Method for environment-friendly in-situ synthesis of nano-silver by means of sericin and product
A technology of green synthesis and sericin, which is applied in the direction of nanotechnology, can solve the problems of preparing nano-silver materials from undisclosed sericin, and achieve good biocompatibility, good application prospects, and mild conditions
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Embodiment 1
[0029] The method of using sericin in situ green synthesis of nano-silver, the preparation process is as follows figure 1 As shown in A, the details are as follows:
[0030] 1) Extraction of sericin: Take 10g of silkworm cocoons and cut them into small pieces, place them in an autoclave at a bath ratio of 1:30, treat them at 120°C and 0.1Mpa for 30min, then wring out the silk and filter it with gauze Collect the filtrate to obtain the sericin extract;
[0031] 2) Preparation of sericin powder: freeze the sericin extract prepared in step 1) at -80°C for 2 hours, and then dry in a freeze dryer for 24 hours to obtain sericin powder;
[0032] 3) Preparation of sericin solution: adding 0.1% (wt) of sericin powder prepared in step 2) into hot water above 60° C. to redissolve to obtain sericin solution;
[0033] 4) Preparation of sericin-nanometer silver: add 4 mg / mL silver nitrate to the sericin solution prepared in step 3) to obtain a sericin-silver nitrate solution, then place t...
Embodiment 2
[0036] The method of using sericin in situ green synthesis of nano-silver, the preparation process is as follows figure 1 As shown in A, the details are as follows:
[0037] 1) Extraction of sericin: Take 10g of silkworm cocoons and cut them into small pieces, place them in an autoclave at a bath ratio of 1:30, treat them at 120°C and 0.1Mpa for 30min, then wring out the silk and filter it with gauze Collect the filtrate to obtain the sericin extract;
[0038] 2) Preparation of sericin powder: freeze the sericin extract prepared in step 1) at -80°C for 2 hours, and then dry in a freeze dryer for 24 hours to obtain sericin powder;
[0039] 3) Preparation of sericin solution: adding 0.1% (wt) of the sericin powder prepared in step 2) into hot water above 60° C. to redissolve to obtain a sericin solution;
[0040] 4) Preparation of sericin-nanometer silver: add 8 mg / mL of silver nitrate to the sericin solution prepared in step 3) to obtain a sericin-silver nitrate solution, the...
Embodiment 3
[0043] The method of using sericin in situ green synthesis of nano-silver, the preparation process is as follows figure 1 As shown in A, the details are as follows:
[0044]1) Extraction of sericin: Take 10g of silkworm cocoons and cut them into small pieces, place them in an autoclave at a bath ratio of 1:30, treat them at 120°C and 0.1Mpa for 30min, then wring out the silk and filter it with gauze Collect the filtrate to obtain the sericin extract;
[0045] 2) Preparation of sericin powder: freeze the sericin extract prepared in step 1) at -80°C for 2 hours, and then dry in a freeze dryer for 24 hours to obtain sericin powder;
[0046] 3) Preparation of sericin solution: adding 0.1% (wt) of the sericin powder prepared in step 2) into hot water above 60° C. to redissolve to obtain a sericin solution;
[0047] 4) Preparation of sericin-nanometer silver: add 16mg / mL silver nitrate to the sericin solution prepared in step 3) to obtain a sericin-silver nitrate solution, then pl...
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