A kind of preparation method of nitrogen-doped lithium partial indium oxide photocatalytic material and its products
A photocatalytic material, the technology of lithium metaindium oxide, which is applied in the field of photocatalysis, can solve the problems of non-metallic elements doping lithium metaindium oxide, etc., and achieve the effect of low heat treatment temperature and simple synthesis process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0034] The preparation mechanism of nitrogen-doped lithium metaindium oxide is that the nitrogen source decomposes at a certain temperature to generate ammonia (ammonium ions) and form a reducing atmosphere composed of various mixed gases. In this reducing atmosphere, acidic lithium metaindium oxide (isoelectric point is 4.9) can easily absorb basic ammonia (ammonium ions) and make ammonia atoms (ions) enter in the form of interstitial or substitution under high temperature. The crystal lattice of lithium metaindium oxide. Theoretical calculations show that the valence band of lithium indium oxide is composed of O 2p orbitals, and nitrogen atoms (ions) enter the lattice of lithium indium oxide to form a hybrid energy level formed by O 2p and N 1s, which is located in the indium partial indium oxide Above the valence band of lithium indium oxide, thereby reducing the forbidden band width of lithium metaindium oxide. Under light (wavelength greater than 380 nanometers) nitrogen...
Embodiment 1
[0038] Mix 2.7764 grams of indium oxide and 1.4774 grams of lithium carbonate, grind them evenly, place them in a crucible, heat them at 800°C for 4 hours, cool them naturally to room temperature, and wash them with a mixture of water and absolute ethanol with a volume ratio of 1:9 6 times, after drying at 80°C for 12 hours, an undoped lithium metaindate precursor was obtained. Take 1.5584 g of lithium metaindium oxide precursor and 0.7792 g of urea and mix them, and ball mill the mixture for 8 hours at a speed of 400 rpm, so that the precursor and nitrogen source are evenly mixed. Next, the mixture was placed in a muffle furnace to raise the temperature to 200°C at a heating rate of 5°C / min, and kept at this temperature for 3h. After naturally cooling to room temperature, the obtained product was washed with a mixture of water and absolute ethanol for 6 times, and dried at 80° C. for 12 hours to obtain a nitrogen-doped lithium metaindate photocatalytic material.
[0039] fi...
Embodiment 2
[0043] Mix 3.0083 grams of indium nitrate and 2.0865 grams of lithium nitrate and grind them evenly, then place them in a crucible, heat-treat at 900°C for 3 hours, cool naturally to room temperature, and wash with a mixture of water and absolute ethanol with a volume ratio of 1:9 6 times, after drying at 80°C for 12 hours, an undoped lithium metaindate precursor was obtained. Take 1.5584 g of lithium metaindium oxide precursor and mix with 0.7792 g of melamine, and ball mill the mixture for 6 h at a speed of 400 rpm, so that the precursor and nitrogen source are evenly mixed. Next, the mixture was placed in a muffle furnace to raise the temperature to 200°C at a rate of 2°C / min and keep it warm for 2h. After naturally cooling to room temperature, the obtained product was washed with a mixture of water and absolute ethanol for 6 times, and dried at 80° C. for 12 hours to obtain a nitrogen-doped lithium metaindate photocatalytic material.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More