Приказ основних података о документу
Heat-treated iron(III) tetramethoxyphenyl porphyrin supported on high-area carbon as an electrocatalyst for oxygen: I. Characterization of the electrocatalyst
dc.creator | Gojković, Snežana Lj. | |
dc.creator | Gupta, S. | |
dc.creator | Savinell, R.F. | |
dc.date.accessioned | 2021-03-10T09:44:09Z | |
dc.date.available | 2021-03-10T09:44:09Z | |
dc.date.issued | 1998 | |
dc.identifier.issn | 0013-4651 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/179 | |
dc.description.abstract | Iron(III) tetramethoxyphenyl porphyrin chloride adsorbed on the Black Pearls carbon (FeTMPP-Cl/BP) was heat-treated at temperatures from 200 to 1000°C in Ar atmosphere and characterized by using cyclic voltammetry, X-ray photoclectron spectroscopy (XPS), and transmission electron microscopy (TEM) techniques. Cyclic voltammetry experiments were carried out in acidic and alkaline solutions. Redox peaks due to the Fe(III)/Fe(II) reaction were present in an unheat-treated sample and in the sample heat-treated at 200°C but were significantly reduced in height for the sample heat-treated at 400°C. At higher temperatures they disappeared, indicating decomposition of FeTMPP-Cl. After heat-treatment at 700°C or higher, an anodic peak in the first cathodic A weep was observed and it was attributed to the dissolution of metallic Fe. XPS measurements did not show unambiguously the valence state of the Fe in the electrocatalyst heat-treated at high temperatures, but comparison of cyclic voltammograms of dectrodeposited Fe and a bulk Fe electrode with cyclic voltammograms of FeTMPP-Cl/BP indicated that it was metallic Fe. Fe particles were observed on TEM images. Many more iron particles were present in the sample heat-treated at 1000°C than in the sample heat-treated at 800°C. Some of the particles remained in both samples after electrochemical dissolution, and they were completely surrounded by carbon particles or wrapped in the graphite shell. A well-defined graphite shell surrounding iron particles was observed only in the sample heat-treated at 1000°C. | en |
dc.publisher | Electrochemical Soc Inc, Pennington | |
dc.rights | restrictedAccess | |
dc.source | Journal of the Electrochemical Society | |
dc.title | Heat-treated iron(III) tetramethoxyphenyl porphyrin supported on high-area carbon as an electrocatalyst for oxygen: I. Characterization of the electrocatalyst | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 3499 | |
dc.citation.issue | 10 | |
dc.citation.other | 145(10): 3493-3499 | |
dc.citation.rank | aM21 | |
dc.citation.spage | 3493 | |
dc.citation.volume | 145 | |
dc.identifier.doi | 10.1149/1.1838833 | |
dc.identifier.pmid | ||
dc.identifier.scopus | 2-s2.0-0032187134 | |
dc.type.version | publishedVersion |