Effects of pulse voltage on the formation of nanoporous Ti oxides by dealloying amorphous TiCu alloy

Shengli Zhu, Lele Pi, Guoqiang Xie, Zhenduo Cui, Xianjin Yang, Akihisa Inoue

    Research output: Contribution to journalConference articlepeer-review

    1 Citation (Scopus)

    Abstract

    In present study, we prepared nanoporous Ti oxides by potentiostat and pulse dealloying TiCu amorphous alloy in HNO3 solution. The influence of applied voltage on the morphology was investigated by SEM. The mechanism of dealloying was also discussed. A multilayer nanoporous structure was fabricated using pulse dealloying. The ideal nanoporous structure with mean pore diameter of about 50-100 nm and mean pore wall thickness of about 50 nm was obtained using pulse dealloying with initial voltage of 1.0 V and pulse size of 0.4 V. The static currents for pulse dealloying are higher than those for potentiostat dealloying under the same initial potentials. The nanoporous surface is mainly composed of TiO, Ti2O3 and TiO2.

    Original languageEnglish
    Article number012022
    JournalJournal of Physics: Conference Series
    Volume417
    Issue number1
    DOIs
    Publication statusPublished - 2013
    Event15th International Conference on Thin Films, ICTF 2011 - Kyoto, Japan
    Duration: 2011 Nov 82011 Nov 11

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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