Method for preparing CZTS (Copper Zinc Tin Sulfide) (Se) series nanometer powder by low-temperature mechanical alloying
A mechanical alloying, nano-powder technology, applied in chemical instruments and methods, inorganic chemistry, nanotechnology, etc., can solve the problems of unsuitable industrial scale production, harsh synthesis conditions, and low product yield, etc. The effect of morphology control, simple operation and reduction of reaction energy consumption
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Embodiment 1
[0020] Embodiment 1 (Cu 2 ZnSnS 4 ):
[0021] (1) Take elemental Cu powder, Zn powder, Sn powder, and S powder as raw materials, weigh 2.56 grams of Cu powder, 1.3 grams of Zn powder, 2.37 grams of Sn powder, and 2.56 grams of S powder in a molar ratio of 2:1:1:4 , take by weighing 527 grams of grinding balls according to the mass ratio of the grinding balls and the weighed raw materials being 60:1, and measure 25 mL of process control agent (20 mL of absolute ethanol+5 mL of analytically pure ethylenediamine) with a graduated cylinder;
[0022] (2) Add the raw materials weighed in step (1), balls and process control agent together into a grinding tank with a volume of 500mL, feed argon as a protective gas, seal the grinding tank, and transfer the grinding tank to a planetary ball mill, The set speed is 300 rpm, and the ball milling time is 72 hours;
[0023] (3) The product obtained in step (2) was centrifugally washed with distilled water and absolute ethanol for 3 times,...
Embodiment 2
[0025] Embodiment 2 (Cu 2 ZnSnS 2 Se 2 ):
[0026] (1) Take elemental Cu powder, Zn powder, Sn powder, S powder, and Se powder as raw materials, weigh 2.56 grams of Cu powder, 1.3 grams of Zn powder, and 2.37 grams of Sn powder in a molar ratio of 2:1:1:2:2 , 1.28 grams of S powder, 3.158 grams of Se powder, weigh 214 grams of grinding balls according to the mass ratio of the grinding balls and the weighed raw materials to 20:1, measure 100 mL of process control agent (75 mL of absolute ethanol+25 mL of analytical pure Ethylenediamine);
[0027] (2) Add the raw materials weighed in step (1), balls and process control agent together into a grinding tank with a volume of 500mL, feed argon as a protective gas, seal the grinding tank, and transfer the grinding tank to a planetary ball mill, The set speed is 600 rpm, and the ball milling time is 12 hours;
[0028] (3) The product obtained in step (2) was centrifugally washed with distilled water and absolute ethanol for 3 time...
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