• About
  • Policies
  • What is open access
  • Library
  • Contact
Advanced search
      View Item 
      •   BUIR Home
      • Scholarly Publications
      • Faculty of Science
      • Department of Chemistry
      • View Item
      •   BUIR Home
      • Scholarly Publications
      • Faculty of Science
      • Department of Chemistry
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.

      Charge storage and release onto Au and Ag nanoparticles in aqueous medium as probed by optical spectroscopy

      Thumbnail
      View / Download
      476.0 Kb
      Author(s)
      Tunc, I.
      Sezen, H.
      Guvenc, H. O.
      Süzer, Şefik
      Date
      2014
      Source Title
      Journal of Spectroscopy and Dynamics
      Print ISSN
      2249-2704
      Electronic ISSN
      2249-2712
      Publisher
      Cognizure
      Volume
      4
      Issue
      1
      Pages
      1 - 5
      Language
      English
      Type
      Article
      Item Usage Stats
      122
      views
      38
      downloads
      Abstract
      Gold and silver nanoparticles in aqueous solutions can store negative or positive charges when, respectively, NaBH4, KI are introduced into the same media. The charge storage can be followed by the spectral shifts in the corresponding surface plasmon resonance (SPR) bands of these nanoparticles. In a similar way, the kinetics of these two processes can be monitored by the same shifts. Accordingly, we show that although Au nanoparticles exhibit smaller spectral shifts upon both negative and positive charge storage, when compared with Ag nanoparticles, their kinetics are faster towards reduction (electron storage) and comparable towards oxidation. Hence, if not the spectral shifts, the kinetics of the electron storage process can be correlated to the larger electron affinity of Au nanoparticles, when compared with those of Ag. The similarity of the kinetics towards oxidation must also be related to the small difference between the ionization potentials of Au and Ag nanoparticles.
      Keywords
      Au and Ag nanoparticles
      Spectral shifts
      Electron storage and release
      Electron affinities
      Ionization potentials
      Permalink
      http://hdl.handle.net/11693/49296
      Collections
      • Department of Chemistry 707
      Show full item record

      Browse

      All of BUIRCommunities & CollectionsTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsCoursesThis CollectionTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsCourses

      My Account

      Login

      Statistics

      View Usage StatisticsView Google Analytics Statistics

      Bilkent University

      If you have trouble accessing this page and need to request an alternate format, contact the site administrator. Phone: (312) 290 2976
      © Bilkent University - Library IT

      Contact Us | Send Feedback | Off-Campus Access | Admin | Privacy