Usuário(a):Laeciosc/Silver tungstate

Silver tungstate Alerta sobre risco à saúde
Outros nomes	Disilver tungstate
Identificadores
Número CAS	13765-74-7
PubChem	22045798
ChemSpider	????
SMILES	[Ag+].[Ag+].[O-][W]([O-])(=O)=O
InChI	1Ag.W.4O/q2*+1;;;;2*-1/r2Ag2.WO4/c;;2-1(3,4)5/q2*+1;-2
Propriedades
Fórmula molecular	Ag2WO4
Massa molar	463.57 g/mol
Aparência	beige crystals
Densidade	6.18 g/cm3, solid
Ponto de fusão	620 °C, 893 K, 1148 °F
Solubilidade em água	slightly soluble
Estrutura
Estrutura cristalina	orthorhombic, hexagonal or cubic
Exceto onde denotado, os dados referem-se a materiais sob condições normais de temperatura e pressão Referências e avisos gerais sobre esta caixa. Alerta sobre risco à saúde.

Silver tungstate Silver tungstate (Ag₂WO₄) is a chemical compound with light beige or light brown colors depending on the synthesis type [[1]]. Its crystals present three types of electronic structures, depending on the concentration of reactants starting or precursors, temperature, or pH of the synthesis. Moreover, the synthesis method can influence the type of facets shape or growth of new crystals forms. [[2,],3,4,5].

The three polymorphs for Ag₂WO₄ crystals are designed as alpha (α) for the orthorhombic structure with space group (Pn2n), beta (β) for the hexagonal structure with space group P6₃/m, and gamma (γ) for the cubic structure with space group Fd3m. Among the electronic structures mentioned above, heterogeneous photocatalysis using α- or β-Ag₂WO₄ crystals as a catalyst has shown significant potential for the treatment of polluted water with different organic/textile dyes or aromatic organic compounds, such as methyl blue, Rhodamine B, methyl orange, phenol, reactive orange 86, and reactive brilliant red. Basically, photocatalysis is a physical-chemical process based on the acceleration of a photoreaction in the presence of a semiconductor catalyst [[6]].

Referências: [1] L.S. Cavalcante, M.A.P. Almeida, W. Avansi Jr., R.L. Tranquilin, E. Longo, N.C. Batista, V.R. Mastelaro, M Siu Li, Inorg. Chem. 51 (2012) pp. 10675–10687. [2]