CN105478796A - 一种利用茶树精油制备纳米银的方法及其制备的纳米银溶液 - Google Patents

一种利用茶树精油制备纳米银的方法及其制备的纳米银溶液 Download PDF

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CN105478796A
CN105478796A CN201510993623.8A CN201510993623A CN105478796A CN 105478796 A CN105478796 A CN 105478796A CN 201510993623 A CN201510993623 A CN 201510993623A CN 105478796 A CN105478796 A CN 105478796A
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solution
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李文茹
李海凌
冯劲
施庆珊
孙廷丽
谢小保
黄小茉
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Guangdong Detection Center of Microbiology of Guangdong Institute of Microbiology
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Abstract

本发明公开了一种利用茶树精油制备纳米银的方法及其制备的纳米银溶液。将硝酸银溶于水中,并加入氨水,调节pH至6-11,Ag+浓度为10μg/mL-50μg/mL,制得银铵溶液;将茶树精油和丙酮按照体积比1:100~200混合均匀后得到还原剂溶液;将银铵溶液加热至沸腾,并在搅拌条件下滴加还原剂溶液,待反应液呈淡黄色或红褐色终止反应,制备得到纳米银溶液。按照上述制备方法,可制备出粒径在2-100nm的纳米银粒子,该制备方法简便易行,可操作性强,成本低廉,且制备过程不会向环境排出有毒有害物质,是一项既简单又环保的纳米银制备技术。

