摘要
制备多孔结构是提高材料对重金属离子吸附能力的一种有效方法。利用沉淀法制备了不同形貌的草酸铜粒子,再将草酸铜粒子在400℃煅烧,得到了具有优异吸附能力的CuO多孔微球。研究了Cu2+和C2O24-的摩尔比和反应温度对草酸铜以及煅烧后得到的CuO的物相、形貌和粒径的影响。对比分析了草酸铜和CuO多孔微球对Cr(Ⅵ)离子的吸附性能。由空心的草酸铜煅烧得到的CuO多孔微球对Cr(Ⅵ)离子表现出优异的吸附能力。最后分析了CuO多孔微球对Cr(Ⅵ)离子吸附的动力学和平衡吸附规律。
Fabricating porous structures is an effective method to improve its performance in heavy metal adsorption. In this study, copper oxalate with different morphologies was prepared by precipitation method. After calcination at 500 ℃, CuO porous microspheres were obtained and showed great adsorption property. The influences of the mol rate of Cu2＋ to C2O_^2- and reaction temperature on the phase, ology and size were investigated. Their adsorption activities were determined using Cr （Ⅵ） aqueous solution. Compared with CuO copper oxalate particles, CuO porous spheres exhibited a better Cr （Ⅵ） adsorption property. We studied the kinetic removal of Cr（Ⅵ） and the equilibrium adsorption isotherm.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2013年第3期495-500,共6页
Bulletin of the Chinese Ceramic Society
基金
山东省自然科学基金资助项目(ZR2010EM059)
山东理工大学青年教师发展支持计划(4072:110019)
关键词
草酸铜
氧化铜
多孔材料
吸附
copper oxalate
copper oxide
porous materials
adsorption
