Electrical properties and humidity sensor characteristics of lead hydroxyapatite material
| Autor: | Karin Popa, Iulian Petrila, Ana Maria Catargiu, Florin Tudorache |
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| Rok vydání: | 2014 |
| Předmět: |
Aqueous solution
Materials science Precipitation (chemistry) General Physics and Astronomy Humidity Surfaces and Interfaces General Chemistry Condensed Matter Physics Apatite Surfaces Coatings and Films Sodium salt Catalysis visual_art visual_art.visual_art_medium Composite material Lead (electronics) |
| Zdroj: | Applied Surface Science. 303:175-179 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2014.02.138 |
| Popis: | a b s t r a c t Crystalline lead hydroxyapatite is obtained by direct precipitation from aqueous solution, the method being easy, fast and reproducible. The synthesis route which does not involve sodium salts or sulfates makes the material suitable for applications in catalysis. The electrical characteristics of lead hydroxyap- atite material treated at different temperatures, made us focus on the analysis of the influence of water vapors upon the electrical characteristics. Thus, the electrical response to humidity adsorptive processes of lead hydroxyapatite material suggested us to analyze the material characteristics in terms of its use as a humidity sensor. The hydrophilic properties of lead hydroxyapatite material are reflected especially in high sensitivity and reduced time of response of the humidity sensors but also in long time of recovery, which suggests that Pb10(PO4)6(OH)2 material can be used for humidity sensors specialized in monitoring fluctuating humidity environments. © 2014 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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