基于柠檬酸/乙二胺-碳量子点制备荧光传感器  

Fluorescent sensor was prepared by citric acid/ethylenediamine-carbon quantum dots

作　　者：张语嫣 李永生[1] ZHANG Yu-yan;LI Yong-sheng(School of Chemical Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学化学工程学院,四川成都610065

出　　处：《应用化工》2021年第1期87-89,93,共4页Applied Chemical Industry

基　　金：四川省科技创新人才项目资助(2018RZ0145)。

摘　　要：利用柠檬酸(CA)为碳源,乙二胺(EDA)为氮源通过微波加热法合成柠檬酸/乙二胺碳点(CA/EDA-CQDs)。采用静电结合法,将CA/EDA-CQDs固定在毛细管内表面,制备了一种荧光传感器。考察了CA/EDA-CQDs与聚丙烯酸(PAA)溶液浓度、pH对固定化影响。优化的固定化条件为:CA/EDA-CQDs浓度为15 mg/L,pH为3,PAA浓度为6 mg/L,pH为3。制备的传感器对Fe3+有特异性响应。CA/EDA-CQDs was synthesized by microwave heating using citric acid(CA)as carbon source and ethylenediamine(EDA)as nitrogen source.CA/EDA-CQDs was immobilized on the inner surface of capillary by electrostatic force.The effects of CA/EDA-CQDs and PAA solution concentration and pH on the immobilization were investigated.The optimized immobilization conditions were as follows:the concentration and pH of CA/EDA-CQDs was 15 mg/L and 3,the concentration and pH of PAA was 6 mg/L and 3.The sensor prepared by this method has a specific response to Fe 3+.

关 键 词：柠檬酸/乙二胺-碳量子点 固定化 荧光传感器 

分 类 号：TQ422.2[化学工程]