微米球四氧化三铁的水热合成和对铅离子的吸附研究
Hydrothermal Synthesis of Fe3O4 Microsphere and Its Adsorption Performance for Pb2+
DOI: 10.12677/HJCET.2020.106051, PDF,    科研立项经费支持
作者: 葛业玲, 袁学文, 邹红丽*, 卢敏敏, 刘振东, 穆洪涛, 刘凤银, 刘依文, 梁颖茵：广东第二师范学院生物与食品工程学院，广东 广州
关键词: Fe3O4微米球；水热合成；吸附；Pb2+；Fe3O4 Microsphere； Hydrothermal Synthesis； Adsorption； Pb2+
摘要: 本文以FeCl3•6H2O，Na3C6H5O7•2H2O为反应原料，水热法合成Fe3O4微米球。通过X射线衍射(XRD)、扫描电镜(SEM)和傅里叶红外光谱(FTIR)对Fe3O4进行表征。研究了Fe3O4微米球对Pb2+的吸附特性，并使用等温模型、吸附动力学和吸附热力学模型分析吸附机理。结果表明，Fe3O4微米球对Pb2+的吸附过程符合Freundlich等温吸附模型和准二级动力学模型。热力学参数表明对Pb2+的吸附过程是自发和吸热过程。在25℃，pH为6的条件下，对Pb2+的最大吸附容量是74.5 mg•g−1。
Abstract: Fe3O4 microsphere were synthesized by a hydrothermal method with the reactants of FeCl3•6H2O and Na3C6H5O7•2H2O and characterized by XRD、SEM and FTIR. The adsorption performance of Fe3O4 microsphere for Pb2+ was researched. Isothermal adsorption model, adsorption kinetic model and adsorption thermodynamics model were used to analyze adsorption mechanism. The results showed that the adsorption of Fe3O4 microsphere for Pb2+ was fitted with Freundlich isothermal model and quasi-second-order adsorption kinetic model. Thermodynamic parameters demonstrated that the Pb2+ adsorption process was spontaneous and endothermic. The maximum adsorption capacity of Pb2+ onto Fe3O4 microsphere was 74.5 mg•g−1 when the pH was 6 and the temperature was 25˚C.
文章引用：葛业玲, 袁学文, 邹红丽, 卢敏敏, 刘振东, 穆洪涛, 刘凤银, 刘依文, 梁颖茵. 微米球四氧化三铁的水热合成和对铅离子的吸附研究[J]. 化学工程与技术, 2020, 10(6): 398-406. https://doi.org/10.12677/HJCET.2020.106051

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