A new method for preparation of nanoplates of Zn-Al layered double hydroxides

被引：13
|
作者：
Hibino, Toshiyuki [1 ]
机构：
[1] Natl Inst Adv Ind Sci & Technol, Res Inst Environm Management Technol, Tsukuba, Ibaraki 3058569, Japan
来源：
APPLIED CLAY SCIENCE | 2011年 / 54卷 / 01期
关键词：
Layered double hydroxide; Delamination; Nanoplate; Colloidal dispersion; POSITIVELY CHARGED NANOSHEETS; MOLECULAR-DYNAMICS SIMULATION; HYDROTHERMAL TREATMENT; ANIONIC CLAYS; DELAMINATION; HYDROTALCITE; LDH; NANOPARTICLES; STABILITY; WATER;
D O I：
10.1016/j.clay.2011.07.016
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Methods for preparation of nanoplates of layered double hydroxides (LDHs) have been intensively investigated for the purpose of making nanocomposites, The present study provides a new simple method of nanoplate preparation for Zn-Al LDHs. Zn-Al LDHs containing lactate or combinations of lactate and simple inorganic anions were synthesized by a coprecipitation method, and water-washed and undried LDHs were dispersed in water. Among them, suspensions of Zn-Al LDHs containing both lactate and bicarbonate were unique in that they rapidly became translucent colloidal dispersions when the molar ratio of added bicarbonate to added Al was <= 0.5. The resulting LDH nanoplates in the dispersions were delaminated single layers or nanoplates with a thickness of several layers, depending on the amount of bicarbonate. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：83 / 89
页数：7
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