| 两性表面活性剂插层GO-LDH的制备和性能 |
| Preparation and Property of Zwitterionic Surfactants Intercalation into Graphene Oxide-Layered Double Hydroxide Hybrid |
|
| 摘要: 以层状氧化石墨烯-锌铝类水滑石（GO-LDH）为主体，两性表面活性剂（ZS）（十二烷基羧基甜菜碱（DCB）、十二烷基磺基甜菜碱（DSB）和N-十二烷基-β-氨基丙酸钠（DAP））为客体，制备ZS/GO-LDH杂化物。采用粉末X射线衍射（XRD）、傅里叶变换红外光谱（FT-IR）、热重/差热分析（TGA/DTA）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）等手段对其进行表征，考察制备方法、表面活性剂用量、溶剂和反应时间等对杂化物结构的影响。结果表明，采用离子交换法成功将DCB和DSB插层GO-LDH。以水为溶剂合成的DCB/GO-LDH和DSB/GO-LDH层间距分别为2.87~3.29、3.48 nm，比N-甲基吡咯烷酮（NMP）为溶剂制备的杂化物（1.25和1.31 nm）更大。另外，DCB/GO-LDH和DSB/GO-LDH的热分解行为与对应的DCB/GO和DSB/GO类似，但前者中DSB的燃烧温度比后者高45℃，这可能与其和层板相互作用强度有关。此外，研究了CPF-DCB/GO-LDH在pH=5.0和6.8的缓冲液中毒死蜱（CPF）的释放行为。结果表明CPF-DCB/GO-LDH具有一定的缓释性能，释放行为可以用准二级动力学和抛物线扩散模型来描述。 |
| 关键词: 锌铝类水滑石 氧化石墨烯 两性表面活性剂 杂化材料 |
| 基金项目: 河北省自然科学基金（No.B2015202046）、国家重点研发计划项目（No.2016YFD0200707）和2018年河北省研究生创新资助项目（No.CXZZSS2018021）资助 |
| Abstract: The intercalation of zwitterionic surfactants (ZS) including dodecyl dimethyl carboxylbetaine (DCB), dodecyl dimethyl sulfobetaine (DSB) and N-dodecyl-β-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 2.87~3.29, 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℃ 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. |
| Keywords: ZnAl-layered double hydroxide Graphene oxide Zwitterionic surfactants Hybrid material |
| 投稿时间：2018-12-13 修订日期：2019-04-07 |
| 摘要点击次数: 1433 |
| 全文下载次数: 725 |
| 刘洁翔,刘昌霞,陈璐佳,张晓光.两性表面活性剂插层GO-LDH的制备和性能[J].无机化学学报,2019,35(5):844-854. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
