Preparation method of silver sulfide nano particle
A technology of nano-particles and silver sulfide, applied in the direction of nano-structure manufacturing, chemical instruments and methods, nano-technology, etc., can solve the problems of restricting Ag, and achieve the effect of novel preparation process, easy promotion, simple and novel
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Embodiment 1
[0021] Such as figure 1 As shown, the present embodiment prepares silver sulfide nanoparticles through the following steps:
[0022] (a) Weigh 10 mg of bovine serum albumin and dissolve it in 10 mL of deionized water, add 5 mL of AgNO 3 The solution was vigorously stirred at room temperature, and left to stand for 2 hours in vacuum nitrogen to make a silver ion-protein mixture;
[0023] The purity of the bovine serum albumin is >99.8%, and the molecular weight is 68000;
[0024] The concentration of the AgNO3 solution is: 50mmol / L;
[0025] (b) Weigh 0.0188g thioacetamide (CH 3 CSNH 2 ) was dissolved in 5mL of deionized water, added to the silver ion protein mixture in (a) and then left still after slight stirring to make a silver-sulfur protein mixture;
[0026] (c) Put the silver-sulfur protein mixture at room temperature for 96 hours, centrifuge at 15,000 rpm for 10 minutes, wash the black solid three times with distilled water and ethanol, and then vacuum-dry it at 30...
Embodiment 2
[0029] (a) Weigh 20 mg of bovine hemoglobin and dissolve it in 10 mL of deionized water, add 5 mL of AgNO 3 The solution was vigorously stirred at room temperature, and left to stand for 2 hours in vacuum nitrogen to make a silver ion-protein mixture;
[0030] The AgNO 3 The concentration of the solution is: 50mmol / L;
[0031] (b) Weigh 0.0188g thioacetamide (CH 3 CSNH 2 ) was dissolved in 5mL of deionized water, added to the silver ion protein mixture in (a) and then left still after slight stirring to make a silver-sulfur protein mixture;
[0032] (c) Put the silver-sulfur protein mixture at room temperature for 96 hours, centrifuge at 15,000 rpm for 10 minutes, wash the black solid three times with distilled water and ethanol, and then vacuum-dry it at 30°C for 12 hours , made of silver sulfide nanoparticles.
Embodiment 3
[0034] (a) Weigh 30 mg of porcine serum albumin and dissolve it in 10 mL of deionized water, add 5 mL of AgNO 3 The solution was vigorously stirred at room temperature, and left to stand for 2 hours in vacuum nitrogen to make a silver ion-protein mixture;
[0035] The AgNO 3 The concentration of the solution is: 50mmol / L;
[0036] (b) Weigh 0.0188g thioacetamide (CH 3 CSNH 2 ) was dissolved in 5mL of deionized water, added to the silver ion protein mixture in (a) and then left still after slight stirring to make a silver-sulfur protein mixture;
[0037] (c) The silver-sulfur protein mixture solution was left to react at room temperature for 96 hours, centrifuged at 15,000 rpm for 10 minutes, and the black solid obtained was washed three times with distilled water and ethanol successively, and then vacuum-dried at 30°C for 12 hours. Hours, made of silver sulfide nanoparticles.
[0038] The Ag obtained in present embodiment 1~3 compared with prior art 2 The S nanoparticles...
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