Hydroxylated graphene quantum dots as fluorescent probes for sensitive detection of metal ions
来源期刊：International Journal of Minerals Metallurgy and Materials2020年第1期
论文作者：Qiang Ge Wen-hui Kong Xin-qian Liu Ying-min Wang Li-feng Wang Ning Ma Yan Li
文章页码：91 - 99
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 μM for Cu2+, 0.005 μM for Al3+, 0.04 μM for Fe3+, and 0.02 μM for Cr3+. In addition, the low biotoxicity and excellent solubility of H-GQDs make them promising for application in wastewater metal ion detection.
Qiang Ge1，Wen-hui Kong1，Xin-qian Liu1，Ying-min Wang1，Li-feng Wang1，Ning Ma2，Yan Li1
1. Department of Inorganic Nonmetallic Material, School of Materials Science and Engineering, University of Science and Technology Beijing2. College of Materials Science and Chemical Engineering, Harbin Engineering University
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 μM for Cu2+, 0.005 μM for Al3+, 0.04 μM for Fe3+, and 0.02 μM for Cr3+. In addition, the low biotoxicity and excellent solubility of H-GQDs make them promising for application in wastewater metal ion detection.
关键词：
