CuFeO2制备、表征及对亚甲基蓝的吸附性能

Preparation and Characterization of CuFeO2 and Its Adsorption Properties for Methylene Blue

摘要:

采用化学共沉淀法合成了纳米粒子CuFeO2，运用扫锚电镜/能谱仪(SEM/EDS)、粉末X衍射仪(XRD)、傅里叶变换红外光谱(FT-IR)和比表面积仪(BET)等技术手段对其进行了表征，分析表明：合成的CuFeO2颗粒大小为20 nm, 比表面积为258.3 m2/g。CuFeO2对亚甲基蓝(MB)的吸附是一个准二级动力学过程，在40 min内快速达到吸附平衡，较好符合Langmuir吸附模型，同时CuFeO2具有优异吸附性能，室温下pH=7时最大吸附量达123.0 mg/g，CuFeO2可作为一种有效除去水体中亚甲基蓝污染物的高容量吸附材料。

Abstract:

Nano-size CuFeO2 was prepared with chemical coprecipitation method and its nanoparticles were characterized by scanning electron microscopy/ energy disperse spectroscopy (SEM/EDS), X-ray diffraction (XRD), Fourier transform infrared (FT-IＲ) and BET analysis. The results show that the size of CuFeO2 synthesized is about 20 nm and its specific area is 258.3 m2/g. The adsorption of methylene blue (MB) is a pseudo second-rate kinetic process and reaches equilibrium in 40 min，in good agreement with the Langmuir adsorption model. CuFeO2 has good adsorption ability and its maximum adsorption capacity reaches 123.0 mg/g at room temperature and pH = 7. CuFeO2 can be used as adsorption material with high capacity for effective removal of methylene blue from waste water.