Microplasma-assisted rapid synthesis of luminescent nitrogen-doped carbon dots and their application in pH sensing and uranium detection

Nanoscale ◽  
2015 ◽  
Vol 7 (48) ◽  
pp. 20743-20748 ◽  
Author(s):  
Zhe Wang ◽  
Yuexiang Lu ◽  
Hang Yuan ◽  
Zhonghua Ren ◽  
Chao Xu ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Carbon Dots ◽  
Ph Sensing ◽  
Rapid Synthesis ◽  
Nitrogen Doped ◽  
One Step ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

We developed a rapid one-step atmospheric-pressure microplasma-assisted method to prepare carbon dots for pH sensing and uranium detection.

scholarly journals Detection of Melamine Based on the Fluorescence Changes of Nitrogen-Doped Carbon Dots

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Wenzhi Yin ◽  
Chaoqun Ma ◽  
Tuo Zhu ◽  
Jiao Gu ◽  
Chun Zhu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Detection Method ◽  
Limit Of Detection ◽  
High Sensitivity ◽  
Mercury Ions ◽  
Measuring Range ◽  
Nitrogen Doped ◽  
One Step ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

In order to determine the concentration of melamine, nitrogen-doped carbon dots (NCDs) were synthesized in one step as a fluorescent probe. Uric acid and diethylenetriamine were used as carbon source and nitrogen source, respectively. The experimental results showed that the fluorescence of NCDs can be quenched by mercury ions (Hg2+). Due to the strong coordination affinity between the carbon-nitrogen heterocyclic of melamine and Hg2+, part of Hg2+ coordinated with melamine when melamine was mixed with Hg2+. Then, the fluorescence of the added NCDs was quenched by the remaining Hg2+. Therefore, the concentration of melamine could be determined. The results show that the method has high sensitivity in wide measuring range that the linear ranges are 50–400 μg/L and 800–2500 μg/L, and the R2 is 0.997 and 0.988, respectively, with the limit of detection (LOD) of 21.76 μg/L. The NCDs are easy to fabricate, and the detection method is easy to implement. In this study, a new method for melamine detection was established, and the proposed method for melamine detection can provide some insights for food safety detection.

Nitrogen-doped carbon dots as fluorescent probe for detection of curcumin based on the inner filter effect

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 95054-95060 ◽  
Author(s):  
Qingyan Zhang ◽  
Caihong Zhang ◽  
Zengbo Li ◽  
Jinyin Ge ◽  
Chenzhong Li ◽  
...  
Keyword(s):  
Citric Acid ◽  
Carbon Source ◽  
Nitrogen Source ◽  
Carbon Dots ◽  
Inner Filter Effect ◽  
Nitrogen Doped ◽  
Filter Effect ◽  
One Step ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

A facile, economical and green one-step hydrothermal method for N-doped CDs was presented by using citric acid as carbon source and urea as nitrogen source. The fluorescence of N-doped CDs quenched dramatically from curcumin via inner filter effect.

One-step synthesis of robust nitrogen-doped carbon dots: acid-evoked fluorescence enhancement and their application in Fe3+ detection

2015 ◽  
Vol 3 (34) ◽  
pp. 17747-17754 ◽  
Author(s):  
Yang Liu ◽  
Yanan Liu ◽  
Soo-Jin Park ◽  
Yifan Zhang ◽  
Taewoo Kim ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Fluorescence Enhancement ◽  
Alginic Acid ◽  
Nitrogen Doped ◽  
One Step ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Robust and highly fluorescent N-doped carbon dots (CDs) are obtained from a hybrid source, alginic acid and ethanediamine.

Rapid synthesis of nitrogen doped carbon dots with green fluorescent for bio-imaging

2019 ◽  
Vol 98 ◽  
pp. 109486 ◽  
Author(s):  
Junli Wang ◽  
Shicai Wang ◽  
Yingying Wei ◽  
Lin Chen ◽  
Yongzhen Yang ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Rapid Synthesis ◽  
Nitrogen Doped ◽  
Bio Imaging ◽  
Green Fluorescent ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Green preparation of carbon dots for intracellular pH sensing and multicolor live cell imaging

2016 ◽  
Vol 4 (44) ◽  
pp. 7130-7137 ◽  
Author(s):  
Wen-Jing Wang ◽  
Jun-Mei Xia ◽  
Ji Feng ◽  
Meng-Qi He ◽  
Ming-Li Chen ◽  
...  
Keyword(s):  
Intracellular Ph ◽  
Carbon Dots ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Emission Feature ◽  
Ph Sensing ◽  
Nitrogen Doped ◽  
Multicolor Imaging ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Nitrogen-doped carbon dots exhibit a distinct pH-sensitive/excitation-dependent photoluminescence emission feature within pH 4.0–8.0, facilitating intracellular pH sensing and multicolor imaging of live HeLa cells.

N-Doped carbon dots: green and efficient synthesis on a large-scale and their application in fluorescent pH sensing

2017 ◽  
Vol 41 (19) ◽  
pp. 10607-10612 ◽  
Author(s):  
Xiaoxia Liu ◽  
Jinrong Liu ◽  
Baozhan Zheng ◽  
Lei Yan ◽  
Jianyuan Dai ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Large Scale ◽  
Ph Sensitive ◽  
Ph Sensing ◽  
Efficient Synthesis ◽  
Nitrogen Doped ◽  
Sensitive Property ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

A green and efficient anhydrous method was developed to synthesize nitrogen doped carbon dots (N-CDs) on a large-scale, and the N-CDs exhibited excellent reversible pH-sensitive property.

One-step hydrothermal synthesis and optical properties of PEG-passivated nitrogen-doped carbon dots

RSC Advances ◽  
2015 ◽  
Vol 5 (10) ◽  
pp. 7395-7400 ◽  
Author(s):  
Ben-Xing Zhang ◽  
Gang-Yi Zhang ◽  
Hui Gao ◽  
Shao-Hui Wu ◽  
Jian-Hua Chen ◽  
...  
Keyword(s):  
Optical Properties ◽  
Hydrothermal Synthesis ◽  
Luminescence Intensity ◽  
Carbon Dots ◽  
Nitrogen Doped ◽  
One Step ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

PEG-passivation enhanced the luminescence intensity of nitrogen-doped carbon dots markedly.

Hg2+ detection, pH sensing and cell imaging based on bright blue-fluorescent N-doped carbon dots

The Analyst ◽  
2020 ◽  
Vol 145 (24) ◽  
pp. 8030-8037
Author(s):  
Dan Chang ◽  
Lin Li ◽  
Lihong Shi ◽  
Yongxing Yang
Keyword(s):  
Carbon Dots ◽  
Cell Imaging ◽  
Ph Sensing ◽  
Nitrogen Doped ◽  
Sensing Platform ◽  
Sensitive Determination ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon ◽  
Bright Blue

A multifunctional sensing platform based on bright blue-fluorescent nitrogen-doped carbon dots (N-CDs) has been ingeniously designed for the sensitive determination of Hg2+ and pH.

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