Method for preparing nanometer sulfides powder
A powder material, sulfide technology, applied in chemical instruments and methods, lead sulfide, zinc sulfide, etc., can solve the problems of large particle size, wide size range, low purity, etc., achieve narrow particle size distribution, avoid agglomeration, The effect of high powder purity
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[0015] Example 1: Add ZnSO 4 13.72g (0.085mol) is formulated into a concentration of 1.0×10 -4 mol / L solution, add 6g (0.6%) quaternary ammonium salt, add Na 2 S9.95g is formulated into a solution with a concentration of 1.0×10 -3 mol / L. Will Na 2 S solution slowly drip into ZnSO 4 In the solution, stir rapidly at the same time, continue to stir for a while after the addition, then filter, wash with water, dry, and calcinate at 750°C. Finally, 6.22 g of white ZnS powder with a particle size of 20 to 120 nm was obtained.
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[0016] Example 2: The CdSO 4 18.81g (0.09mol) is formulated to a concentration of 1.2×10 -4 mol / L solution, add 4.57g (0.5%) quaternary ammonium salt, add Na 2 S10.53g is formulated into a solution with a concentration of 1.0×10 -3 mol / L. Will Na 2 S solution slowly drip into CdSO 4 In the solution, stir rapidly at the same time, continue to stir for a while after the addition, then filter, wash with water, dry, and calcinate at 750°C. Finally, 10.40 g of orange CdS powder with a particle size of 20-100 nm was obtained.
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[0017] Example 3: Pb(NO 3 ) 2 52.99g (0.16mol) is formulated into a concentration of 2.0×10 -4 mol / L solution, add 10.00g (0.9%) quaternary ammonium salt, add Na 2 S18.73g is formulated into a solution with a concentration of 1.0×10 -3 mol / L. Will Na 2 S solution is slowly dripped into Pb(NO 3 ) 2 In the solution, stir rapidly at the same time, continue to stir for a while after the addition, then filter, wash with water, dry, and calcinate at 750°C. Finally, 34.45g of blue PbS powder with a particle size of 50-140nm was obtained.
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