期刊论文

Song Huan

中文

无机材料学报

1000-324X

2020

35

1

65-72

10.15541/jim20190073

National Natural Science Foundation of ChinaNational Natural Science Foundation of China [21577144, 11675192, 21790373]

本校为第一且通讯机构

对无机二维过渡金属碳化物(MXene)进行碱化处理, 成功制备了碱化碳化钛(Na-Ti3C2Tx), 用于对Eu(III)的快速去除。采用固液比、溶液pH和离子强度、动力学、等温线、热力学等批次实验方法对Na-Ti3C2Tx去除Eu(III)的行为进行了系统研究。实验结果表明: 整个吸附过程受溶液pH和离子强度影响较大, 吸附过程在很短的时间(5 min)就达到了吸附平衡, 该过程更符合Langmuir吸附模型, 在298 K时最大吸附容量可达54.05 mg/g。热力学结果表明Na-Ti3C2Tx对Eu(III)的吸附为自发吸热反应过程。使用能量色散X射线光谱(EDS)、粉末XRD和扩展X射线吸收精细结构光谱学(EXAFS)对其吸附机理进行了分析, 结果表明酸性条件...

In order to rapidly remove Eu(III) from aqueous solution, an alkalized two-dimensional titanium carbide, Na-Ti_3C_2T_x, was successfully prepared by treating inorganic two-dimensional transition metal carbide (MXene) with NaOH. Adsorption behavior of Eu(III) on Na-Ti_3C_2T_x was systematically investigated by batch experiments. The results show that the adsorption process is greatly affected by pH and ionic strength of the solution, and reached equilibrium within 5 min. Based on Langmuir model fitting results, the maximum adsorption capacity of Eu(III) on Na-Ti_3C_2T_x was calculated to be 54....