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首页> 外文期刊>Materials Letters >Shrinking gold nanoparticles: dramatic effect of a cryogenic process on tannic acid/sodium citrate-generated gold nanoparticles
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Shrinking gold nanoparticles: dramatic effect of a cryogenic process on tannic acid/sodium citrate-generated gold nanoparticles

机译:缩小金纳米颗粒:低温过程对单宁酸/柠檬酸钠生成的金纳米颗粒的戏剧性影响

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摘要

Aqueous gold nanoparticles (Au-NPs) without surfactant protection undergo irreversible aggregation upon a cryogenic treatment. However, a cryogenic process on aqueous gold nanoparticle solution containing tannic acid did not lead to nanoparticle aggregation. The tannic acid serves as surfactant to prevent aggregation of gold nanoparticles. In contrast, a reduction in the particle size in this solution containing tannic acid was observed upon the cryogenic treatment with good reproducibility and uniformity.
机译:没有表面活性剂保护的金纳米颗粒水溶液(Au-NPs)在低温处理后会发生不可逆的聚集。但是,对含鞣酸的金纳米颗粒水溶液进行低温处理不会导致纳米颗粒聚集。单宁酸用作防止金纳米颗粒聚集的表面活性剂。相反,在深冷处理中观察到该含单宁酸的溶液的粒径减小,其再现性和均匀性良好。

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