| 吴振宇,王仲文,王云.石墨烯气凝胶对水中放射性元素钍的吸附特性研究[J].中华放射医学与防护杂志,2020,40(5):397-401.Wu Zhenyu,Wang Zhongwen,Wang Yun.Adsorption of radionuclide thorium by graphene oxide aerogels from aqueous solution[J].Chin J Radiol Med Prot,2020,40(5):397-401 |
| 石墨烯气凝胶对水中放射性元素钍的吸附特性研究 |
| Adsorption of radionuclide thorium by graphene oxide aerogels from aqueous solution |
| 投稿时间：2020-02-24 |
| DOI：10.3760/cma.j.issn.0254-5098.2020.05.012 |
| 中文关键词: 石墨烯 气凝胶 钍 吸附 |
| 英文关键词:Graphene oxide Aerogel Thorium Adsorption |
| 基金项目:江西省卫生健康委科技计划项目（20203878） |
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| 中文摘要: |
| 目的 研究石墨烯气凝胶（GO-A）对钍的吸附特性。方法 采用水热还原组装法制备GO-A，并用扫描电镜（SEM）和傅里叶红外光谱（FT-IR）进行表征，考察其对放射性废水中钍的吸附效果，包括溶液pH、吸附时间、钍初始浓度和温度等影响因素。结果 在pH为3.0、GO-A的用量为20 mg、溶液体积25 ml、25℃振荡4 h的实验条件下，GO-A对钍的最大吸附量为85.8 mg/g。结论 GO-A制备方法简单，环境友好，固液分离方便，对钍具有较高的吸附净化能力，将为含钍放射性废水处理以及环境监测的样品前处理提供新方法和新技术。 |
| 英文摘要: |
| Objective To study the characteristics of thorium adsorption onto graphene oxide aerogel (GO-A). Method GO-A was prepared using hydrothermal reduction assembly method and characterized using scanning electron microscopy (SEM) and Fourier infrared spectroscopy (FT-IR) to investigate its adsorption performance, including the effects of solution pH, adsorption time, initial thorium concentration, and temperature. Results The maximum adsorption capacity of thorium onto GO-A was 85.8 mg/g under the experimental conditions of pH 3.0, GO-A 20 mg, solution volume 25 ml, and oscillation for 4 h at 25℃. Conclusions The preparation method of GO-A has a high thorium adsorption capacity owing to being simple, environmental benign, convenient for solid-liquid separation. This result will provide new method and technologies for the treatment of thorium-containing radioactive wastewater and the pre-treatment of samples for environmental monitoring. |
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