A new approach for the preparation, exfoliation, and intercalation properties of niobium layered sulfide material

Kazuyoshi Izawa, Shintaro Ida, Ugur Unal, Tomoki Yamaguchi, Yasumichi Matsumoto

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We have developed the new process that can synthesize a layered niobium sulfide under heating a layered oxide with H2S/N2 gas mixture. It was confirmed that K0.34(H2O)xNbS2 was obtained as a single phase and high crystallinity under heating K4Nb6O17·3H2O with the gas at 750°C for 10 h and washing with distilled water. The layered sulfide had the large plate-like shapes that have 50 μm wide length on average. Potassium ions in the interlayer of K0.34(H2O)yNbS2 could be exchanged to hydronium ions by stirring 2M H2SO4. It was also confirmed that tetrabutylammonium could intercalate in interlayer of proton exchanged form. In addition, colloidal solution was obtained after ultrasonication of proton exchanged form. According to the AFM image, the thickness of sulfide nanosheets had 4.2 Å, which roughly corresponded with the thickness of NbS2 single layer.

    Original languageEnglish
    Pages (from-to)181-185
    Number of pages5
    JournalSynthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry
    Volume38
    Issue number2 PART 1
    DOIs
    Publication statusPublished - Mar 2008

    All Science Journal Classification (ASJC) codes

    • Physical and Theoretical Chemistry
    • Inorganic Chemistry

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