【摘要】 采用共沉淀法制备得到1,5-萘二磺酸根插层的镁铝类水滑石,将其应用于废水中Pb²⁺的脱除.通过X射线衍射（XRD）、红外光谱（IR）、扫描电镜（SEM）等表征手段对所制备的粉末样品进行了结构表征.插层后的类水滑石对Pb²⁺表现出较好的络合分离性能,容量高于110mg/g.本文系统探讨了初始pH、类水滑石的用量、接触时间、络合温度以及Pb²⁺的初始浓度对脱除溶液中Pb²⁺的影响.实验结果表明,反应条件对Pb²⁺的脱除有较大的影响,类水滑石对Pb²⁺的脱除是通过层间1,5-萘二磺酸根和表面羟基与Pb²⁺的络合作用实现的.处理后,水溶液中残留的Pb²⁺浓度低于0.04mg/L,这一结果符合国家地表水环境质量标准的第Ⅲ类标准（≤0.05mg/L）.更多还原

【Abstract】 1,5-Naphthalenedisulfonate（1,5-NDS） intercalated MgAl layered double hydroxide（1,5-NDS-LDH） was prepared by a co-precipitation method.The 1,5-NDS-LDH was used as a functional material for removing Pb²⁺ from water.The XRD,IR,SEM and ICP were used to investigate the structure of the product.The prepared 1,5-NDS-LDH sample exhibited excellent removal properties for Pb²⁺,with a capacity up to 100.3 mg/g.Furthermore,the influences of initial pH,1,5-NDS-LDH dosage,contact time,temperature and initial concentration of Pb²⁺ on the removal were also discussed.The test results reveal that the removal ability for Pb²⁺ is influenced by the conditions.And,the Pb²⁺is removed by 1,5-NDS-LDH with the complexation of the interlayer 1,5-NDS and Pb²⁺ surface OH^-with Pb²⁺.After treatment,The Pb²⁺ residual is about 0.04 mg/L in aqueous solution,lower than the third class of national surface water environment quality standard（≤0.05 mg/L）.更多还原