The invention discloses a method for rapidly preparing high-quality two-dimensional
black phosphorus crystals through
seed crystal induction. The method comprises the following steps: a red phosphorusraw material, a catalyst and a
transport agent are weighed and are placed at the bottom (a
raw material end and a hot end) of a single-head sealed
quartz tube in an
inert atmosphere, the internal ofthe single-head sealed
quartz tube is separated by using a porous
gasket, a
black phosphorus seed crystal is weighed and is placed at the top (a nucleating end and a cold end) of the single-head sealed
quartz tube, and the above reaction raw materials are sealed in the quartz tube by using a
vacuum tube sealing
system; and then the quartz tube is heated through optimized programmed heating and cooling, and the high-purity and high-quality two-dimensional
black phosphorus crystal is finally prepared after the reaction is finished. Compared with a traditional preparation method without using
crystal seeds, the method of the invention has the advantages of significant reduction of the
reaction temperature and the reaction time in the synthesis process, reduction of the
energy consumption, effective reduction of the introduction amounts of the catalyst and the
transport agent required by the reaction, and cost saving. The black
phosphorus crystals synthesized by the method have the advantages of few impurities, high purity, good quality, and facilitation of industrial large-scale preparation of the black
phosphorus crystals.