标题:Facile and highly effective synthesis of nitrogen-doped graphene quantum dots as a fluorescent sensing probe for Cu2+ detection
作者:Gao, Bo ;Chen, Da ;Gu, Bingli ;Wang, Ting ;Wang, Zihao ;xie, Feng ;Yang, Yongsheng ;Guo, Qinglei ;Wang, Gang
作者机构:[Gao, Bo ;Chen, Da ;Gu, Bingli ;Wang, Ting ;Wang, Zihao ;xie, Feng ;Yang, Yongsheng ;Wang, Gang ] Department of Microelectronic Science and Engineerin 更多
通讯作者:Chen, Da
来源:Current Applied Physics
出版年:2020
卷:20
期:4
页码:538-544
DOI:10.1016/j.cap.2020.01.018
关键词:Cu2+ detection; Hydrothermal method; Nitrogen-doped graphene quantum dots; Photoluminescence quenching
摘要:Nitrogen-doped graphene quantum dots (N-GQDs) with high blue fluorescence efficiency were synthesized by the hydrothermal method from p-Phenylenediamine and p-Coumaric acid. The N-GQDs possess several superiorities, most significantly in excellent solubility and superior photostability. Besides, the as-prepared N-GQDs exhibit a uniform size distribution with a diameter of about 3.8 ± 0.5 nm. After dispersing the N-GQDs in water, the formed aqueous solution still presents a stable and homogeneous phase even after 2 months at room temperature. The N-GQD dispersion was further utilized as sensing probes for the selective detection of copper ions (Cu2+), which is realized by the photoluminescence (PL) quenching of N-GQDs after adding Cu2+. The detection limit for Cu2+ was found to be 57 nM L−1, with superior selectivity in the presence of other commonly interfering metal ions. The presented results in this study provide a facile and high-efficiency method for synthesizing N-GQDs, with ultra-high detectivity and selectivity for Cu2+ detection, offering numerous opportunities for the development of biosensing, bioimaging, environment monitoring, and others. © 2020 Korean Physical Society
收录类别:EI;SCOPUS
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85078882599&doi=10.1016%2fj.cap.2020.01.018&partnerID=40&md5=ceac09f1ab77384db730c71d0d76dd3d
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