A highly selective fluorescence sensing platform for nanomolar Hg(II) detection based on cytosine derived quantum dot
Luo, L (Luo, Liang); Song, T (Song, Ting); Wang, HQ (Wang, Haoqiang); Yuan, QH (Yuan, Qunhui); Zhou, SH (Zhou, Shenghai)
2018
发表期刊SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷号193期号:3页码:95-101
摘要

Inspired by low toxicity and good biocompatibility of biomass derived quantum dot (QD), we herein developed a cytosine derived quantum dot, namely cyt-dot, via a one-step hydrothermal synthesis. The as-prepared cyt-dot emits blue fluorescence (FL) containing abundant oxygen (20.6 at.%) and nitrogen (24.1 at.%) contents. The cyt-dot based sensing platform shows exclusive selectivity for Hg(II) while being insensitive towards Fe(III) and Ag(l), which are important interference that usually cannot be ruled out. The detection limit for Hg(II) is of 11 nM, which is very close to the guideline value of 10 nM allowed by the U.S. Environmental Protection Agency in drinking water. In real water sample analyses, the present sensing platform can fulfil satisfied recoveries ranging from 100% to 108%. Besides, the acidity of solution has almost no effect on the sensing performance of the cyt-dot in a pH range of 5-8, suggesting its potential applications in sensing and bio-imaging.

关键词Cyt-dot Cytosine Hg(Ii) Label Free Fluorescence Sensing
DOI10.1016/j.saa.2017.11.044
收录类别SCI
WOS记录号WOS:000424962900013
引用统计
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/5218
专题中国科学院特殊环境功能材料与器件重点试验室
作者单位1.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Harbin Inst Technol, Sch Mat Sci & Engn, Shenzhen 518055, Peoples R China
4.Hebei Normal Univ Nationalities, Coll Chem & Chem Engn, Chengde 067000, Peoples R China
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GB/T 7714
Luo, L ,Song, T ,Wang, HQ ,et al. A highly selective fluorescence sensing platform for nanomolar Hg(II) detection based on cytosine derived quantum dot[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2018,193(3):95-101.
APA Luo, L ,Song, T ,Wang, HQ ,Yuan, QH ,&Zhou, SH .(2018).A highly selective fluorescence sensing platform for nanomolar Hg(II) detection based on cytosine derived quantum dot.SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,193(3),95-101.
MLA Luo, L ,et al."A highly selective fluorescence sensing platform for nanomolar Hg(II) detection based on cytosine derived quantum dot".SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 193.3(2018):95-101.
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