Crystal red phosphorus nanowire and preparation method thereof

Abstract

The invention discloses a crystal red phosphorus nanowire and a preparation method thereof, belonging to the technical field of red phosphorus preparation. The preparation method comprises the following steps: with red phosphorus, iodine and a tin elementary substance as raw materials, controlling a pressure value to be 1.0-5.3 MPa under a vacuum sealing condition, then conducting programmed heating to 612-628 DEG C, carrying out heat treatment, and then cooling to room temperature by sections to obtain the crystal red phosphorus nanowire. According to the method, red phosphorus, iodine and tin are used as raw materials; when the pressure is controlled to be 1.0-5.3 MPa, the instability of crystallization kinetics of the red phosphorus is reduced, the effect of a mineralizer is not enough to reach a lower energy state, and only the crystal red phosphorus nanowire can be formed; and the ultra-long crystal red phosphorus nanowire is obtained, and meanwhile, a foundation is laid for researching a one-dimensional nanomaterial.

Description

technical field [0001] The invention belongs to the technical field of red phosphorus preparation, in particular to a crystalline red phosphorus nanowire and a preparation method thereof. Background technique [0002] As an important class of two-dimensional materials, phosphorus has unique atomic structure and properties. Two-dimensional phosphorus materials including black phosphorus and crystalline red phosphorus nanowires have great potential in optoelectronics and electrocatalysis. Unlike nanosheets with larger lateral dimensions, because nanoribbons have a stronger size confinement effect than ordinary nanosheets, they often have new electronic structures, directional transport properties, enhanced anisotropic physical properties, and specific edge effects. New applications are generated in optoelectronic devices and energy conversion. However, such 2D phosphorus materials are difficult to produce on a large scale, hindering the development of 2D phosphorus nanobelts....

AI Technical Summary

Problems solved by technology

However, such 2D phosphorus materials are difficult to produce on a large scale, hindering the development of 2D phosphorus nanobelts.

So far, the synthesis of crystalline red phosphorus nanowires by low-temperature chemical vapor transfer method is too time-consuming and not conducive to large-scale preparation.

Images