中文摘要：

通过硝酸处理在碳纳米管（CNTs）表面生成了羧基（—COOH）基团,随后采用尿素法在其水悬浮液中原位合成了层状双金属氢氧化物（LDH）,获得了层状双金属氢氧化物/碳纳米管复合物（LDH/CNTs）,考察了CNTs用量对LDH形貌与结构的影响.结果表明,CNTs的用量对LDH的产率及结构无显著影响;但当CNTs用量较低（〈0.2 g/L）或过高（〉4.0 g/L）时,会导致LDH的粒径分布变宽.对LDH/CNTs进行氯化及有机化处理,获得了十二烷基苯磺酸根离子（DBS）插层的DBS-LDH/CNTs.对DBS-LDH/CNTs在不同有机溶剂中分散及剥离程度的研究发现,DBS-LDH/CNTs在丁醇、乙醇及二甲苯中均可良好分散且其悬浮液较稳定,LDH在不同溶剂中的剥离程度为丁醇〉乙醇〉二甲苯〉四氢呋喃.

英文摘要：

Layered double hydroxide（LDH）/carbon nanotubes（CNTs） composites were prepared by urea method in the aqueous suspension of CNTs.Effect of CNTs concentration on the morphologies and structures of LDH/CNTs composites was investigated in detail.The results showed that in the case of low（0.2 g/L） or very high（4.0 g/L） CNTs concentration,there was a fairly wide size distribution for the LDH particles in LDH/CNTs while distributes uniformly relatively in the region of 0.2—4.0 g/L.The introduction of CNTs has a little influence on the size and structure of LDH crystals.By means of decarbonation treatment and further ion-exchange using surfactant sodium dodecylbenzene sulfonate（SDBS）,the LDH/CNTs composites with interlayer anion of dodecylbenzene sulfo-group（DBS-LDH/CNTs） were obtained.Then the DBS-LDH/CNTs composites were dispersed in several organic solvents,respectively.The results revealed that the suspension of DBS-LDH/CNTs in 1-butanol,ethanol and xylene kept stable in a long duration while sedimentated quickly in tetrahydrofuran.In addition,the delamination extent for LDH in these solvents ranked as follows： 1-butanol ethanolxylenetetrahydrofuran.