一种用于去除、磁性固相萃取和荧光传感镉（II）的多功能复合FeO/MOF/ l-半胱氨酸。
A multifunctional composite FeO/MOF/l-cysteine for removal, magnetic solid phase extraction and fluorescence sensing of Cd(ii).
作者信息
Fan Lu, Deng Min, Lin Caixue, Xu Chen, Liu Yana, Shi Zhennan, Wang Yingxi, Xu Zushun, Li Ling, He Man
机构信息
Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Function Molecules, Hubei University 430062 People's Republic of China
Department of Chemistry, Wuhan University Wuhan City Hubei Province 430074 People's Republic of China
出版信息
RSC Adv. 2018 Mar 16;8(19):10561-10572. doi: 10.1039/c8ra00070k. eCollection 2018 Mar 13.
FeO/MOF (metal organic framework)/l-cysteine was synthesized and applied for the removal of Cd(ii) from wastewater. The adsorption kinetics and isotherms were investigated, and the results indicated that the adsorption obeyed the pseudo-second-order kinetic model and Langmuir isotherm. The maximum adsorption capacity was calculated to be 248.24 mg g. FeO/MOF/l-cysteine was further applied to determine trace amounts of Cd(ii) in real water samples using ICP-AES (inductively coupled plasma-atomic emission spectroscopy) based on magnetic solid-phase extraction (MSPE). The determination limit was 10.6 ng mL. Additionally, FeO/MOF/l-cysteine can also be used as a fluorescent sensor for "turn-off" detection of Cd(ii), and the detection limit was 0.94 ng mL.
合成了FeO/金属有机框架（MOF）/l-半胱氨酸，并将其用于去除废水中的Cd（ii）。研究了吸附动力学和等温线，结果表明吸附符合准二级动力学模型和朗缪尔等温线。计算得出最大吸附容量为248.24 mg/g。基于磁性固相萃取（MSPE），进一步将FeO/MOF/l-半胱氨酸应用于使用电感耦合等离子体原子发射光谱法（ICP-AES）测定实际水样中的痕量Cd（ii）。测定限为10.6 ng/mL。此外，FeO/MOF/l-半胱氨酸还可用作荧光传感器用于“关闭”检测Cd（ii），检测限为0.94 ng/mL。
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