钾离子是生物体内重要的金属元素之一,钾离子紊乱会导致多种疾病,因此钾离子的灵敏、快速、高选择性分析检测具有重要意义。以聚烯丙胺盐酸盐为前驱体,通过水热法制备了荧光碳点。通过高分辨透射电子显微镜、X射线光电子能谱仪、紫外-可见分光光度计、荧光光谱仪对碳点的形貌、化学成分和光谱性能进行表征。通过四苯硼钠的荧光猝灭和钾离子竞争性结合引起的荧光恢复,建立了荧光测定钾离子的新方法。基于碳点的荧光恢复的传感方法对钾离子的分析检测是一个有效的补充。
Potassium ions are one of the important metal elements in the organism and the disorders of potassium ions can cause a variety of diseases.The sensitive,rapid,and highly selective analysis and detection for potassium ions are of great significance.Fluorescent carbon dots (CDs) were prepared by hydrothermal method using polyallylamine hydrochloride (PAH) as precursor.High resolution transmission electron microscopy,X-ray photoelectron spectroscopy,UV-Vis spectroscopy and fluorescence spectroscopy were carried out to characterize the morphology,composition and spectral properties of CDs.Based on the sodium tetraphenylborate (TPB) induced fluorescence quenching and the competitive binding of potassium ions induced fluorescence recovery,a novel detection method for potassium ions was established.This sensing method based on the fluorescence recovery of carbon points is an effective complement to the analysis and detection of potassium ions.
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基金资助
国家级大学生创新创业训练计划项目(20231108);太原工业学院引进人才科研资助项目(2022KJ058)
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