尺寸可控的固相萃取吸附剂Ni/Al LDH的制备  

Preparation of size controlled solid phase extraction adsorbent Ni / Al LDH

作　　者：栾玲玉[1] 程传格[1] 尹西翔 王利红[1] 李剑[1] 孙德军[3] 

机构地区：[1]山东省分析测试中心,山东济南250014 [2]济南市环境监测中心站,山东济南250012 [3]山东大学胶体与界面化学教育部重点实验室,山东济南250100

出　　处：《山东科学》2014年第1期45-50,共6页Shandong Science

基　　金：山东省科学院博士基金(2012-12)

摘　　要：采用非稳态共沉淀方法制备了无定形的Ni/Al LDH纳米粒子,水热处理过程促进了无定形沉淀的结晶,从而得到稳定的六边片状Ni/Al LDH纳米粒子胶体分散体系。通过调整胶溶温度和胶溶时间控制Ni/Al LDH纳米粒子的形貌和尺寸,对比不同胶溶温度和胶溶时间下得到的样品,得出制备Ni/Al LDH纳米粒子的最佳条件为胶溶温度130℃,胶溶时间24 h。由于Ni/Al LDH纳米粒子独特的带电及结构性质,具有较好的吸附性能,可将其制作成固相萃取柱,实现纳米材料与样品前处理技术的有机结合,优化样品前处理技术。We prepared Ni/Al layered double hydroxide （LDH） nanoparticles by non-steady co-precipitation.Water heat treatment process accelerated the crystal of amorphous precipitation.We acquired stable hexagonal sheet Ni/Al LDH nanoparticle colloidal suspensions.We controlled the shape and size of Ni/Al LDH nanoparticles by adjusting peptization temperature and time.We further obtained the optimal peptization temperature of 130 ℃ and peptization time of 24 h for the preparation of Ni/Al LDH nanoparticles.Ni/Al LDH nanoparticles have better adsorption property because of their unique properties of net positive charge and structure and can be manufacured as a solid phase extraction adsorbent.This realizes the combination of nanocomposites with sample pretreatment technology and optimizes sample preprocessing technology.

关 键 词：固相萃取吸附剂 层状双氢氧化物 非稳态共沉淀 胶溶 

分 类 号：TB383[一般工业技术—材料科学与工程]