Hydroxylated graphene quantum dots as fluorescent probes for sensitive detection of metal ions

被引：15

作者：

Ge, Qiang ^{[1
]}

Kong, Wen-hui ^{[1
]}

Liu, Xin-qian ^{[1
]}

Wang, Ying-min ^{[1
]}

Wang, Li-feng ^{[1
]}

Ma, Ning ^{[2
]}

Li, Yan ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Dept Inorgan Nonmetall Mat, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

[2] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Harbin 150001, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS | 2020年 / 27卷 / 01期

基金：

中国国家自然科学基金;

关键词：

graphene quantum dots; surface hydroxylation; metal ions detection; fluorescent probes; LABEL-FREE DETECTION; SELECTIVE DETECTION; CARBON DOTS; ORGANIC FRAMEWORK; SENSING PLATFORM; SENSOR; PHOTOLUMINESCENCE; NANOMATERIALS; CHEMOSENSOR; AL(III);

D O I：

10.1007/s12613-019-1908-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Highly sensitive methods are important for monitoring the concentration of metal ions in industrial wastewater. Here, we developed a new probe for the determination of metal ions by fluorescence quenching. The probe consists of hydroxylated graphene quantum dots (H-GQDs), prepared from GQDs by electrochemical method followed by surface hydroxylation. It is a non-reactive indicator with high sensitivity and detection limits of 0.01 mu M for Cu2+, 0.005 mu M for Al3+, 0.04 mu M for Fe3+, and 0.02 mu M for Cr3+. In addition, the low biotoxicity and excellent solubility of H-GQDs make them promising for application in wastewater metal ion detection.

引用

页码：91 / 99

页数：9

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