Silver tungstate: Difference between revisions
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tungstates, silver compounds |
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|Section2 = {{Chembox Properties |
|Section2 = {{Chembox Properties |
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| Formula = Ag<sub>2</sub>WO<sub>4</sub> |
| Formula = Ag<sub>2</sub>WO<sub>4</sub> |
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| MolarMass = 463.57 g mol<sup> |
| MolarMass = 463.57 g mol<sup>−1</sup>}} |
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| Section7 = {{Chembox Hazards |
| Section7 = {{Chembox Hazards |
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| GHS_ref= <ref>{{cite web |title=C&L Inventory |url=https://echa.europa.eu/information-on-chemicals/cl-inventory-database/-/discli/details/26192 |website=echa.europa.eu}}</ref> |
| GHS_ref= <ref>{{cite web |title=C&L Inventory |url=https://echa.europa.eu/information-on-chemicals/cl-inventory-database/-/discli/details/26192 |website=echa.europa.eu}}</ref> |
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'''Silver tungstate''' is an inorganic [[tungstate]] with the chemical formula Ag<sub>2</sub>WO<sub>4</sub>. It has been applied in various fields such as photoluminescence, antibacterial action, ozone gas sensors and humidity sensors.<ref name="Sreedevi">{{Cite journal | |
'''Silver tungstate''' is an inorganic [[tungstate]] with the chemical formula Ag<sub>2</sub>WO<sub>4</sub>. It has been applied in various fields such as photoluminescence, antibacterial action, ozone gas sensors and humidity sensors.<ref name="Sreedevi">{{Cite journal |last1=Sreedevi |first1=A. |last2=Priyanka |first2=K. P. |last3=Babitha |first3=K. K. |last4=Aloysius Sabu |first4=N. |last5=Anu |first5=T. S. |last6=Varghese |first6=T. |date=2015-09-01 |title=Chemical synthesis, structural characterization and optical properties of nanophase α-Ag<sub>2</sub>WO<sub>4</sub> |url=https://doi.org/10.1007/s12648-015-0664-1 |journal=Indian Journal of Physics |language=en |volume=89 |issue=9 |pages=889–897 |doi=10.1007/s12648-015-0664-1 |bibcode=2015InJPh..89..889S |s2cid=122042870 |issn=0974-9845}}</ref><ref>{{Cite journal |last1=De Santana |first1=Yuri V. B. |last2=Gomes |first2=José Ernane Cardoso |last3=Matos |first3=Leandro |last4=Cruvinel |first4=Guilherme Henrique |last5=Perrin |first5=André |last6=Perrin |first6=Christiane |last7=Andrès |first7=Juan |last8=Varela |first8=José A. |last9=Longo |first9=Elson |date=2014-01-01 |title=Silver Molybdate and Silver Tungstate Nanocomposites with Enhanced Photoluminescence |url=http://journals.sagepub.com/doi/10.5772/58923 |journal=Nanomaterials and Nanotechnology |language=en |volume=4 |pages=22 |doi=10.5772/58923 |hdl=10234/121786 |s2cid=7415517 |issn=1847-9804|hdl-access=free }}</ref> It is also used in the electronic and chemical industries, and also used in [[proteomics]] research.<ref>{{Cite web |title=13465-93-5 - Silver tungsten oxide, 99% (metals basis) - Silver tungstate - 39661 - Alfa Aesar |url=https://www.alfa.com/en/catalog/039661/ |access-date=2022-08-29 |website=www.alfa.com}}</ref> |
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== Phases == |
== Phases == |
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Silver tungstate occurs in three [[Polymorphism (materials science)|polymorphic]] phases: [[Orthorhombic crystal system|orthorhombic]] (α), [[Hexagonal crystal family|hexagonal]] (β) and [[Cubic crystal system|cubic]] (γ).<ref name="Sreedevi" /> α-silver tungstate is thermodynamically stable, while β- and γ-silver tungstate are [[Metastability|metastable]].<ref>{{Cite journal | |
Silver tungstate occurs in three [[Polymorphism (materials science)|polymorphic]] phases: [[Orthorhombic crystal system|orthorhombic]] (α), [[Hexagonal crystal family|hexagonal]] (β) and [[Cubic crystal system|cubic]] (γ).<ref name="Sreedevi" /> α-silver tungstate is thermodynamically stable, while β- and γ-silver tungstate are [[Metastability|metastable]].<ref>{{Cite journal |last1=Alvarez Roca |first1=Roman |last2=Lemos |first2=Pablo S. |last3=Gracia |first3=Lourdes |last4=Andrés |first4=Juan |last5=Longo |first5=Elson |date=2016-10-03 |title=Uncovering the metastable γ-Ag<sub>2</sub>WO<sub>4</sub> phase: a joint experimental and theoretical study |url=https://pubs.rsc.org/en/content/articlepdf/2017/ra/c6ra24692c |journal=[[RSC Advances]] |volume=7 |issue=10 |pages=5610–5620|doi=10.1039/C6RA24692C |bibcode=2017RSCAd...7.5610R |doi-access=free |hdl=10234/167867 |hdl-access=free }}</ref> |
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== Synthesis == |
== Synthesis == |
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Silver tungstate is synthesised through the following reaction:<ref name="Sreedevi" /> |
Silver tungstate is synthesised through the following reaction between [[silver nitrate]] and [[sodium tungstate]], producing [[sodium nitrate]] as a byproduct:<ref name="Sreedevi" /> |
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: <chem>2AgNO3 + Na2WO4 -> Ag2WO4 + 2NaNO3</chem> |
: <chem>2AgNO3 + Na2WO4 -> Ag2WO4 + 2NaNO3</chem> |
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{{reflist}} |
{{reflist}} |
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{{Silver compounds}} |
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{{Tungstates}} |
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[[Category:Silver compounds]] |
[[Category:Silver compounds]] |
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[[Category:Tungstates]] |
[[Category:Tungstates]] |
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Latest revision as of 19:23, 30 August 2024
Names | |
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IUPAC name
Disilver;dioxido(dioxo)tungsten
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Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.033.357 |
EC Number |
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PubChem CID
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Properties | |
Ag2WO4 | |
Molar mass | 463.57 g mol−1 |
Hazards | |
GHS labelling:[1] | |
Warning | |
H315, H319, H335 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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
[edit]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
[edit]Silver tungstate is synthesised through the following reaction between silver nitrate and sodium tungstate, producing sodium nitrate as a byproduct:[2]
References
[edit]- ^ "C&L Inventory". echa.europa.eu.
- ^ a b c 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". Indian Journal of Physics. 89 (9): 889–897. Bibcode:2015InJPh..89..889S. doi:10.1007/s12648-015-0664-1. ISSN 0974-9845. S2CID 122042870.
- ^ De Santana, Yuri V. B.; Gomes, José Ernane Cardoso; Matos, Leandro; Cruvinel, Guilherme Henrique; Perrin, André; Perrin, Christiane; Andrès, Juan; Varela, José A.; Longo, Elson (2014-01-01). "Silver Molybdate and Silver Tungstate Nanocomposites with Enhanced Photoluminescence". Nanomaterials and Nanotechnology. 4: 22. doi:10.5772/58923. hdl:10234/121786. ISSN 1847-9804. S2CID 7415517.
- ^ "13465-93-5 - Silver tungsten oxide, 99% (metals basis) - Silver tungstate - 39661 - Alfa Aesar". www.alfa.com. Retrieved 2022-08-29.
- ^ 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. Bibcode:2017RSCAd...7.5610R. doi:10.1039/C6RA24692C. hdl:10234/167867.