水溶性荧光碳量子点的制备及其Cu^(2+)传感性能研究  

Preparation and Cu^(2+) Sensing Performance of Water-Soluble Fluorescent Carbon Dots

作　　者：陈莉[1] 张辉[2] 朱婷雯 孙莲[1] 李晓艳[1] 

机构地区：[1]新疆医科大学药学院,新疆乌鲁木齐830011 [2]新疆医科大学第一附属医院,新疆乌鲁木齐830011

出　　处：《化学与生物工程》2016年第12期48-50,共3页Chemistry & Bioengineering

基　　金：2014新疆医科大学科研创新基金项目(XYDCX201422)

摘　　要：以腐殖酸为碳源制备水溶性碳量子点,并将其应用于Cu^(2+)的检测,研究其传感性能。结果表明,该水溶性荧光碳量子点的平均粒径在3nm左右,具有优异的光致发光性能,对Cu^(2+)具有较高的选择性;在Cu^(2+)浓度为20μmol·L^(-1)时,碳量子点对其响应时间为12s,且在0~20μmol·L^(-1)浓度范围内,碳量子点荧光强度的对数值与Cu^(2+)浓度具有较好的线性相关性。为水溶性荧光碳量子点检测Cu^(2+)提供了可能。Water-soluble fluorescent carbon dots were prepared by using humic acid as a carbon source. To study their sensing performance,the carbon dots were applied to the detection of Cu2＋. Results indicated that, the carbon dots had an excellent photoluminescence property,the average particle size was about 3 nm,and they exhibited a high selectivity to Cu2＋. The response time was 12 s as the concentration of Cu2＋ was 20 μmol·L 1. At the same time,it showed a good linear correlation between the logarithm value of fluorescent intensity of carbon dots and the concentration of Cu2＋ as the concentration of Cu2＋ was from 0μmol·L-1 to 20 μmol·L-1. This study provides a potential for the detection of Cu2＋ by water-soluble fluorescent carbon dots.

关 键 词：腐殖酸 碳量子点 荧光检测 CU2+ 

分 类 号：TQ594[化学工程—精细化工] TB383[一般工业技术—材料科学与工程]