Heterojunction nanowires having high activity and stability for the reduction of oxygen: Formation by self-assembly of iron phthalocyanine with single walled carbon nanotubes (FePc/SWNTs)

Jia Zhu, Nana Jia, Lijun Yang, Dong Su, Jinseong Park, YongMan Choi, Kuanping Gong

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

A self-assembly approach to preparing iron phthalocyanine/single-walled carbon nanotube (FePc/SWNT) heterojunction nanowires as a new oxygen reduction reaction (ORR) electrocatalyst has been developed by virtue of water-adjusted dispersing in 1-cyclohexyl-pyrrolidone (CHP) of the two components. The FePc/SWNT nanowires have a higher Fermi level compared to pure FePc (d-band center, DFT. =. -0.69. eV versus -0.87. eV, respectively). Consequently, an efficient channel for transferring electron to the FePc surface is readily created, facilitating the interaction between FePc and oxygen, so enhancing the ORR kinetics. This heterojunction-determined activity in ORR illustrates a new stratagem to preparing non-noble ORR electrocatalysts of significant importance in constructing real-world fuel cells. © 2013 Elsevier Inc.
Original languageEnglish (US)
Pages (from-to)61-67
Number of pages7
JournalJournal of Colloid and Interface Science
Volume419
DOIs
StatePublished - Apr 2014
Externally publishedYes

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