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Thermal and physical properties of ZrO2–AlO(OH) nanopowders synthesised by microwave hydrothermal method
Abstract
Industrially relevant nanopowder was synthesised by microwave hydrothermal synthesis to obtain well-controlled composition (ZrO2–AlO(OH) system) which was found to determine a number of physical and thermal characteristics. This study reports variation of particle size, density, specific surface area (SSABET), as well as thermal behaviour of nanopowder mixtures of ZrO2–AlO(OH) in the whole range of compositions. It was found that the onset temperature (Ton) of physically and chemically bounded water desorption depends on the Al3+/or AlO(OH) content. The lower content of Al3+ in the ZrO2–AlO(OH) system, the higher Ton of physically bound water desorption. There are three distinct temperature regions for water decomposition for nanomaterials investigated in air (at approximately 50, 250 and 450 °C). These temperature ranges depend on particle size and chemical composition of ZrO2–AlO(OH) nanopowders. Materials were divided into three groups characterised by different properties: (1) ZrO2 with 2–12% of Al3+, where particle sizes are from 4 to 8 nm, (2) ZrO2 with 30–67% of AlO(OH), where particle sizes are from 10 to 13 nm, and (3) ZrO2 with 80–99% of AlO(OH), where particle sizes are from 13 to 23 nm. AlO(OH) content determines thermal and physico-chemical properties of synthesised ZrO2–AlO(OH) nanopowders.
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Authors (7)
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Iwona Koltsov dr inż.
- Instytut Wysokich Ciśnień Polskiej Akademii Nauk
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Anna Rogowska
- Instytut Wysokich Ciśnień Polskiej Akademii Nauk
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Jan Mizeracki
- Instytut Wysokich Ciśnień Polskiej Akademii Nauk
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Maria Malysa
- Instytut Wysokich Ciśnień Polskiej Akademii Nauk
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Giora Kimmel
- Ben-Gurion University of the Negev
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Full text
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- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1007/s10973-017-6780-8
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
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JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
no. 131,
pages 2273 - 2284,
ISSN: 1388-6150 - Language:
- English
- Publication year:
- 2018
- Bibliographic description:
- Koltsov I., Prześniak-Welenc M., Wojnarowicz J., Rogowska A., Mizeracki J., Malysa M., Kimmel G.: Thermal and physical properties of ZrO2–AlO(OH) nanopowders synthesised by microwave hydrothermal method// JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY. -Vol. 131, iss. 3 (2018), s.2273-2284
- DOI:
- Digital Object Identifier (open in new tab) 10.1007/s10973-017-6780-8
- Verified by:
- Gdańsk University of Technology
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