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| 聚甲基丙烯酸-Fe3O4纳米吸附剂的吸附性能 | |
| 引用本文： | 周利民,刘峙嵘,黄群武.聚甲基丙烯酸-Fe3O4纳米吸附剂的吸附性能[J].中国环境科学,2007,27(1):137-140. |
| 作者姓名： | 周利民 刘峙嵘 黄群武 |
| 作者单位： | 1. 天津大学化工学院,天津,300072;东华理工学院核资源与环境教育部重点实验室,江西,抚州,344000 2. 天津大学化工学院,天津,300072 3. 东华理工学院核资源与环境教育部重点实验室,江西,抚州,344000 |
| 摘 要： | 以共沉淀法制备纳米Fe3O4,通过在颗粒表面接枝聚甲基丙烯酸(PMAA),制备了一种新型磁性纳米吸附剂.用透射电镜(TEM)、X-衍射分析(XRD)等对其进行了表征,并考察了它对酸性玫瑰红B(RB)的吸附性能.结果表明,制备的磁性微球平均粒径18nm.该吸附剂能有效去除RB,吸附速率很快,在5min内基本达到平衡.等温吸附数据符合Langmuir模型,饱和吸附容量为0.2mg/mg,吸附常数为7.2mL/mg.吸附为吸热过程,288～318K时,焓变为18kJ/mol. |
| 关 键 词： | 纳米吸附剂 聚甲基丙烯酸 酸性玫瑰红B |
| 文章编号： | 1000-6923(2007)01-0137-04 |
| 修稿时间： | 2006年6月24日 |
Adsorption porperty of polymethacrylic acid-Fe3O4 nanoadsorbent |
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| ZHOU Li-min,LIU Zhi-rong,HUANG Qun-wu.Adsorption porperty of polymethacrylic acid-Fe3O4 nanoadsorbent[J].China Environmental Science,2007,27(1):137-140. | |
| Authors: | ZHOU Li-min LIU Zhi-rong HUANG Qun-wu |
| Abstract: | A novel magnetic nanoadsorbent was prepared by jointing polymethacrylic acid (PMAA) onto the granule surface of Fe3O4 nanoparticles, using coprecipitating method. This adsorbent was characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis; and its adsorption property on acidic rose red B (RB) was investigated. The mean diameter of the prepared magnetic nanoadsorbent was 18nm. The adsorbent could remove effectively RB. The adsorption rate was very rapid, and reached equilibrium basically within 5 min. The isotherm adsorption data accorded with the Langmuir model, with a maximum adsorption capacity of 0.2mg/mg and an adsorption constant of 7.2mL/mg. The adsorption was endothermic process, and the enthalpy change was 18kJ/mol at 288~318K. |
| Keywords: | Fe3O4 |
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