Deciphering the Elementary Steps of Transport-Reaction Processes at Individual Ag Nanoparticles by 3D Super localization Microscopy
Deciphering the Elementary Steps of Transport-Reaction Processes at Individual Ag Nanoparticles by 3D Super localization Microscopy
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DOI：
10.1021/acs.nanolett.5b02921
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发表时间：
2015-10-01
期刊：
影响因子：
10.8
通讯作者：
Kanoufi, Frederic
中科院分区：
文献类型：
--
作者：
Patel, Anisha N.;Martinez-Marrades, Ariadna;Kanoufi, Frederic
用电化学和原位三维光散射显微镜相结合的方法研究了单个银纳米颗粒(NPs)的传输反应过程。电化学被用来触发(I)能够加速和向电极预浓缩NPs的扩散迁移模式，以及(Ii)NPs随后的扩散控制的氧化。使用光学模型分析的单个NP的溶出率表明不溶性产品的干预作用。对不同NPs行为的新见解突出了耦合光学-电化学3D显微镜在单个NP研究中的优势。
Transport-reaction processes at individual Ag nanopartides (NPs) are studied using electrochemistry coupled with in situ 3D light scattering microscopy. Electrochemistry is used to trigger a (i) diffusiophoretic transport mode capable of accelerating and preconcentrating NPs toward an electrode and (ii) subsequent diffusion-controlled oxidation of NPs. Individual NP dissolution rate, analyzed using optical modeling, suggests the intervention of insoluble products. New insights into diverse NPs behaviors highlight the strength of coupled optical-electrochemical 3D microscopies for single-NP studies.