文献类型：期刊文献

英文题名：Adsorption of herbicides 2,4-D and acetochlor on inorganic-organic bentonites

作者：Li, Jianfa[1];Li, Yimin[1];Lu, Jinhong[1]

机构：[1]Shaoxing Univ, Dept Chem, Shaoxing 312000, Zhejiang, Peoples R China

年份：2009

卷号：46

期号：3

起止页码：314

外文期刊名：APPLIED CLAY SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000272104500015)、、EI(收录号：20094412412398)、Scopus(收录号：2-s2.0-70350337087)、WOS

基金：This work was supported by the Natural Science Foundation of Zhejiang Province (Y506288) and the Natural Science Foundation of China (30500387).

语种：英文

外文关键词：Bentonite; Pesticides; Adsorption; Acetochlor; 2,4-D

外文摘要：Inorganic-organic bentonites were prepared by co-adsorption of cetyl trimethylammonium (CTMA) ions onto bentonites intercalated by poly(hydroxo aluminum) or poly(hydroxo iron) cations. The inorganic-organic bentonites adsorbed much more anionic herbicide 2,4-D than the inorganic and organic bentonites. For bentonites modified with poly(hydroxo iron) and CTMA ions, the enhancement may be attributed not only to the van der Waals interaction between 2,4-D and the organic cations, but also to the strong bonding of 2,4-D on the inorganic cations, which was confirmed by desorption studies, XRD measurements and FTIR analysis. The inorganic-organic bentonites did not show higher adsorption of acetochlor compared to the organo-bentonite. For such a nonionic herbicide, the van der Waals interaction dominated the adsorption, and the inorganic modification did not make an obvious contribution to the adsorption. (C) 2009 Elsevier B.V. All rights reserved.