Adsorption ability for several harmful anions and thermal behavior of Zn-Fe layered double hydroxide

Tenihisa Hongo, Takeshi Iemura, Atsushi Yamazaki

    Research output: Contribution to journalArticle

    30 Citations (Scopus)

    Abstract

    A zinc-iron layered double hydroxide (Zn-Fe LDH) with sulfate as the interlayer ainon has been prepared by the coprecipitation method. The LDH was dehydrated in three steps below 300°C and transformed to the amorphous phase. The «crystallization from the amorphous phase to ZnO (zincite), ZnFe2O4 (spinel) and Zn3O (SO4) 2 occurred at approximately 450°C. Furthermore, Zn3O (SO 4) 2 decomposed into ZnO, SO2 and O2 above 700°C. The adsorption ability of the Zn-Fe LDH was studied for several harmful anions (phosphate, chromate, borate, fluoride, selenate and arsenate) in aqueous solution, and it showed high selectivity for phosphate, chromate and selenate ions. The Zn-Fe LDH was found to be stable over a wide pH range (pH = 2-12). The adsorption ability for phosphate ions depends on the initial pH and it increases with decreasing pH.

    Original languageEnglish
    Pages (from-to)192-197
    Number of pages6
    JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
    Volume116
    Issue number1350
    Publication statusPublished - 2008 Feb

    Fingerprint

    Selenic Acid
    hydroxides
    Chromates
    Anions
    Phosphates
    Negative ions
    anions
    Adsorption
    phosphates
    adsorption
    chromates
    Ions
    Borates
    Coprecipitation
    Crystallization
    Fluorides
    arsenates
    Sulfates
    Zinc
    Iron

    Keywords

    • Harmful anions adsorption
    • Thermalbehavior
    • Zn-Fe layered double hydroxide

    ASJC Scopus subject areas

    • Ceramics and Composites

    Cite this

    @article{f898b8b60ba14441bc9142fa43a7d4ab,
    title = "Adsorption ability for several harmful anions and thermal behavior of Zn-Fe layered double hydroxide",
    abstract = "A zinc-iron layered double hydroxide (Zn-Fe LDH) with sulfate as the interlayer ainon has been prepared by the coprecipitation method. The LDH was dehydrated in three steps below 300°C and transformed to the amorphous phase. The «crystallization from the amorphous phase to ZnO (zincite), ZnFe2O4 (spinel) and Zn3O (SO4) 2 occurred at approximately 450°C. Furthermore, Zn3O (SO 4) 2 decomposed into ZnO, SO2 and O2 above 700°C. The adsorption ability of the Zn-Fe LDH was studied for several harmful anions (phosphate, chromate, borate, fluoride, selenate and arsenate) in aqueous solution, and it showed high selectivity for phosphate, chromate and selenate ions. The Zn-Fe LDH was found to be stable over a wide pH range (pH = 2-12). The adsorption ability for phosphate ions depends on the initial pH and it increases with decreasing pH.",
    keywords = "Harmful anions adsorption, Thermalbehavior, Zn-Fe layered double hydroxide",
    author = "Tenihisa Hongo and Takeshi Iemura and Atsushi Yamazaki",
    year = "2008",
    month = "2",
    language = "English",
    volume = "116",
    pages = "192--197",
    journal = "Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan",
    issn = "1882-0743",
    publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",
    number = "1350",

    }

    TY - JOUR

    T1 - Adsorption ability for several harmful anions and thermal behavior of Zn-Fe layered double hydroxide

    AU - Hongo, Tenihisa

    AU - Iemura, Takeshi

    AU - Yamazaki, Atsushi

    PY - 2008/2

    Y1 - 2008/2

    N2 - A zinc-iron layered double hydroxide (Zn-Fe LDH) with sulfate as the interlayer ainon has been prepared by the coprecipitation method. The LDH was dehydrated in three steps below 300°C and transformed to the amorphous phase. The «crystallization from the amorphous phase to ZnO (zincite), ZnFe2O4 (spinel) and Zn3O (SO4) 2 occurred at approximately 450°C. Furthermore, Zn3O (SO 4) 2 decomposed into ZnO, SO2 and O2 above 700°C. The adsorption ability of the Zn-Fe LDH was studied for several harmful anions (phosphate, chromate, borate, fluoride, selenate and arsenate) in aqueous solution, and it showed high selectivity for phosphate, chromate and selenate ions. The Zn-Fe LDH was found to be stable over a wide pH range (pH = 2-12). The adsorption ability for phosphate ions depends on the initial pH and it increases with decreasing pH.

    AB - A zinc-iron layered double hydroxide (Zn-Fe LDH) with sulfate as the interlayer ainon has been prepared by the coprecipitation method. The LDH was dehydrated in three steps below 300°C and transformed to the amorphous phase. The «crystallization from the amorphous phase to ZnO (zincite), ZnFe2O4 (spinel) and Zn3O (SO4) 2 occurred at approximately 450°C. Furthermore, Zn3O (SO 4) 2 decomposed into ZnO, SO2 and O2 above 700°C. The adsorption ability of the Zn-Fe LDH was studied for several harmful anions (phosphate, chromate, borate, fluoride, selenate and arsenate) in aqueous solution, and it showed high selectivity for phosphate, chromate and selenate ions. The Zn-Fe LDH was found to be stable over a wide pH range (pH = 2-12). The adsorption ability for phosphate ions depends on the initial pH and it increases with decreasing pH.

    KW - Harmful anions adsorption

    KW - Thermalbehavior

    KW - Zn-Fe layered double hydroxide

    UR - http://www.scopus.com/inward/record.url?scp=44649122047&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=44649122047&partnerID=8YFLogxK

    M3 - Article

    AN - SCOPUS:44649122047

    VL - 116

    SP - 192

    EP - 197

    JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

    JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

    SN - 1882-0743

    IS - 1350

    ER -