▎ 摘　　要

The intercalation of zwitterionic surfactants (ZS) including dodecyl dimethyl carboxylbetaine (DCB), dodecyl dimethyl sulfobetaine (DSB) and N-dodecyl-beta-aminoprpionate (DAP) into graphene oxide-layered double hydroxide (GO-LDH) was reported. The effect of the prepared methods, surfactants amount, solvent and reaction time on the structure of ZS/GO-LDH hybrids was investigated by powder X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR), thermogravimetry/differential thermal analysis (TGA/DTA), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The results showed that DCB and DSB could be successfully intercalated into the interlayer of GO-LDH. The d-spacing values of DCB/GO-LDH and DSB/GO-LDH prepared in water were 2.87 similar to 3.29, 3.48 nm, respectively, which were greater than those in N-methyl-2-pyrrolidinone (NMP) (1.25 and 1.31 nm). Moreover, the thermal behaviors of DCB/GO-LDH and DSB/GO-LDH were similar to those of DCB/GO and DSB/GO. And the combustion temperature of DSB in the former was 45 degrees C higher than that in the latter, which is related with the strong interaction between DSB and layer. Furthermore, the release behaviors of chlorpyrifos (CPF) from CPF-DCB/GO-LDH were investigated in pH=5.0 and 6.8 buffer solutions. CPF-DCB/GO-LDH displayed the slow release property. CPF released from CPF-DCB/GO-LDH could be well fitted with pseudo-second-order and the parabolic diffusion models.