Characterization of self-assembled films of NiGa layered double hydroxide nanosheets and their electrochemical properties

Ozge Altuntasoglu, Ugur Unal, Shintaro Ida, Motonobu Goto, Yasumichi Matsumoto

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)

    Abstract

    In this study, we have demonstrated the synthesis and delamination of a rarely studied NiGa layered double hydroxide (LDH) system. Hydrothermal treatment under agitation conditions at 200 °C for 4 h resulted in the formation of highly crystalline NiGa LDHs in a shorter time than those synthesized without agitation. The LDH was delaminated into the individual nanosheets in formamide. The most significant finding in this study is the electrochemical behavior of interlayer ferricyanide anions intercalated with the layer-by-layer (LBL) assembly method. The morphology of LBL film with one layer is also monitored with atomic force microscopy. The cyclic voltammogram is similar to potassium metal hexacyanoferrate systems with its unique two-peak wave. Raman spectrum of the film revealed that the metal center of the interlayer cyano complex is in interaction with the Ni2+ of the host layer. It was concluded that the two-peak cyclic voltammogram of the film is a result of two different forms of the hexacyanoferrate in the interlayer.

    Original languageEnglish
    Pages (from-to)3257-3263
    Number of pages7
    JournalJournal of Solid State Chemistry
    Volume181
    Issue number12
    DOIs
    Publication statusPublished - Dec 2008

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Ceramics and Composites
    • Condensed Matter Physics
    • Physical and Theoretical Chemistry
    • Inorganic Chemistry
    • Materials Chemistry

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