Preparation and Characterization of Chlorpyrifos/Cyclodextrin Complex Intercalation into ZnAl-Layered Double Hydroxide

Jie-Xiang LIU, 1 河北工业大学化工学院, 天津 300130,1 School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, P. R. China, Ji-Hui REN, Qiao ZHAO, Ting-Jing SHI, Zhi-Fang LIU, Zhao LUO, Xiao-Guang ZHANG, 2 南开大学化学学院, 天津 300071,2 College of Chemistry, Nankai University, Tianjin 300071, P. R. China
2016 Wuli huaxue xuebao  
Chlorpyrifos (CPF) was firstly included in sulfonated hydroxyethyl-β-cyclodextrin (SBECD) and carboxymethyl-β-cyclodextrin (CMCD) in an ethanol or 1-methyl-2-pyrrolidinone (NMP) solvent. Inclusion complexes (CPF/SBECD and CPF/CMCD) were then intercalated into the galleries of ZnAl-layered double hydroxides (ZAL) to synthesize ZAL-SBECD-CPF and ZAL-CMCD-CPF intercalated materials. The structure and thermal stability of nanohybrids were characterized by powder X-ray diffraction (XRD), Fourier
more » ... sform infrared (FT-IR) spectroscopy, and thermal gravimetric and differential thermal analysis (TG-DTA). The results showed that both CPF/SBECD and CPF/SBECD were successfully intercalated in the interlayer. The samples prepared in the NMP solvent had a stronger diffraction peak intensity than those prepared with ethanol. The intercalated CPF molecules had a high thermal stability. Furthermore, the release behaviors of CPF from ZAL-SBECD-CPF and ZAL-CMCD-CPF nanohybrids were investigated and analyzed at pH 5.0 and 6.8. ZAL-SBECD-
doi:10.3866/pku.whxb201511271 fatcat:6cy44hxwqbetrmyk7ow3fkjusq