Study of Surface Acid-Base Properties Of Gas-Sensitive Metal Oxides
| Autor: | S. S. Nalimova, Valeriy M. Kondrat'ev |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
chemistry.chemical_classification Ethanol Base (chemistry) Inorganic chemistry Oxide 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Metal chemistry.chemical_compound Adsorption X-ray photoelectron spectroscopy chemistry visual_art 0103 physical sciences visual_art.visual_art_medium Molecule 0210 nano-technology Ternary operation |
| Zdroj: | 2020 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus). |
| DOI: | 10.1109/eiconrus49466.2020.9039264 |
| Popis: | Binary (ZnO, Fe 2 O 3 ) and ternary (ZnFe 2 O 4 ) gas-sensitive oxide materials are synthesized, and the correlation between their sensitivity to ethanol vapors and the functional chemical composition of the surface is studied by X-ray photoelectron spectroscopy and adsorption of acid–base indicators. It is found that the sensitivity to ethanol vapors increases with increasing acid sites with pK a = 2.5 and with increasing percentage of surface oxygen of OH/CO 3 /C–O groups. This correlation is caused by the specific interaction between ethanol molecules and hydroxyl groups on the surface of the oxides. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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