L-半胱氨酸存在下银纳米片的聚集及其分离应用。
Aggregation of silver nanoplates in the presence of L-cysteine and the application for separation.
作者信息
Li Dan, Zhou Kang, Chen Zhenhua, Mei Xifan
机构信息
Department of Basic Science, Jinzhou Medical University, Jinzhou, People's Republic of China.
出版信息
IET Nanobiotechnol. 2018 Aug;12(5):609-612. doi: 10.1049/iet-nbt.2017.0225.
Abstract
A facile method was investigated to fabricate the aggregated silver nanoplates as products for separation materials. Initially, ageing of L-cysteine capped silver nanoplates in ethanol solvent led to fast aggregation. Then, the as-formed aggregates were easily prepared as powder due to the highly volatile properties of ethanol. Interestingly, the aggregated powder would be soluble again after the dispersion in water and the re-dispersed nanoplates could be obtained. Furthermore, the heavy metal ions such as Cu, Pb and Hg would soon accelerate the aggregation of the dispersed silver nanoplates again. The reversible aggregation process could be employed for separation applications in the future.
摘要
研究了一种简便的方法来制备聚集的银纳米片作为分离材料产品。最初，在乙醇溶剂中L-半胱氨酸封端的银纳米片老化会导致快速聚集。然后，由于乙醇的高挥发性，形成的聚集体很容易制成粉末。有趣的是，聚集的粉末在分散于水中后会再次溶解，从而可以获得重新分散的纳米片。此外，诸如铜、铅和汞等重金属离子会很快再次加速分散的银纳米片的聚集。这种可逆聚集过程未来可用于分离应用。
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