Plasmonic Imaging of Electrochemical Oxidation of Single Nanoparticles.
Measuring electrochemical activities of nanomaterials is critical for creating novel catalysts, for developing ultrasensitive sensors, and for understanding fundamental nanoelectrochemistry. However, traditional electrochemical methods measure a large number of nanoparticles, which wash out the prop...
| Publicado en: | Journal of the American Chemical Society Vol. 136; no. 36; pp. 12584 - 12588 |
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| Autores principales: | , , , , , , , |
| Formato: | Artículo |
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American Chemical Society
9/10/2014
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=98891006&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 98891006 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 9/10/2014 vid: 136 iid: 36 pid: 997 pub: American Chemical Society artinfo: ui: 98891006 10.1021/ja507097y ppf: 12584 ppct: 4 formats: tig: atl: Plasmonic Imaging of Electrochemical Oxidation of Single Nanoparticles. aug: au: Yimin Fang Wei Wang Xiang Wo Yashuang Luo Shaowei Yin Yixian Wang Xiaonan Shan Nongjian Tao affil: State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China Center for Bioelectronics and Biosensors, Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States su: Plasmons (Physics) Imaging systems Oxidation Nanostructured materials Detectors sug: subj: Plasmons (Physics) Imaging systems Oxidation Nanostructured materials Detectors ab: Measuring electrochemical activities of nanomaterials is critical for creating novel catalysts, for developing ultrasensitive sensors, and for understanding fundamental nanoelectrochemistry. However, traditional electrochemical methods measure a large number of nanoparticles, which wash out the properties of individual nanoparticles. We report here a study of transient electrochemical oxidation of single Ag nanoparticles during collision with an electrode and voltammetry of single nanoparticles immobilized on the electrode using a plasmonic-based electrochemical current microscopy. This technique images both electrochemical reaction and size of the same individual nanoparticle, enabling quantitative examination of size-dependent electrochemical activities at single nanoparticle level. The imaging capability further allows detection of the reaction kinetics of each individual nanoparticle and analysis of the average behaviors of multiple nanoparticles. The average kinetics and size dependence can be accurately described by the Tafel equation, but there is a large variability between different nanoparticles, which underscores the importance of single nanoparticle analysis. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2014 holdings: @attributes: islocal: N |
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