https://scholars.lib.ntu.edu.tw/handle/123456789/616410
標題: | Structure and properties of C60-Pd films formed by electroreduction of C60 and palladium(II) acetate trimer: Evidence for the presence of palladium nanoparticles | 作者: | Winkler K. Noworyta K. De Bettencourt-Dias A. Sobczak J.W. Wu C.-T. Chen L.-C. Kutner W. Balch A.L. LI-CHYONG CHEN |
公開日期: | 2003 | 卷: | 13 | 期: | 3 | 起(迄)頁: | 518-525 | 來源出版物: | Journal of Materials Chemistry | 摘要: | The composition, surface morphology, structure, and electrochemical properties of thin solid films of the polymer, C60-Pd, were studied by Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), powder X-ray diffraction (XRD), and energy dispersive X-ray fluorescence (EDXRF) as well as being examined by scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM) with selective area diffraction (SAD) and by cyclic voltammetry (CV), respectively. The C60-Pd films were deposited onto Au or Pt electrodes by electroreductive co-polymerization of C60 and the palladium(II) acetate trimer, [Pd(ac)2]3, in a mixed acetonitrile-toluene (4:1, v/v) solution of 0.1 M tetra(n-butyl)ammonium perchlorate under multicyclic voltammetry or potentiostatic conditions. The structure and composition of the C60-Pd films were dependent on the relative concentration of the polymer precursors, i.e., C60 and [Pd(ac)2]3, in the solution for electropolymerization. That is, in films grown in solutions with a high [Pd(ac)2]3 :C60 ratio, (-C60-Pd-)n polymeric chains were separated by the Pd nanoclusters. These films were relatively smooth and uniform. In contrast, films electropolymerized in solutions with a low [Pd(ac)2]3 : C60 ratio were rough, porous and much less uniform. The presence of the Pd nanoclusters in the C60-Pd film influenced the electrode processes of probing redox species dissolved in solution. That is, electro-oxidation of an N,N,N′,N′-tetramethyl-1,4-phenylenediamine (TMPDA) electrochemical redox probe was partially inhibited at the electrode coated by the C60-Pd film with a relatively low Pd nanocluster content. In contrast, electro-oxidation of TMPDA was effectively mediated by the C60-Pd film containing appreciable amounts of dispersed Pd nanoclusters. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-0037338358&doi=10.1039%2fb208481n&partnerID=40&md5=1f881d88035d8be6619a2a256f138906 https://scholars.lib.ntu.edu.tw/handle/123456789/616410 |
ISSN: | 09599428 | DOI: | 10.1039/b208481n | SDG/關鍵字: | Composition;Electrochemistry;Energy dispersive spectroscopy;Morphology;Palladium;Polymers;Raman spectroscopy;X ray photoelectron spectroscopy;X ray powder diffraction;Electrochemical properties;Fullerenes;acetonitrile;carbon;chlorine derivative;n,n,n',n' tetramethyl 1,4 phenylenediamine;palladium complex;tert butylammonium perchlorate;toluene;unclassified drug;article;chemical composition;chemical structure;cyclic potentiometry;electrochemistry;electrode;film;nanoparticle;oxidation;oxidation reduction reaction;polymerization;Raman spectrometry;scanning electron microscopy;X ray diffraction;X ray fluorescence;X ray photoelectron spectroscopy |
顯示於: | 凝態科學研究中心 |
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