| α-Fe2O3空心球的水热法制备及其对苯酚的吸附性能 | |
| α-Fe2O3 Hollow Spheres: Hydrothermal Synthesis and Phenol Adsorption Performance | |
| 摘要: 以铁氰化钾、磷酸二氢铵等为反应物，采用水热法合成了α-Fe2O3空心球，并用XRD，TEM，FESEM(场发射扫描电镜)、UV-Vis和低温氮吸附脱附对其进行了表征。结果表明，α-Fe2O3空心球直径在200～560 nm之间，其BET比表面积为80 m2·g-1，平均孔径为8.5 nm。考察了反应时间、反应物用量和反应温度等对α-Fe2O3空心球形貌和大小的影响，提出了其可能的形成机理。研究了室温下α-Fe2O3空心球吸附苯酚的性能，吸附达平衡时，其吸附苯酚的量达97 mg·g-1。 | |
| 关键词: 氧化铁空心球 纳米材料 吸附 | |
| 基金项目: | |
| Abstract: Using potassium ferricyanide, NH4H2PO4 as the reactants, α-Fe2O3 hollow spheres were synthesized by a hydrothermal method. The samples were characterized by TEM, XRD, FESEM(field-emission scanning electron microscope), UV-Vis spectroscopy and low temperature nitrogen adsorption-desorption. The results show that the diameter of α-Fe2O3 hollow spheres is 200～560 nm, and the BET surface area and the average diameter of pore is 80 m2·g-1 and 8.5 nm, respectively. The effect of the reaction time, the amount of reactant and the reaction temperature on the morphology and size of α-Fe2O3 hollow spheres was examined. The formation mechanism of the hollow spheres was proposed. The adsorption performance of α-Fe2O3 hollow spheres to phenol was investigated at room temperature, and the capacity for phenol adsorption was 97 mg·g-1 when the balance of adsorption was reached. | |
| Keywords: α-Fe2O3 hollow spheres nanomaterials adsorption | |
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| 袁晓卫,杨 骞,刘 琦,于丽丽,陈 群,徐 正.α-Fe2O3空心球的水热法制备及其对苯酚的吸附性能[J].无机化学学报,2010,26(2):285-292. | |
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