Bismuth(III) sulfide lump
Bismuth sulfide
CAS: 1345-07-9
Molecular Formula: Bi2S3
Bismuth(III) sulfide lump - Names and Identifiers
| Name | Bismuth sulfide |
| Synonyms | Bismuth sulfide bismuthous sulfide bismuth trisul fide Bismuth(III) sulfide dibismuth trisulphide Bismuth(III) sulfide lump |
| CAS | 1345-07-9 |
| EINECS | 215-716-0 |
Bismuth(III) sulfide lump - Physico-chemical Properties
| Molecular Formula | Bi2S3 |
| Molar Mass | 514.16 |
| Density | 7.7 g/mL at 25 °C(lit.) |
| Melting Point | 685°C (dec.) |
| Water Solubility | Insoluble in water. Soluble in acids. |
| Appearance | Lump |
| Specific Gravity | 7.7 |
| Color | Gray |
| Solubility Product Constant(Ksp) | pKsp: 97 |
| Merck | 13,1288 |
| Storage Condition | Room Temprature |
| MDL | MFCD00014204 |
| Use | Brief introduction Bismuth sulfide is brown yellow powder or crystal with 7.39 specific gravity. Decomposition at 685 ℃. Insoluble in water, ethyl acetate, soluble in nitric acid, hydrochloric acid. |
Bismuth(III) sulfide lump - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 2 |
| RTECS | EB3105000 |
| TSCA | Yes |
Bismuth(III) sulfide lump - Uses and synthesis methods
structural characteristics
Bi2S3 has a special layered structure and weak bonds between layered units, which leads to the anisotropy and nucleus growth of Bi2S3 in solvent thermal synthesis and hydrothermal synthesis into tiny flake crystals. Under relatively low temperature conditions, the crystal growth rate of the reactants is faster than the nucleation rate, which facilitates the growth of Bi2S3 into nano-flakes in solvents with high viscosity and high surface tension. The powders synthesized in solvent distilled water and distilled water-ethylene glycol (2:1) with high viscosity and high surface tension are beneficial to the formation of nanoflake structures. However, the surface tension energy and viscosity between Bi2S3 and solvent DMF are relatively low, which is conducive to strengthening the chemical force between S-Bi bonds in the chain. According to the PBC theory of crystal growth, the growth of Bi2S3 crystal has the fastest growth rate along the direction of the bond chain with the strongest force, which eventually leads to the formation of Bi2S3 nanorods.
application
Bismuth sulfide, as an important semiconductor material, has potential application value in thermoelectric, electronic and optoelectronic devices and infrared spectroscopy. The band gap energy of bismuth sulfide at room temperature is 1.33eV, which can be used to make photoelectric converters and is widely used in thermoelectric cooling processes. Nanometer bismuth sulfide can not only blue shift the ultraviolet visible absorption wavelength and fluorescence emission wavelength, but also produce nonlinear optical response and enhance the redox ability of nanoparticles. At the same time, it also has excellent photoelectric catalytic performance and has broad application prospects in luminescent materials, nonlinear optical materials, photocatalytic materials, etc.
Solubility in water (g/100ml)
Dissolved grams per 100 ml of water:
1.561×10-20/20℃
Last Update：2024-04-10 22:29:15
Bismuth(III) sulfide lump - Nature
| EPA chemical information | Bismuth sulfide (Bi2S3) (1345-07-9) |
Last Update：2024-04-10 22:29:15
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