Abstract
The sol-gel synthesis method is an attractive technology for the fabrication of ceramic films due to its preparation simplicity and ease of varying the metal composition. However, this technique presents some limitations in relation to the film thickness. Notably, when the film thickness exceeds the critical limit, large tensile stresses occur, resulting in a cracked morphology. In this study, a secondary crystal growth method was introduced as a post-treatment process for Mg/Al hydrotalcite-based films synthesized by the sol-gel method, which typically present a cracked morphology. The cracked hydrotalcite-based film was hydrothermally treated for the secondary growth of hydrotalcite crystals. In the resulting film, hydrotalcite grew with a vertical orientation, and the gaps formed during the sol-gel synthesis were filled with hydrotalcite after the crystal growth. The secondary crystal growth method provides a new solution for cracked ceramic films synthesized by the sol-gel method.
| Original language | English |
|---|---|
| Pages (from-to) | 4206-4210 |
| Number of pages | 5 |
| Journal | Inorganic Chemistry |
| Volume | 55 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2016 May 2 |
Bibliographical note
Funding Information:Efficiency and Resources R&D Program (2011201020004A) and the Human Resources Development Program (20134010200600) of the Korea Institute of Energy TechnologyEvaluation and Planning (KETEP), funded by the Korean Governments Ministry of Trade, Industry & Energy. The authors also acknowledge the Korea Research Council of Fundamental Science and Technology (KRCF) for the additional support received from the National Agenda Program (NAP).
Publisher Copyright:
© 2016 American Chemical Society.
Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry