基于内滤效应的纳米传感器对废水中Fe^(3+)的检测研究

Research on the Detection of Fe^(3+) in Wastewater Using Nanosensors Based on Internal Filtration Effect

稀土上转换纳米材料由于其发光稳定性好、上转换发光效率高、低自发荧光和高检测灵敏度,在环境检测领域得到广泛的应用。本文采用热分解法,以稀土硬脂酸盐为前驱体,合成形貌规则、尺寸均一和发光性能优异的UCNPs(上转换纳米材料),在UCNPs-HB(竹红菌乙素)上络合Fe^(3+)离子导致内滤效应,从而达到快速检测废水中Fe^(3+)离子的目的,Fe^(3+)浓度范围为100~600μM,检测限为28.42μM。

Rare earth upconversion nanomaterials have been widely used in the field of environmental detection due to their good luminescence stability,high upconversion luminescence efficiency,low spontaneous fluorescence,and high detection sensitivity.This article adopts the thermal decomposition method,using rare earth stearates as precursors,to synthesize UCNPs(upconversion nanomaterials)with regular morphology,uniform size,and excellent luminescence performance.Fe^(3+)ions are complexed on UCNPs HB(hypocrellin B),resulting in internal filtration effect,thus achieving the goal of rapid detection of Fe^(3+)ions in wastewater.The Fe^(3+)concentration range is 100~600μM.The detection limit is 28.42μM.