A Dark-Field Scattering Spectroelectrochemical Technique for Tracking the Electrodeposition of Single Silver Nanoparticles

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• 作者：Caleb M. Hill ; Shanlin Pan
• 刊名：Journal of the American Chemical Society
• 出版年：2013
• 出版时间：November 20, 2013
• 年：2013
• 卷：135
• 期：46
• 页码：17250-17253
• 全文大小：264K
• 年卷期：v.135,no.46(November 20, 2013)
• ISSN：1520-5126

文摘

Dark-field scattering spectroelectrochemistry is used to analyze the electrochemical formation of individual Ag nanoparticles (NPs) at the surface of an indium tin oxide electrode. Heterogeneities in redox potentials among NPs not visible in bulk electrochemical measurements are presented for the first time. Through correlated electron microscopy, single NP light scattering intensity is related to particle size according to Mie theory, enabling rapid particle size determination and the construction of voltammetric curves for individual NPs.