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Gallium oxide
Inorganic compound Ga2O3 has the chemical formula. Also called gallium trioxide. It’s a semiconductor with a large bandgap (Eg=4.9eV) that has good electrical conductivity, light-emitting properties, and can be used to detect O2.
Gallium (III), namely gallium trioxide, is the stablest of all gallium oxides. It can be made by heating metal gallium to oxidize or by calcining galium nitrates, gallium hydroxides, and certain gallium compound at 200-250degC.
Ga2O3 is capable of reacting with a wide range of metal oxides. The crystal structure has been determined for gallate M(I),GaO2, obtained from alkali-metal oxide reactions (above 400). The same as Al2O3 and Ln2O3, this material can be obtained by a reaction between MgO, CuO, ZnO and CoO Spinel Type M(II).
2. This is the method to prepare high purity galium oxide. Use high-purity Ga metal as anode. Dissolve it in a H2SO4 5%-20% solution. Add ammonia, cool and crystallize Ga (NH4)(SO4)2, before drying it at 105degC. When there is excess oxygen in the air, burning at 800degC and for 2h will yield a 99.99%-99.9999% pure product.
3. The solution should be concentrated until it is close to crystallization. When this happens, the solution can be transferred to a large evaporating plate and dried. Burn the Ga(NO3)3 that has been evaporated in a muffle-furnace. The temperature must be maintained at 550°C for 5 hours. After cooling, 1.2kg of highly pure gallium oxide can be obtained.
Tech Co., Ltd. is a professional The powder of gallium oxide Over 12 years in research and development of chemical products. You can contact us for high quality galium oxide powder. Contact us Send an inquiry.
The Properties Of Gallium Oxide
Gallium oxide consists of white triangular crystals. Although it is not soluble, it is easily soluble with alkali metal hydroxides, dilute acids, and hot acid solutions.Gallium (III), namely gallium trioxide, is the stablest of all gallium oxides. It can be made by heating metal gallium to oxidize or by calcining galium nitrates, gallium hydroxides, and certain gallium compound at 200-250degC.
Ga2O3 is capable of reacting with a wide range of metal oxides. The crystal structure has been determined for gallate M(I),GaO2, obtained from alkali-metal oxide reactions (above 400). The same as Al2O3 and Ln2O3, this material can be obtained by a reaction between MgO, CuO, ZnO and CoO Spinel Type M(II).
The preparation of Gallium Oxide
1. Add a highly-concentrated hot aqueous NaHCO3 to a hot solution of the gallium trichloride GaCl3, then boil the mixture until all gallium hydroxides have precipitated. After washing the precipitate in hot water, calcinate it at 600degC until no Cl- remains. NH4Cl will react with Ga2O3 when it reaches 250degC, generating volatile GaCl3.2. This is the method to prepare high purity galium oxide. Use high-purity Ga metal as anode. Dissolve it in a H2SO4 5%-20% solution. Add ammonia, cool and crystallize Ga (NH4)(SO4)2, before drying it at 105degC. When there is excess oxygen in the air, burning at 800degC and for 2h will yield a 99.99%-99.9999% pure product.
3. The solution should be concentrated until it is close to crystallization. When this happens, the solution can be transferred to a large evaporating plate and dried. Burn the Ga(NO3)3 that has been evaporated in a muffle-furnace. The temperature must be maintained at 550°C for 5 hours. After cooling, 1.2kg of highly pure gallium oxide can be obtained.
Tech Co., Ltd. is a professional The powder of gallium oxide Over 12 years in research and development of chemical products. You can contact us for high quality galium oxide powder. Contact us Send an inquiry.