纳米羟基磷灰石粉体的制备及其对苯酚吸附研究  

PREPARATION OF NANO-HYDROXYAPATITE POWDERS AND THEIR ADSORPTION BEHAVIORS OF PHENOL IN AQUEOUS SOLUTION

作　　者：潘家永[1] 林开利[1] 成荣明[1] 陈奕卫[1] 于华荣[1] 

机构地区：[1]华东师范大学纳米功能材料与器件研究中心,上海200062

出　　处：《水处理技术》2007年第1期20-22,共3页Technology of Water Treatment

基　　金：上海市纳米科技专项基金资助项目(0252nm011;05nm05042)

摘　　要：应用化学沉淀法制备得到纳米羟基磷灰石(n-HAp)粉体,并研究了n-HAp粉体对水溶液中苯酚的吸附性能。考查了n-HAp粉体的用量、溶液的pH值和苯酚的初始浓度对苯酚吸附量的影响。研究结果表明:n-HAp对苯酚具有很好的吸附效果,在2h内即可达到吸附平衡;饱和吸附量达到11.0mg/g;pH值对吸附性能的影响明显,在强酸和强碱情况下能有效提高n-HAp对苯酚的吸附量;苯酚的去除率随粉体用量的增加而提高。Nano-hydroxyapatite （n-HAp） powder was prepared by chemical precipitation method, and the adsorption behaviors of phenol on n-HAp powders in aqueous solution was investigated. The effect of adsorption time, pH value, phenol concentration and n-HAp powder amount on the adsorption of phenol on n-HAp powder was studied. The results showed that the n-HAp powder had excellent ability to adsorb phenol. The adsorption equilibrium could be reached within 2 h, and the adsorption capacity of phenol on n-HAp powder reached 1-1.0mg/g. The pH value played an obvious role in the phenol adsorption on n-HAp powder. The adsorption capacity of phenol on n-HAp powder increased with increasing the pH to high-acidity or to high-alkalinity. Increasing the n-HAp powder amount could effectively increase the phenol-removing percentage.

关 键 词：纳米 羟基磷灰石 苯酚 吸附 

分 类 号：TQ424.2[化学工程]