Impact of stirring time and the corresponding growth mechanism in the solvothermal synthesis of WO3 nanostructures

Changhyun Jin, Jong Chan Lim, Min Young Kim, Myung Sik Choi, Sang Il Kim, Seung Hyub Baek, Sun Jae Kim, Seung Yong Lee, Hyun Sik Kim, Kyu Hyoung Lee

Research output: Contribution to journalArticlepeer-review


WO3 nanostructures with different morphologies and dimensions were fabricated via solvothermal synthesis by adjusting the stirring time of the precursor solution. Ethanol-based solutions of the WCl6 precursor with various colors (dark green, yellow, white, blue, and blue-black) were prepared, and this triggered a significant change in the growth behavior during the evolution of WO3 nanostructures. Controlling the initial state of the precursors in solution enabled sequential nucleation and growth which resulted in the production of zero-to-three-dimensional nanostructures including nanoparticles, a mixture of nanosheets and nanoparticles, jointed-nanosheets, and three-dimensionally clustered jointed-nanosheets. The crystallographic characteristics (preferred orientation along the (002) plane) and the concentration of surface oxygen vacancies were also controllable, suggesting the formation of nanostructures with tuneable surface reactivity. Differing NO2 sensing performances were observed because of the variation in configurations of the WO3 nanostructures.

Original languageEnglish
Pages (from-to)779-787
Number of pages9
JournalJournal of Asian Ceramic Societies
Issue number4
Publication statusPublished - 2022

Bibliographical note

Funding Information:
This study was supported by Samsung Electronics Co., Ltd. (IO201216-08204-01). This research was also supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Science and ICT (2022R1A2C2005210) and the Ministry of Education (2019R1A6A1A11055660) and by the Technology Innovation Program (“20013621”, Center for Super Critical Material Industrial Technology) funded by the Ministry of Trade, Industry & Energy (MOTIE, South Korea). C. Jin and S.Y. Lee were supported by the Korea Initiative for fostering University of Research and Innovation (KIURI) Program of the National Research Foundation (NRF) funded by the Korean government (MSIT) (NRF-2020M3H1A1077207).

Publisher Copyright:
© 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group on behalf of The Korean Ceramic Society and The Ceramic Society of Japan.

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites


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