Hierarchical layered double hydroxide epitaxially grown on vermiculite for Cr(VI) removal

被引：29

作者：

Tian, Weiliang ^{[1
,2
]}

Kong, Xianggui ^{[1
]}

Jiang, Meihong ^{[1
]}

Lei, Xiaodong ^{[1
]}

Duan, Xue ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

[2] Tarim Univ, Coll Life Sci, Key Lab Chem Engn South Xinjiang, Alar 843300, Peoples R China

来源：

MATERIALS LETTERS | 2016年 / 175卷

基金：

中国国家自然科学基金;

关键词：

LDHs; Vermiculite; Multilayer structure; Thin films; Epitaxial growth; Crystal growth; WATER;

D O I：

10.1016/j.matlet.2016.03.141

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hierarchical MgAI layered double hydroxide (MgAI LDH) was fabricated both on the external and interlayer surfaces of natural mineral vermiculite (VMT) via in situ epitaxial growing technique. The fabrication of the MgAl LDH/VMT was achieved by lattice match of VMT with MgAI LDH, which indicates MgAI LDH can adopt a tilted orientation to the VMT surface. Compared with traditional MgAI LDH, the hierarchically structured MgAl LDH/VMT exhibits higher sorption-regeneration performance for Cr(VI), since the specific surface area and transfer channel are significantly enhanced due to its porous 3D framework. The 3D hierarchical MgAl LDH/VMT can be potentially used as a structured adsorbent in waste water treatment. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：110 / 113

页数：4

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