Description

一种利用茶树精油制备纳米银的方法及其制备的纳米银溶液
技术领域
本发明属于抗菌剂制备领域,具体涉及一种利用茶树精油制备纳米银的方法及其制备的纳米银溶液。
发明背景
纳米银(Silvernanoparticles,简称AgNPs)被称为二十一世纪新一代的抗菌剂,它具有广谱高效的抗菌性能,并且不易使微生物产生抗药性。纳米银目前已被广泛应用于各种医疗材料中,如创伤敷料、外科医生的面具、医用导管、医用手术器械、植入人体的组织等。基于纳米银优良的抗菌性能,其应用前景广阔,在生活用品领域、医疗卫生领域、建材领域、电子工业领域等都有广泛的市场需求。
纳米银粒子的制备方法很多,主要是液相化学还原法、电化学法、光化学还原法等化学方法,和还原球磨法、蒸发冷凝法、雾化法等物理方法,其中尤以化学还原法比较常见,但也需要严格控制反应条件,对制备技术的要求比较高。
植物精油又称挥发油或香精油,是萃取植物特有的芳香味儿油状液体,取自于草本植物的花、苞、叶、枝、根、树皮、果实、种子和树脂等,以蒸馏、压榨、溶剂萃取等方式提炼出来。茶树精油是从澳洲茶树中提炼出来,对环境毒副作用很小。
发明内容
本发明的目的是提供一种简便易行、可操作性强、成本低廉,且制备过程不会向环境排入有毒有害物质,是一种环保的利用茶树精油制备纳米银的方法及其制备得到的纳米银溶液。
本发明的利用茶树精油制备纳米银的方法,其特征在于,包括以下步骤:将硝酸银溶于水中,并加入氨水,调节pH至6-11,Ag+浓度为10μg/mL-50μg/mL,制得银铵溶液;将茶树精油和丙酮按照体积比1:100~200混合均匀后得到还原剂溶液;将银铵溶液加热至沸腾,并在搅拌条件下滴加还原剂溶液(每1毫升茶树精油可以还原银离子的量为50mg以下),待反应液呈淡黄色或红褐色终止反应,制备得到纳米银溶液。
所述的将银铵溶液加热至沸腾,并在搅拌条件下滴加还原剂溶液优选是将银铵溶液置于恒温磁力搅拌器中加热至沸腾,并在磁力搅拌条件下缓慢滴加还原剂溶液。
本发明的原理是:利用茶树精油将银离子还原,制备单质纳米银。
按照上述制备方法,可制备出粒径在2-100nm的纳米银粒子,该制备方法简便易行,可操作性强,成本低廉,且制备过程不会向环境排出有毒有害物质,是一项既简单又环保的纳米银制备技术。
附图说明:
图1是实施例1的纳米银溶液的电镜图;
图2是实施例2的纳米银溶液的电镜图;
图3是实施例3的纳米银溶液的电镜图;
图4是实施例4的纳米银溶液的电镜图。
具体实施方式:
以下实施例是对本发明的进一步说明,而不是对本发明的限制。
实施例1:
将硝酸银溶于水中,并加入氨水,调节pH至10,Ag+浓度为20μg/mL,制得银铵溶液。将茶树精油用丙酮稀释100倍(即将茶树精油和丙酮按照体积比1:100混合均匀),得还原剂溶液。取30mL银铵溶液加入一个小三角瓶中,置于恒温磁力搅拌器上,加热至沸腾,在不断磁力搅拌的条件下,缓慢滴加还原剂溶液2mL,待反应液变为淡黄色时终止反应,制得纳米银溶液。
经测定,如图1所示,本实施例的纳米银溶液,其银粒子粒径为2~10nm。
实施例2:
将硝酸银溶于水中,并加入氨水,调节pH至11,Ag+浓度为10μg/mL,制得银铵溶液。将茶树精油用丙酮稀释100倍(即将茶树精油和丙酮按照体积比1:100混合均匀),得还原剂溶液。取30mL银铵溶液加入一个小三角瓶中,置于恒温磁力搅拌器上,加热至沸腾,在不断磁力搅拌的条件下,缓慢滴加还原剂溶液1mL,待反应液变为淡黄色时终止反应,制得纳米银溶液。
经测定,如图2所示,本实施例的纳米银溶液,其银粒子粒径为2~10nm。
实施例3:
将硝酸银溶于水中,并加入氨水,调节pH至6,Ag+浓度为50μg/mL,制得银铵溶液。将茶树精油用丙酮稀释200倍(即将茶树精油和丙酮按照体积比1:200混合均匀),得还原剂溶液。取30mL银铵溶液加入一个小三角瓶中,置于恒温磁力搅拌器上,加热至沸腾,在不断磁力搅拌的条件下,缓慢滴加还原剂溶液6mL,待反应液变为红褐色时终止反应,制得纳米银溶液。
经测定,如图3所示,本实施例的纳米银溶液,其银粒子粒径为2~10nm。
实施例4:
将硝酸银溶于水中,并加入氨水,调节pH至10,Ag+浓度为50μg/mL,制得银铵溶液。将茶树精油用丙酮稀释100倍(即将茶树精油和丙酮按照体积比1:100混合均匀),得还原剂溶液。取30mL银铵溶液加入一个小三角瓶中,置于恒温磁力搅拌器上,加热至沸腾,在不断磁力搅拌的条件下,缓慢滴加还原剂溶液3mL,待反应液变为红褐色时终止反应,制得纳米银溶液。
经测定,如图4所示,本实施例的纳米银溶液,其银粒子粒径为5~25nm。

Claims (3)

1.一种利用茶树精油制备纳米银的方法,其特征在于,包括以下步骤:将硝酸银溶于水中,并加入氨水,调节pH至6-11,Ag+浓度为10μg/mL-50μg/mL,制得银铵溶液;将茶树精油和丙酮按照体积比1:100~200混合均匀后得到还原剂溶液;将银铵溶液加热至沸腾,并在搅拌条件下滴加还原剂溶液,待反应液呈淡黄色或红褐色终止反应,制备得到纳米银溶液。
2.根据权利要求1所述的利用茶树精油制备纳米银的方法,其特征在于,所述的将银铵溶液加热至沸腾,并在搅拌条件下滴加还原剂溶液是将银铵溶液置于恒温磁力搅拌器中加热至沸腾,并在磁力搅拌条件下缓慢滴加还原剂溶液。
3.一种按照权利要求1或2所述的方法制备得到的纳米银溶液。
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CN115852508A (zh) * 2022-12-07 2023-03-28 吉祥三宝高科纺织有限公司 一种抗菌聚乳酸纤维材料及其制备方法

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CN115852508A (zh) * 2022-12-07 2023-03-28 吉祥三宝高科纺织有限公司 一种抗菌聚乳酸纤维材料及其制备方法

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