%0 Journal Article
%T Novel layered pesticide slow/controlled release materials—supramolecular structure and slow release property of glyphosate intercalated layered double hydroxides<br>Novel layered pesticide slow/controlled release materials——supramolecular structure and slow release property of glyphosate intercalated layered double hydroxides
%A MENG Jinhong
%A ZHANG Hui
%A David G Evans & DUAN Xue Ministry of Education Key Laboratory of Science
%A Technology of Controllable Chemical Reactions
%A Beijing University of Chemical Tech- nology
%A Beijing
%A China
%A <br>MENGJinhong
%A ZHANGHui
%A DavidG.Evans
%A DUANXue
%J 科学通报(英文版)
%D 2005
%I 
%X Two different interlayer structured glyphosate (GLY) intercalated MgAl layered double hydroxides, as novel pesticide slow/controlled release materials, have been synthesized by co-precipitation method under various reac- tion pH values. The slow/controlled release properties have been tested in Na2CO3 aqueous solution. The release mecha- nism has been interpreted on the basis of the ion-exchange between the guest GLY anions in the lamellar host and 23CO ? in the release media, and the diffusion process of GLY anions in the interstice and interlayer of GLY intercalates, i.e diffusion through the particles, is the rate-limiting step of GLY release process. The GLY intercalate assembled at lower pH, possessing higher interlayer gallery height and vertical monolayered arrangement of guest anions in the interlayer with larger packing density, exhibits better slow release property than that assembled at higher pH. The re- sults reveal that the layered double hydroxides have potential application in the pesticide slow/controlled release area.
%K layered double hydroxides
%K co-precipitation
%K slow/ controlled release materials
%K supramolecular structure
%K glyphosate<br>草甘膦
%K 杀虫剂
%K 氢氧化物
%K 原料释放控制
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=1120FC82FAA1FCE36C2E04AFFF4D2FF3&yid=2DD7160C83D0ACED&vid=771152D1ADC1C0EB&iid=5D311CA918CA9A03&sid=04EA291949415E08&eid=8A6D8366EA57F0FF&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=0