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以亚铁氰化钾为单源前驱体,以活性炭为载体,采用超声辅助均匀沉淀法,制备了普鲁士蓝/活性炭复合材料(PB/AC)。通过场发射扫描电子显微镜、X-射线衍射、X-射线光电子能谱和傅立叶变换红外光谱技术,对PB/AC的形貌、结构和组成进行了表征。结果表明:立方体结构的PB微晶均匀地分布在活性炭表面。研究考察了PB/AC对水溶液中铯离子(Cs~+)的吸附和脱附性能。在pH=7、45℃和180 min条件下,PB/AC对Cs~+的最大吸附量为49.17 mg/g;在pH=2、45℃和240 min条件下,Cs~+的脱附率可达88.5%。
Prussian blue / activated carbon composites (PB / AC) were prepared by using potassium ferrocyanide as a single source precursor and activated carbon as a carrier by ultrasonic assisted homogeneous precipitation method. The morphology, structure and composition of PB / AC were characterized by field emission scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The results show that the cubes with cubic structure are uniformly distributed on the surface of activated carbon. The adsorption and desorption properties of PB / AC on cesium ions (Cs ~ +) in aqueous solution were studied. Under the conditions of pH = 7,45 ℃ and 180 min, the maximum adsorption capacity of PB / AC to Cs ~ + was 49.17 mg / g. At pH = 2,45 ℃ and 240 min, the desorption rate of Cs ~ + Up to 88.5%.