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
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
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
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U2 - 10.2109/jcersj2.116.192
DO - 10.2109/jcersj2.116.192
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 -