Highly selective histamine assay via SERS: Based on the signal enhancement of carbon dots and the fluorescence quenching of gold nanoparticles

2022 ◽  
Vol 350 ◽  
pp. 130866
Author(s):  
Dezhi Yang ◽  
Hong Li ◽  
Qiulan Li ◽  
Kexiang Li ◽  
Feijian Xiao ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Fluorescence Quenching ◽  
Carbon Dots ◽  
Signal Enhancement

Nitrogen-doped carbon dots from Hutai-8 grape skin and their application in Hg2+ detection

2020 ◽  
Vol 16 ◽  
Author(s):  
Pan Zhang ◽  
Shun-Sheng Zhao ◽  
JiaJia Wang ◽  
Xiang Rong Liu
Keyword(s):  
Heavy Metal ◽  
Carbon Source ◽  
Fluorescence Quenching ◽  
Hydrothermal Method ◽  
Water Samples ◽  
Carbon Dots ◽  
Mercury Ions ◽  
Grape Skin ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Background: In recent years, environmental pollution and heavy metal pollution caused by rapid urbanization and industrialization have become increasingly serious. Among them, mercury (II) ion (Hg2+) is one of the highly toxic heavy metal ions, and its pollution comes from various natural resources and human activities. Therefore, people attach great importance to the development of analytical methods for effective analysis and sensitive detection of Hg2+ . Objective: Using grape skin as a green and environmental friendly carbon source, to synthesize fluorescent carbon dots, and try to apply them to the detect the concentration of Hg2+ in water. Method: Using "Hutai No. 8" grape skin as carbon source, fluorescent carbon dots were synthesized by one-step hydrothermal method. Structure and fluorescent properties of the carbon dots were tested using TEM, XPS, XRD and other characterization instruments, and their utilization on detection of mercury ions in the actual water samples was explored. Results: The CDs had a particle size of about 4.8 nm and a spherical shape. There are N-H, C-N, C=O and other functional groups on the surface. It was found that Hg2+ has obvious fluorescence quenching effect on CDs, and thus CDs fluorescence quenching method to detect the concentration Hg2+ was established, and the detection limit is 3.7 μM, which could be applied to test the concentration of Hg2+ in water samples. Conclusion: Using grape skin as carbon source, fluorescent carbon dots were successfully synthesized by hydrothermal method. Carbon dots were used to detect mercury ions in water, and a method for detecting mercury ions in actual water samples was established.

scholarly journals Fluorescence quenching/enhancement surface assays: Signal manipulation using silver-coated gold nanoparticles

2008 ◽  
Vol 454 (1-3) ◽  
pp. 85-90 ◽  
Author(s):  
Evgenia G. Matveeva ◽  
Tanya Shtoyko ◽  
Ignacy Gryczynski ◽  
Irina Akopova ◽  
Zygmunt Gryczynski
Keyword(s):  
Gold Nanoparticles ◽  
Fluorescence Quenching

scholarly journals Degradation of Methyl Parathion, a common pesticide and fluorescence quenching of Rhodamine B, a carcinogen using β-d glucan stabilized gold nanoparticles

2018 ◽  
Vol 22 (8) ◽  
pp. 937-948 ◽  
Author(s):  
Sutanuka Pattanayak ◽  
Sharmila Chakraborty ◽  
Suman Biswas ◽  
Dipankar Chattopadhyay ◽  
Mukut Chakraborty
Keyword(s):  
Gold Nanoparticles ◽  
Fluorescence Quenching ◽  
Rhodamine B ◽  
Methyl Parathion

Optical Detection of Thiol Drugs by Core–Shell Luminous Carbon Dots—Gold Nanoparticles System

Plasmonics ◽  
2018 ◽  
Vol 13 (6) ◽  
pp. 2239-2248 ◽  
Author(s):  
Akansha Mehta ◽  
Amit Mishra ◽  
Soumen Basu
Keyword(s):  
Gold Nanoparticles ◽  
Carbon Dots ◽  
Optical Detection ◽  
Core Shell
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