Rapid detection of Cr(VI) ions based on cobalt(II)-doped carbon dots

	Rapid detection of Cr(VI) ions based on cobalt(II)-doped carbon dots
	Wang, Yu 2; Wang, Han 1; Wang, Ji-Hui 1; Feng, Liang 2; Xiao, Shan 1; Zhang, Hong-Yu 1
刊名	BIOSENSORS & BIOELECTRONICS
	2017-01-15
卷号	87 页码:46-52
关键词	Cobalt Carbon dot Rapid detection Cr(VI) Water Fish
英文摘要	A new type of cobalt(II)-doped carbon dots (CCDs) have been fabricated and used successfully for sensing Cr(VI) ions on the basis of photoluminescence quenching. The structural characterization of as-obtained CCDs was thoroughly performed by transmission electron microscopy (TEM), Fourier transform infrared (Fr-IR) and X-ray photoelectron (XPS) spectroscopy. The optical properties were also determined by absorption and fluorescence spectra. By recording 3D fluorescence spectrum, a unique intra-particle Forster resonance energy transfer (FRET) system was investigated. In addition, fluorescence quenching of CCDs was observed in the presence of Cr(VI) ions due to inner filter effect. A good linear relationship between the concentration of Cr(VI) ions and fluorescent intensity was obtained in the range from 5 mu M to 125 pM (R-2=0.99), and the limit of detection was calculated as 1.17 mu M(0.12 ppm for Cr(VI)). Importantly, this method was capable of rapidly detecting Cr(VI) ions in tap water and fish samples, which may be helpful in risk reduction of intake Cr(VI) contamination from water and seafood. (C) 2016 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]	Biophysics ; Biotechnology & Applied Microbiology ; Chemistry, Analytical ; Electrochemistry ; Nanoscience & Nanotechnology
研究领域[WOS]	Biophysics ; Biotechnology & Applied Microbiology ; Chemistry ; Electrochemistry ; Science & Technology - Other Topics
关键词[WOS]	ATOMIC-ABSORPTION-SPECTROMETRY ; QUANTUM DOTS ; FLUORESCENT-PROBE ; GREEN SYNTHESIS ; SENSITIVE DETECTION ; FACILE SYNTHESIS ; NITROGEN ; CHROMIUM(VI) ; SENSOR ; WATER
收录类别	SCI
语种	英语
WOS记录号	WOS:000390499600008
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/150511]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Dalian Polytech Univ, Sch Food Sci & Technol, Dalian 116034, Liaoning, Peoples R China 2.Chinese Acad Sci, Key Lab Separat Sci Analyt Chem, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yu,Wang, Han,Wang, Ji-Hui,et al. Rapid detection of Cr(VI) ions based on cobalt(II)-doped carbon dots[J]. BIOSENSORS & BIOELECTRONICS,2017,87:46-52.
APA	Wang, Yu,Wang, Han,Wang, Ji-Hui,Feng, Liang,Xiao, Shan,&Zhang, Hong-Yu.(2017).Rapid detection of Cr(VI) ions based on cobalt(II)-doped carbon dots.BIOSENSORS & BIOELECTRONICS,87,46-52.
MLA	Wang, Yu,et al."Rapid detection of Cr(VI) ions based on cobalt(II)-doped carbon dots".BIOSENSORS & BIOELECTRONICS 87(2017):46-52.