| 摘要 |
<p>The invention relates to methods for producing ultrapure crystals of iron oxide (α-Fe2O3) of micron and submicron sizes using living plants as transporter and initial solution depot for oxide synthesis and can be used in the production of ultrapure crystals of iron oxide for biomedicine - as organotropic magnetic resonance contrast agent, in electrical engineering for magnetic recording, as magnetic thermometers due to paramagnetic properties in a weak magnetic field, as catalysts in pyrotechnic compounds and mineral pigments in various fields of industry, etc.The aim of the present invention is the creation of a low-cost method for producing ultrapure crystals of iron oxide (α-Fe2O3) of micron and submicron sizes.The method includes the maintenance of the stems of living plants in a concentrated solution of ferric chloride for 2…3 days at the room temperature, their heating to the annealing temperature in an open vial for 8…10 hours, annealing at the temperature of 600…650°C for 2…3 hours and slow cooling to the room temperature in disconnected stove regime.The technical result consists in producing ultrapure crystals of iron oxide (α-Fe2O3) of micron and submicron sizes by using cells of living plants as transporter and initial solution depot for compound synthesis.</p> |
