Bismuth(III) oxide is perhaps the most important compound of bismuth in industry

Overview of bismuth oxide Bi2O3

Bismuth trioxide Chemical formula Bi2O3. The molecular weight is 465.96. Due to burning at different temperatures, three variants can be produced. α-body: yellow heavy powder or monoclinic crystals, melting point 820℃, relative density 8.9, refractive index 1.91. It transforms into γ-body at 860℃. β-body: gray-black cubic crystal with a relative density of 8.20, which transforms into α-body at 704℃. γ-body: heavy light lemon-yellow powder, belonging to tetragonal crystal system, melting point 860℃, relative density 8.55, turning into yellowish-brown when melting, still yellow when cooled, melting under intense red heat, and condensing into crystal after cooling Lumps. All three are insoluble in water but soluble in ethanol and strong acid.

Bismuth oxide (Bi2O3) is an important metal oxide semiconductor because it has excellent optical and electrical properties such as wide bandgap, high refractive index, high dielectric constant and good photoconductivity, so it has received extensive attention.

Bismuth trioxide (Bi2O3) is the prevalent commercial oxide of bismuth. A precursor to the preparation of other compounds of bismuth, including the chemical reagents, bismuth trioxide has specialized uses in optical glass, flame-retardant paper, and, increasingly, in glaze formulations where it substitutes for lead oxides. In the last decade, bismuth trioxide has also become a key ingredient in flux formulations used by mineral analysts in fire assaying. The production of bismuth trioxide generally begins with the minor metal bismuth.

It is naturally found as the minerals bismuth iron ore (monoclinic) and sphalerite (tetragonal, much rarer), but it is usually obtained as a by-product of copper and lead ore smelting. Bismuth trioxide Bi2O3 is usually used to produce "dragon eggs" in fireworks, instead of red lead. Dioxide can be prepared by igniting bismuth hydroxide.Bismuth trioxid eBi2O3 can also be obtained by heating bismuth bicarbonate at a temperature of about 4000. Atmospheric carbon dioxide or CO2 dissolved in water easily reacts with Bi2O3 to produce bismuth subcarbonate. Bismuth oxide is considered to be an alkaline oxide, which explains the high reactivity with CO2. However, when acidic cations such as Si(IV) are introduced into the structure of bismuth oxide, no reaction with CO2 occurs. Bismuth(III)oxide Bi2O3 reacts with a mixture of concentrated aqueous sodium hydroxide and bromine or a mixture of aqueous potassium hydroxide and bromine to form sodium bismuth or potassium, respectively.

Applications of bismuth oxide Bi2O3

Bismuth trioxide Bi2O3 has been widely used in many fields. As a visible-light catalyst, it plays a very important role in the degradation of organic pollutants.

The main applications of bismuth oxide nanoparticles are electrochemical applications, such as in the electrolyte or cathode of solid oxide fuel cells (SOFC), in biomedicine and cancer imaging, and in other photoconductive properties in thin films.

Bismuth oxide Bi2O3 is considered an interesting material due to its dielectric properties and has been used in applications such as optical coatings, metal-insulator-semiconductor capacitors, and microwave integrated circuits.

Bismuth oxide Bi2O3 is occasionally used in tooth materials to make it more opaque to X-rays than the surrounding tooth structure. In particular, bismuth (III) oxide has been used in hydraulic Portland cement (HSC), initially accounting for 10 to 20% by mass. "MTA" (trade name, stands for chemically meaningless "trioxide trioxide aggregate"). Mainly a mixture of calcium di- and tri-silicate powders. This type of HSC is used for dental treatment, such as: eradication, apexectomy, pulp gland, pulpotomy, pulp regeneration, internal repair of iatrogenic perforations, repair of resorption perforations, root canal sealing and obstruction . When mixed with water, MTA becomes a hard filling material. Some resin-based materials also include HSC with bismuth oxide. Bismuth oxide is said to be problematic because it is said that bismuth oxide is not inert at high pH values, especially it slows down the condensation of HSC, and over time, due to exposure to light or other possible reactions with it The material that will fade has been used in dental treatments, such as sodium hypochlorite.

 Bismuth oxide Bi2O3 price

Bismuth oxide Bi2O3 price will vary randomly with the production cost, transportation cost, international situation, exchange rate, and market supply and demand of bismuth oxide Bi2O3. Tanki New Materials Co.,Ltd Aims to help All industries and Chemical Wholesalers to find high quality, cheap price Nanomaterials and chemicals by providing turn-key customize manufacturing services. If you are looking for bismuth oxide Bi2O3, please feel free to send an inquiry for the latest price of bismuth oxide Bi2O3.

 Bismuth oxide Bi2O3 supplier

As a global bismuth oxide Bi2O3 supplier, Tanki New Materials Co.,Ltd has rich experiences in the properties, applications, and cost-effective manufacturing of advanced and engineered materials. The company has successfully developed a series of powder materials (including oxides, carbides, nitrides, single metal, etc.), high-purity targets, functional ceramics, and structural devices, OEM service is available.

 More information about bismuth oxide