SnSe square nanosheets and preparation method thereof
A technology of tin selenide and nanosheets, applied in the direction of nanotechnology, nanotechnology, binary selenium/tellurium compounds, etc., can solve the problems of cumbersome reaction steps, secondary pollution of the environment, and long reaction time, and achieve high sample purity , Large output, fast response effect
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[0024] Example 2 The whole process of preparing the best SnSe square nanosheets.
[0025] The Sn powder and the Se powder with a purity of 99.99% are put into a mixer in a molar ratio of 1:1 and mixed evenly. Take out 5g of the mixed powder, use a tablet press to briquette, and press into a cylinder with a diameter of 1.8cm and a height of 0.5cm. Put the briquette of the pressed mixed powder into the graphite pot, and then put it into the anode copper pot in the reaction chamber of the DC arc discharge device. The cathode is a tungsten rod electrode. Vacuumize the reaction chamber of the DC arc discharge device (preferably less than 1Pa), then fill the mixed gas at 10-15kPa according to the volume ratio of argon: nitrogen = 1:1, and inject circulating cooling water into the condensation wall and copper pot, and start discharge. During the discharge process, keep the voltage at 18V, the current at 80-85A, and react for 1-2 minutes. After the reaction is over, vacuumize the ...
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