阴离子交换树脂的合成及对碱性溶液中U的吸附性能研究——一个放射化学综合实验的设计

Synthesis of an Anion Exchange Resin and Investigation of Its Adsorption Properties for U:Design of A Comprehensive Experiment in Radiochemistry

鉴于目前一些高校放射化学部分实验比较陈旧,试验次数不足,设计了一个新的放射化学实验。用壳聚糖做原材料合成一种阴离子交换树脂,经红外光谱(IR)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)和能量色散X射线谱(EDS)对其结构及微观形貌进行分析,进行碱性溶液中U吸附性能的探索。本实验难度适中,要求学生自己制备材料,具有一定的挑战性,可以激发学生的学习兴趣,培养学生系统的科研思维和绿色环保意识。

Some of the radiochemistry experiments in some universities are relatively outdated and involve insufficient experimentation times. This paper describes the design of a new radiochemistry experiment. Using chitosan as a raw material, an anion exchange resin was synthesized by a two-step reaction. Its structure and micromorphology were characterized by infrared spectroscopy(IR), X-ray photoelectron spectroscopy(XPS),scanning electron microscopy(SEM), and energy-dispersive X-ray spectroscopy(EDS). Using this material, the adsorption properties of U in an alkaline solution were studied. The designed experiment is easy to conduct and allows students to prepare their own materials;this is challenging and can stimulate students’ interest in learning, as well as cultivate in them the art of systematic scientific research thinking and environmental awareness.