Chemistry:Silver tungstate
From HandWiki
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| IUPAC name
Disilver;dioxido(dioxo)tungsten
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3D model (JSmol)
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| ChemSpider | |
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PubChem CID
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| Properties | |
| Ag2WO4 | |
| Molar mass | 463.57 g mol−1 |
| Hazards | |
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| GHS Signal word | Warning |
| H315, H319, H335 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Silver tungstate is an inorganic tungstate with the chemical formula Ag2WO4. It has been applied in various fields such as photoluminescence, antibacterial action, ozone gas sensors and humidity sensors.[2][3] It is also used in the electronic and chemical industries, and also used in proteomics research.[4]
Phases
Silver tungstate occurs in three polymorphic phases: orthorhombic (α), hexagonal (β) and cubic (γ).[2] α-silver tungstate is thermodynamically stable, while β- and γ-silver tungstate are metastable.[5]
Synthesis
Silver tungstate is synthesised through the following reaction between silver nitrate and sodium tungstate, producing sodium nitrate as a byproduct:[2]
- [math]\ce{ 2AgNO3 + Na2WO4 -> Ag2WO4 + 2NaNO3 }[/math]
References
- ↑ "C&L Inventory". https://echa.europa.eu/information-on-chemicals/cl-inventory-database/-/discli/details/26192.
- ↑ 2.0 2.1 2.2 Sreedevi, A.; Priyanka, K. P.; Babitha, K. K.; Aloysius Sabu, N.; Anu, T. S.; Varghese, T. (2015-09-01). "Chemical synthesis, structural characterization and optical properties of nanophase α-Ag2WO4" (in en). Indian Journal of Physics 89 (9): 889–897. doi:10.1007/s12648-015-0664-1. ISSN 0974-9845. Bibcode: 2015InJPh..89..889S. https://doi.org/10.1007/s12648-015-0664-1.
- ↑ De Santana, Yuri V. B.; Gomes, José Ernane Cardoso; Matos, Leandro; Cruvinel, Guilherme Henrique; Perrin, André; Perrin, Christiane; Andrès, Juan; Varela, José A. et al. (2014-01-01). "Silver Molybdate and Silver Tungstate Nanocomposites with Enhanced Photoluminescence" (in en). Nanomaterials and Nanotechnology 4: 22. doi:10.5772/58923. ISSN 1847-9804. http://journals.sagepub.com/doi/10.5772/58923.
- ↑ "13465-93-5 - Silver tungsten oxide, 99% (metals basis) - Silver tungstate - 39661 - Alfa Aesar". https://www.alfa.com/en/catalog/039661/.
- ↑ Alvarez Roca, Roman; Lemos, Pablo S.; Gracia, Lourdes; Andrés, Juan; Longo, Elson (2016-10-03). "Uncovering the metastable γ-Ag2WO4 phase: a joint experimental and theoretical study". RSC Advances 7 (10): 5610–5620. doi:10.1039/C6RA24692C. Bibcode: 2017RSCAd...7.5610R. https://pubs.rsc.org/en/content/articlepdf/2017/ra/c6ra24692c.
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