, JP17H03392, JP17H05483, JP18K19132, JP19H04699, and JP20H02439).
journal title
Inorganic Chemistry
volume
Volume 60
issue
Issue 7
start page
4852
end page
4859
date of issued
2021-02-25
publisher
American Chemical Society
issn
0020-1669
1520-510X
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
This document is the Accepted Manuscript version of a Published Work that appeared in final form in Inorganic Chemistry, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.inorgchem.0c03758.
This is not the published version. Please cite only the published version. この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
relation url
department
Graduate School of Advanced Science and Engineering
note
The full-text file will be made open to the public on 25 Feb 2022 in accordance with publisher's 'Terms and Conditions for Self-Archiving'



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