Preparation method of nano black phosphorus

Abstract

The invention discloses a preparation method of nano black phosphorus, and belongs to the field of novel materials. A novel technology for synthesizing the nano black phosphorus by a mechanical and physical method is adopted, and the technology is an ultrahigh-energy ball milling method comprising optimization of a ball-hammer type instantaneous high-frequency impact pressure and parameters, atmosphere control, and addition of a modified material, wherein red phosphorus is used as a raw material, a milling tank is vacuumized and filled with argon before ball milling, ball milling is performed for 8-10 hours at an impact frequency of 800-1600 times per minute to obtain crystal black phosphorus with an average size of 100-300 nanometers, and tank unloading, material taking and packaging needs to be completed in a vacuum glove box. According to a demand of oxidation resistance and high conductivity, during preparation of modified nano black phosphorus, a metal or metal alloy or metal oxide or nonmetal material is needed, and a high polymer material is used as a modifying material for grinding after being added with an added amount accounting for 0.1-10%.

Description

technical field

[0001] The invention relates to the field of black phosphorus preparation, in particular to a method for preparing nanometer black phosphorus. Background technique

[0002] In 1914, American scientist Bridgman prepared black phosphorus, the most stable of allotropes of phosphorus, through a high-pressure method. Bridgman also won the Nobel Prize in Physics in 1946, but the reason for the award was to recognize his outstanding contribution in the field of high-pressure physics, and black phosphorus itself did not attract much attention. In the 100 years since the first preparation of this material, there were only about 100 related literatures, with an average of only one paper a year. However, in 2014, the research on black phosphorus developed like a blowout, and many of its unique photoelectric properties were discovered. Among them, Chinese scientists have also made outstanding contributions, such as the research group of Professor Zhang Yuanbo from Fudan...

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