氨基修饰的ZIF-90用于有效吸附环境水中的金（III）
Amino-Modified ZIF-90 for Effective Adsorption of Au(III) in Environmental Water.
作者信息
Zhou Na, Wu Xueli, Wang Shaoxia, Qu Jianfei, Tan Yang, Luan Chuanlei, Yin Xiuli, Wu Xuran, Zhuang Xuming
机构信息
Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China.
School of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China.
出版信息
Molecules. 2025 Apr 18;30(8):1826. doi: 10.3390/molecules30081826.
In this work, amino-modified ZIF-90 (NH-ZIF-90) was prepared by using butylamine as a modifier, and its effectiveness in adsorbing Au(III) from environmental samples was investigated. The morphology and structure of NH-ZIF-90 were analyzed via SEM, XRD, FT-IR, and XPS. Optimal adsorption occurred after 12 h of shaking in a pH = 5 aqueous solution with 2 mg mL NH-ZIF-90. The adsorption kinetics conformed to a pseudo-second-order model, and the equilibrium data fit the Freundlich isotherm model well. Finally, NH-ZIF-90 was successfully used in lake water and tap water samples for Au(III) adsorption, with recovery rates ranging from 81.0% to 93.3%. This study presents a novel approach for addressing Au(III) adsorption challenges.
在本工作中，以丁胺为改性剂制备了氨基改性的ZIF-90（NH-ZIF-90），并研究了其从环境样品中吸附Au(III)的效果。通过扫描电子显微镜（SEM）、X射线衍射（XRD）、傅里叶变换红外光谱（FT-IR）和X射线光电子能谱（XPS）对NH-ZIF-90的形貌和结构进行了分析。在pH = 5的水溶液中，加入2 mg/mL的NH-ZIF-90振荡12 h后出现最佳吸附效果。吸附动力学符合准二级模型，平衡数据很好地拟合了Freundlich等温线模型。最后，NH-ZIF-90成功用于湖水和自来水样品中Au(III)的吸附，回收率在81.0%至93.3%之间。本研究提出了一种应对Au(III)吸附挑战的新方法。
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