Oxygen reduction on the electrocatalysts based on pyrolyzed non-noble metal/poly-o-phenylenediamine/carbon black composites: New insight into the active sites (Record no. 43374)

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control field MX-MdCICY
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control field 20250625124733.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
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Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-9115
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245 10 - TITLE STATEMENT
Title Oxygen reduction on the electrocatalysts based on pyrolyzed non-noble metal/poly-o-phenylenediamine/carbon black composites: New insight into the active sites
490 0# - SERIES STATEMENT
Volume/sequential designation Journal of Electroanalytical Chemistry, 611(1-2), p.87-95, 2007
520 3# - SUMMARY, ETC.
Summary, etc. Poly-o-phenylenediamine (PPDA)was synthesized by oxidative polymerization. Catalysts for oxygen reduction were prepared by pyrolyzing PPDA/C, Fe- or Co-PPDA composites supported on carbon black. Their activity, selectivity and surface elemental states were characterized by cyclic voltammetry (CV), steady-state polarization, rotating disc electrode (RDE)technique and X-ray photoelectron spectroscopy (XPS), respectively. The iron-based catalyst is more active than that of the cobalt-based one and pyrolyzed PPDA/C alone but lower than that of Pt/C for O2 reduction reaction (ORR). The RDE results reveal that ORR on pyrolyzed Fe-PPDA/C shows an apparent four-electron mechanism, while on pyrolyzed Co-PPDA/C, the two-electron pathway and the four-electron one parallel in the reaction mechanism. The results on surface analysis demonstrated that the role played by transition metal Co or Fe in the catalyst procursor is only to catalyse the formation of active sites of catalyst for oxygen reduction reaction. It is not the component of active site itself. The active site is closely associated with pyridinic nitrogen. The activity and selectivity of the catalysts depend on the surface density of this group.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element OXYGEN
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element REDUCTION
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element ELECTROCATALYSTS
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element POLY-O-PHENYLENEDIAMINE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element IRON
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element COBALT.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Wang, p.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Ma, Z.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Zhao, Z.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Jia, L.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1Bd0-ifK56OGogmNvte9M-IzHjpvFIhdh/view?usp=drivesdk">https://drive.google.com/file/d/1Bd0-ifK56OGogmNvte9M-IzHjpvFIhdh/view?usp=drivesdk</a>
Public note Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-9115 25.06.2025 25.06.2025 Documentos solicitados