Synthesis of Monodisperse, Quasi-Spherical Silver Nanoparticles with Sizes Defined by the Nature of Silver Precursors

详细信息    查看全文

• 作者：Houshen Li ; Haibing Xia ; Wenchao Ding ; Yijing Li ; Qiurong Shi ; Dayang Wang ; Xutang Tao
• 刊名：Langmuir
• 出版年：2014
• 出版时间：March 11, 2014
• 年：2014
• 卷：30
• 期：9
• 页码：2498-2504
• 全文大小：455K
• 年卷期：v.30,no.9(March 11, 2014)
• ISSN：1520-5827

文摘

Monodisperse, quasi-spherical silver nanoparticles (Ag NPs) with controlled sizes have been produced directly in water via adding the aqueous solutions of the mixtures of AgNO₃ and sodium citrate to boiling aqueous solutions of ascorbic acid (AA). Different compounds, including NaCl, NaBr, KI, Na₂SO₄, Na₂CO₃, Na₂S, and Na₃PO₄, are added to the AgNO₃/citrate mixture solutions to form new silver compounds with fairly low solubility in water, which are used as precursors instead of soluble Ag⁺ ions to synthesize Ag NPs via AA/citrate reduction. This enables us not only to produce monodisperse, quasi-spherical Ag NPs but also to tune the sizes of the resulting NPs from 16 to 30 nm according to the potential of new silver precursors as well as the concentrations of anions.