Preparation method of black phosphorus catalyst

[0012] According to the mass ratio of 3:1, mix tin triphosphide and tin diiodide and add them into one end of the quartz tube, put the quartz tube into a tube furnace with two temperature zones, under vacuum conditions, in 3h The temperature at one end of the quartz tube where the raw material is placed is raised to 500°C, and the temperature at the other end of the quartz tube is raised to 490°C. After 8 hours of heat preservation, the black phosphorus catalyst Sn is obtained at the other end of the quartz tube. 24 P 19.3 I 8 product( figure 1 ).

[0014] According to the ratio of mass ratio of 4:1, mix tin phosphide and tin tetraiodide evenly and add them to one end of the quartz tube, put the quartz tube into a tube furnace with two temperature zones, under vacuum atmosphere, in 5h The temperature at one end of the quartz tube where the raw material is placed is raised to 530°C, and the temperature at the other end of the quartz tube is raised to 490°C. After 7 hours of heat preservation, the black phosphorus catalyst Sn is obtained at the other end of the quartz tube. 24 P 19.3 I 8 product.

[0016] Mix tin phosphide and tin tetraiodide in a mass ratio of 2:1 and add them to one end of the quartz tube, put the quartz tube into a double-temperature zone tube furnace, and 2 Under these conditions, within 4 hours, the temperature at the end of the quartz tube where the raw material is placed is raised to 540 ° C, and the temperature at the other end of the quartz tube is raised to 450 ° C. After 9 hours of heat preservation, the black phosphorus catalyst Sn 24 P 19.3 I 8 product; XRD characterization analysis was carried out on the product; the results are shown in figure 2 , it can be seen from the figure that the XRD diffraction peak of the sample is consistent with that of the black phosphorus catalyst Sn 24 P 19.3 I 8 Corresponding to the standard card (PDF#52-0212), it proves that this method can prepare black phosphorus catalyst Sn 24 P 19.3 I 8 .