发光学报2025，Vol.46Issue(3)：545-552,8.DOI:10.37188/CJL.20240311
比率荧光碳点对部分水解聚丙烯酰胺精准识别与降解
Ratiometric Fluorescent Carbon Dots for Detection and Degradation of Partially Hydrolyzed Polyacrylamide
摘要
Abstract
Copper-doped carbon dots(Cu-CDs)were fabricated through bottom-up hydrothermal method based on L-tryptophan,folic acid and copper chloride.Characterization of the carbon dots'structure,HPAM recognition mechanism,and degradation performance were conducted using transmission electron microscopy,X-ray photoelec-tron spectroscopy,and steady-state transient fluorescence spectroscopy.As a result,Cu-CDs exhibited a high quan-tum yield of 60%,proving capable of anti-ion interference and specific recognition of partially hydrolyzed polyacryl-amide(HPAM)in water.The fluorescence intensity ratio(I360/I450)of Cu-CDs displayed a strong linear correlation with HPAM concentration from 1 mg/L to 1 000 mg/L,with a remarkable detection limit of 0.27 mg/L.The degrada-tion of HPAM achieved a rate of 78%within 2 hours under 365 nm ultraviolet irradiation,showcasing the efficacy of Cu-CDs.Even after 5 cycles,Cu-CDs retained their high degradation efficiency(67%),underscoring their excep-tional photocatalytic stability.This study presents a practical approach for the precise detection and degradation of HPAM,offering promise for the effective treatment of pollutants.关键词
比率荧光碳点/部分水解聚丙烯酰胺/特异性识别/光催化降解Key words
ratiometric fluorescent carbon dots/HPAM/specific recognition/photocatalytic degradation分类
数理科学引用本文复制引用
施伟光,孙晓静,邵丹阳,李昌升,董彪..比率荧光碳点对部分水解聚丙烯酰胺精准识别与降解[J].发光学报,2025,46(3):545-552,8.基金项目
黑龙江省省属本科高校优秀青年教师基础研究支持计划重点项目(YQJH2024036) （YQJH2024036）
吉林省卫生厅项目(ZYXWST2021061) Supported by Program for Young Talents of Basic Research in Universities of Heilongjiang Province(YQJH2024036) （ZYXWST2021061）
Project of Jilin Provincial Department of Health(ZYXWST2021061) （ZYXWST2021061）
