共沉淀法制备磷酸盐纳米颗粒及其对甲基蓝吸附性能研究  

Synthesis of Phosphate Microparticles by Precipitation and Their Applications for Adsorption of Methyl Blue

作　　者：庄福强[1] 谭瑞琴[1] 熊丹[1] 沈文锋[2] 许炜[2] 宋伟杰[2] 

机构地区：[1]宁波大学,浙江宁波315211 [2]中国科学院宁波材料技术与工程研究所,浙江宁波315201

出　　处：《稀有金属材料与工程》2016年第S1期20-23,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(21377063);宁波市自然科学基金(2012A610120);宁波大学王宽诚幸福基金

摘　　要：采用共沉淀方法室温下制备分别含有Ca和Ba的磷酸盐纳米颗粒,并作为吸附剂用于水溶液中甲基蓝染料的去除。实验通过研究不同接触时间和不同初始浓度的甲基蓝溶液对上述两种吸附剂吸附甲基蓝量的影响,对吸附过程进行等温吸附线和吸附动力学分析。结果表明:在20min内,两种吸附剂都达到吸附平衡,而且对甲基蓝的吸附符合准二级动力学方程。磷酸盐对甲基蓝的吸附性能满足Langmuir吸附等温线方程。Two kinds of phosphate microparticles were synthesized by a simple precipitation method. X-ray diffraction(XRD), and scanning electron microscope(SEM) were used to characterize the samples. The prepared materials were used as absorbents for adsorption of methyl blue. Some influencing factors, including contact time and initial concentration of methyl blue were investigated. The results show that the equilibrium is achieved within 20 min for the two kinds of phosphate microparticles. The experimental data follow the Langmuir isotherm model and the Kinetic results accorded with the pseudo-second-order model.

关 键 词：共沉淀 磷酸盐 吸附 甲基蓝 

分 类 号：TB383.1[一般工业技术—材料科学与工程] O647.3[理学—物理化学]