A constant-temperature large-scale preparing method of belt-shaped black phosphorus
A large-scale preparation and strip-shaped technology, which is applied in the field of constant temperature and large-scale preparation of strip-shaped black phosphorus, can solve the problems of inability to achieve large-scale mass production, the limitation of black phosphorus production, and the increase of preparation cost, and achieves improved productivity and surface area. Smooth, easy-to-use effects
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Embodiment 1
[0015] Tin, high-purity red phosphorus, and iodine are mixed according to the ratio (mass ratio) of tin: red phosphorus: iodine=0.6:20:0.1, and then put into a quartz tube and directly seal the tube; then put the sealed quartz tube into a horse boiling furnace , the number of quartz tubes to be put in depends on the volume of the horse boiling furnace; set the reaction time, then raise the temperature to 650°C, keep it for 2h, then cool it down to 300°C, keep it for 2h, and finally cool down slowly to room temperature (10h). The resulting strip-shaped black phosphorus is evenly distributed in the quartz tube, such as figure 1 shown.
[0016] The resulting product is a black ribbon block, figure 2 Its XRD figure, its SEM such as image 3 As shown, it can be seen that the obtained product is black phosphorus. And it is measured that the mass of the obtained black phosphorus is about 97% of the mass of the red phosphorus in the raw material.
[0017] Select the resulting str...
Embodiment 2
[0018] Tin, high-purity red phosphorus, and iodine are mixed according to the ratio of tin: red phosphorus: iodine=1:18:0.4, then put into the quartz tube and directly seal the tube; then put the sealed quartz tube into the horse boiling furnace, the number of quartz tubes Depends on the volume of the horse boiler; set the reaction time, then raise the temperature to 750°C, keep it warm for 5h, then cool down to 400°C, keep warm for 5h, and finally cool down slowly to room temperature (15h). The obtained long black phosphorus is evenly distributed in the quartz tube.
Embodiment 3
[0020] Tin, high-purity red phosphorus, and iodine are mixed according to the ratio of tin: red phosphorus: iodine=3:40:0.5, then put into the quartz tube and directly seal the tube; then put the sealed quartz tube into the horse boiling furnace, the number of quartz tubes Depends on the volume of the horse boiler; set the reaction time, then raise the temperature to 500°C, keep it warm for 10h, then cool down to 200°C, keep it warm for 8h, and finally cool down slowly to room temperature (20h). The obtained long black phosphorus is evenly distributed in the quartz tube.
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