期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 138, 期 10, 页码 3478-3483出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.5b13217
关键词
-
资金
- Universite Paris Diderot
- CNRS
- Agence Nationale de la Recherche (NEOCASTIP) [ANR-CE09-0015-01]
- Laboratoire d'Excellence Institut Pierre-Gilles de Gennes pour la Microfluidique (Labex IPGG), Investissements d'avenir program [ANR-10-IDEX-0001-02, ANR-10-LABX-31]
- Labex IPGG
Electrochemical (EC) impacts of single nano particles (NPs) on an ultramicroelectrode are coupled with optics to identify chemical processes at the level of individual NPs. While the EC signals characterize the charge transfer process, the optical monitoring gives a complementary picture of the transport and chemical transformation of the NPs. This is illustrated in the case of electrodissolution of Ag NPs. In the simplest case, the optically monitored dissolution of individual NPs is synchronized with individual EC spikes. Optics then validates in situ the concept of EC nanoimpacts for sizing and counting of NPs. Chemical complexity is introduced by using a precipitating agent, SCN-, which tunes the overall electrodissolution kinetics. Particularly, the charge transfer and dissolution steps occur sequentially as the synchronicity between the EC and optical signals is lost. This demonstrates the level of complexity that can be revealed from such electrochemistry/optics coupling.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据