scholarly journals Synthesis of Carbon dots-based Fluorescent Probe for the High Selective Detection of Mercury Ions

2018 ◽  
Author(s):  
Li Song ◽  
Yanyan Cui
Keyword(s):  
Metal Ions ◽  
Carbon Dots ◽  
Water Solution ◽  
Water System ◽  
Average Diameter ◽  
Transition Metal Ions ◽  
Environmental Water ◽  
Mercury Ions ◽  
One Pot ◽  
Fluorescent Carbon Dots

Fluorescent carbon dots (C-dots) were synthesized by one pot hydrothermal treatment of garlic juice at 180 °C for 7h. The as-prepared C-dots with an average diameter of 2.13±0.71 nm can be well dispersed, and show absinthe fluorescence with a quantum yield of 8.9% in water. The C-dots were fully characterized by TEM, XPS, XRD, and FTIR, respectively. Additionally, the as-prepared C-dots reveal nearly nontoxic to SW480 cells and can be used for cell imaging. The water solution of C-dots show sensitivity to pH values and metal ions, and also have a high selectivity to the Hg2+ ion among other transition metal ions, and achieve a high sensitive detection with the detection limit of 0.45 μM. The fluorescent C-dots are expected to be useful for the evaluation of mercury ions in environmental water system.

One-pot synthesis of highly fluorescent Fe2+-doped carbon dots for a dual-emissive nanohybrid for the detection of zinc ions and histidine

2018 ◽  
Vol 42 (16) ◽  
pp. 13651-13659 ◽  
Author(s):  
Bingyan Han ◽  
Tingting Peng ◽  
Mingbo Yu ◽  
Chen Chi ◽  
Ying Li ◽  
...  
Keyword(s):  
Metal Ions ◽  
Carbon Dots ◽  
Zinc Ions ◽  
Fluorescence Sensing ◽  
One Pot ◽  
One Pot Synthesis ◽  
The Common ◽  
Carbon Resource ◽  
Doped Carbon Dots ◽  
Fluorescent Carbon Dots

Fe2+ was confirmed to be the only definitive one of the common metal ions to synthesize the highly fluorescent carbon dots with proline as the carbon resource at 80 °C for visual fluorescence sensing Zn2+ and histidine, respectively.

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.

Ratiometric detection of heavy metal ions using fluorescent carbon dots

2019 ◽  
Vol 6 (4) ◽  
pp. 1121-1130 ◽  
Author(s):  
Francisco Yarur ◽  
Jun-Ray Macairan ◽  
Rafik Naccache
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Carbon Dots ◽  
Heavy Metal Ions ◽  
Ratiometric Detection ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Classical methods for the detection of heavy metal ions in water are tedious and time consuming.

Surface adhered fluorescent carbon dots extracted from the harmful diesel soot for sensing Fe(iii) and Hg(ii) ions

2021 ◽  
Author(s):  
Gunture ◽  
Jaidev Kaushik ◽  
Deepika Saini ◽  
Ravindra Singh ◽  
Prashant Dubey ◽  
...  
Keyword(s):  
Metal Ions ◽  
Aqueous Medium ◽  
Carbon Material ◽  
Carbon Dots ◽  
Cost Effective ◽  
Diesel Soot ◽  
Isolation Method ◽  
Green Fluorescent ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

A simple cost effective isolation method has been described for the extraction of surface-adhered blue–green fluorescent carbon material from the diesel soot and used them for the selective sensing of Fe(iii) and toxic Hg(ii) metal ions in aqueous medium.

scholarly journals One‐Pot Hydrothermal Synthesis of Elements (B, N, P)‐Doped Fluorescent Carbon Dots for Cell Labelling, Differentiation and Outgrowth of Neuronal Cells

2019 ◽  
Vol 4 (14) ◽  
pp. 4222-4232 ◽  
Author(s):  
Vijay B. Kumar ◽  
Raj Kumar ◽  
Ofir Friedman ◽  
Yuval Golan ◽  
Aharon Gedanken ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Carbon Dots ◽  
Neuronal Cells ◽  
Cell Labelling ◽  
One Pot ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Protein as the source for synthesizing fluorescent carbon dots by a one-pot hydrothermal route

RSC Advances ◽  
2012 ◽  
Vol 2 (23) ◽  
pp. 8599 ◽  
Author(s):  
Zhe Zhang ◽  
Jinhui Hao ◽  
Jing Zhang ◽  
Bailin Zhang ◽  
Jilin Tang
Keyword(s):  
Carbon Dots ◽  
Hydrothermal Route ◽  
One Pot ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

scholarly journals Rapid Preparation of Fluorescent Carbon Dots from Pine Needles for Chemical Analysis

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 66
Author(s):  
Hweiyan Tsai ◽  
Kaiying Chang ◽  
Wanshing Lee ◽  
C. Bor Fuh
Keyword(s):  
Carbon Dots ◽  
Reaction Times ◽  
Pine Needles ◽  
One Pot ◽  
Rapid Preparation ◽  
Necrosis Factor Alpha ◽  
Tnf Α ◽  
Potential Applications ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Fluorescent carbon dots with blue, green, and red emissions were rapidly prepared from modified pine needles through microwave irradiation in a one-pot reaction. The fluorescence intensity and emission versatility for a carbon source were experimentally optimized. The reaction times were under 10 min and the reaction temperatures were lower than 220 °C. Potential applications of magnetic fluorescence-linked immunoassays of carcinoembryonic antigen (CEA) and tumor necrosis factor-alpha (TNF-α) were presented. The detection limits for CEA and TNF-α (3.1 and 2.8 pg mL−1, respectively) are lower than those presented in other reports, whereas the linear ranges for CEA and TNF-α (9 pg mL−1 to 18 ng mL−1 and 8.5 pg mL−1 to 17 ng mL−1, respectively) are wider than those presented in other reports. Magnetic immunoassays with fluorescent CDs prepared from pine needles can enable rapid, sensitive, and selective detections for biochemical analysis.

One-pot synthesis of hydrophilic and hydrophobic fluorescent carbon dots using deep eutectic solvents as designer reaction media

2018 ◽  
Vol 53 (22) ◽  
pp. 15362-15375 ◽  
Author(s):  
Selda Doğan Çalhan ◽  
Melis Özge Alaş ◽  
Müge Aşık ◽  
F. Nazlı Dinçer Kaya ◽  
Rükan Genç
Keyword(s):  
Carbon Dots ◽  
Deep Eutectic Solvents ◽  
One Pot ◽  
One Pot Synthesis ◽  
Reaction Media ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Nucleoside-based fluorescent carbon dots for discrimination of metal ions

2020 ◽  
Vol 8 (16) ◽  
pp. 3640-3646 ◽  
Author(s):  
Tieli Zhou ◽  
Jinyi Zhang ◽  
Biwu Liu ◽  
Shihong Wu ◽  
Peng Wu ◽  
...  
Keyword(s):  
Metal Ions ◽  
Carbon Dots ◽  
Sensor Array ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Using nucleosides and citrate as starting materials, a series of fluorescent carbon dots were synthesized showing different quenching properties by metal ions for their detection by a sensor array.

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