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Author: search.filters.author.Ishihara, Keiichi N.Subject: search.filters.subject.Bismuth vanadate

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    Item type:Publication,
    Structural, optical and photo-induced catalytic properties of derived-Leucoxene /BiVO4 composite prepared by sonochemical process
    (2022-10-01)
    Kansaard, Thanaphon
    ;
    Ishihara, Keiichi N.
    ;
    Pecharapa, Wisanu
    In this work, the Leucoxene /BiVO<inf>4</inf> composite material was prepared by sonochemical-assisted process by using low-cost leucoxene derived material (LDM) as titanium dioxide source and BiVO<inf>4</inf> with different composition ratios. Crystallinity of composite specimens show the combining structure between monoclinic BiVO<inf>4</inf> and TiO<inf>2</inf> rutile phase with corresponding optical band gap of 2.4 eV and 2.85 eV, respectively. The 2:8-LDM:BV composite performed superior photocatalytic activity with complete decomposition of RhB dye under 20 min of light exposure due to heterojunction structure assisting the recombination retardment of photogenerated electron-hole pair. Superoxide radical (•O<inf>2</inf><sup>-</sup>) is revealed to be major active specie induced by this composite. The composite catalyst exhibits excellent repeatability and reusability with 80% decomposition of organic compound after 10 times of usage.