Carbon dots–MnO2 nanocomposites for As(iii) detection in groundwater with high sensitivity and selectivity

2020 ◽  
Vol 12 (46) ◽  
pp. 5572-5580
Author(s):  
Xiaoyu He ◽  
Yong Li ◽  
Chao Yang ◽  
Liqiang Lu ◽  
Yulun Nie ◽  
...  
Keyword(s):  
Human Health ◽  
Carbon Dots ◽  
High Sensitivity ◽  
Environmental Safety ◽  
Sensitivity And Selectivity

As(iii) pollution has caused increasing concern due to its significant impact in environmental safety and human health.

A metal-organic framework featuring highly sensitive fluorescence sensing for Al3+ ion

CrystEngComm ◽  
2021 ◽  
Author(s):  
Yang Qiao ◽  
Zeqi Li ◽  
Mei-Hui Yu ◽  
Ze Chang ◽  
Xian-He Bu
Keyword(s):  
Metal Ions ◽  
Human Health ◽  
Metal Organic Framework ◽  
High Sensitivity ◽  
Fluorescence Sensing ◽  
Sensing Material ◽  
Highly Sensitive ◽  
Sensitivity And Selectivity ◽  
Metal Organic ◽  
Organic Framework

High sensitivity and selectivity for detection of metal ions are very important to protect human health. Fluorescent metal-organic framework (MOF) as a new sensing material has attracted more and more...

Green preparation of carbon dots for Hg2+ detection and cell imaging

2020 ◽  
Vol 10 (11) ◽  
pp. 1777-1787
Author(s):  
Yadian Xie ◽  
Shanshan Wang ◽  
Ning Fu ◽  
Yan Yang ◽  
Xingliang Liu ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Carbon Dots ◽  
High Sensitivity ◽  
Amorphous Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Carbon And Nitrogen ◽  
Transmission Electron ◽  
Sensitivity And Selectivity ◽  
Ft Ir

Carbon dots (CDs) also nitrogen-doped CDs (N-CDs) were produced by green hydrothermal synthesis using Pea and ethanediamine as the carbon and nitrogen source, separately. Transmission electron microscopy (TEM) images displayed that the prepared CDs and N-CDs were well dispersed, had a spherical morphology. X-ray diffraction (XRD) figures of CDs and N-CDs presented a graphitic amorphous structure. Fourier transform infrared spectroscopy (FT-IR) verified that CDs and N-CDs carried many different hydrophilic groups (for example hydroxyl, carboxyl/carbonyl, amide, amino groups) on the surface, X-ray photoelectron spectroscopy (XPS) together verified this result. However, the optical properties and fluorescence quantum yield for N-CDs were obviously superior to those of CDs. Furthermore, the prepared N-CDs displayed outstanding advantages including low toxicity, satisfactory biocompatibility, and excellent chemical stability. More prominently, the prepared N-CDs could detect Hg2+ ions with high sensitivity and selectivity in both water samples and HeLa cells.

Valine-derived carbon dots with colour-tunable fluorescence for the detection of Hg2+ with high sensitivity and selectivity

2015 ◽  
Vol 39 (8) ◽  
pp. 6201-6206 ◽  
Author(s):  
Chunfang Zhang ◽  
Zhongbo Hu ◽  
Li Song ◽  
Yanyan Cui ◽  
Xiangfeng Liu
Keyword(s):  
Carbon Dots ◽  
High Sensitivity ◽  
Sensitivity And Selectivity ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Green and yellow fluorescent carbon dots with high sensitivity and selectivity for Hg2+ were synthesized from H3PO4 oxidation of valine.

Highly selective and sensitive sensing for Al3+ and F− based on green photoluminescent carbon dots

RSC Advances ◽  
2016 ◽  
Vol 6 (99) ◽  
pp. 97346-97351 ◽  
Author(s):  
Xiang-Ying Sun ◽  
Lu-Lu Wu ◽  
Jiang-Shan Shen ◽  
Xue-Gong Cao ◽  
Cunjin Wen ◽  
...  
Keyword(s):  
Metal Ions ◽  
Carbon Dots ◽  
High Sensitivity ◽  
Sensitivity And Selectivity

A novel sensor for metal ions by mean of CDs with a PL enhancement response, which shows high sensitivity and selectivity. Furthermore, the CDs-Al3+ ions system could be employed to probe F− anions based on a PL “on–off” model.

Highly selective and sensitive fluorescence probe based on thymine-modified carbon dots for Hg2+ and l-cysteine detection

RSC Advances ◽  
2015 ◽  
Vol 5 (108) ◽  
pp. 89121-89127 ◽  
Author(s):  
Hui Xu ◽  
Shanshan Huang ◽  
Caiyun Liao ◽  
Yang Li ◽  
Baozhan Zheng ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Fluorescence Probe ◽  
High Sensitivity ◽  
Sensitivity And Selectivity

The as-prepared thymine-modified carbon dots were applied to as a sensor for detecting Hg2+ and l-cysteine with high sensitivity and selectivity.

scholarly journals Highly selective fluorescent carbon dots probe for mercury(ii) based on thymine–mercury(ii)–thymine structure

RSC Advances ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 3982-3988 ◽  
Author(s):  
Yong Li ◽  
Zhan-Yao Zhang ◽  
Hao-Fan Yang ◽  
Guang Shao ◽  
Feng Gan
Keyword(s):  
Carbon Dots ◽  
Fluorescent Sensor ◽  
High Sensitivity ◽  
Sensitivity And Selectivity ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

A novel thymine-functional fluorescent sensor was developed for Hg2+detection with high sensitivity and selectivity.

scholarly journals A Significant Fluorescent Aptamer Sensor Based on Carbon Dots and Graphene Oxide for Highly Selective Detection of Progesterone

2021 ◽  
Author(s):  
Hanyue Cui ◽  
Huan Lu ◽  
Li Li ◽  
Ya-ping Ding ◽  
Yao Fu
Keyword(s):  
Graphene Oxide ◽  
Carbon Dots ◽  
Energy Transfer Process ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
High Sensitivity ◽  
High Specificity ◽  
Optimal Conditions ◽  
Sensitivity And Selectivity ◽  
Aptamer Sensor

Abstract In this paper, a fluorescent aptamer sensor was constructed based on the carbon dots and graphene oxide. This sensor combines the excellent fluorescence performance of carbon dots with the high specificity of aptamers to detect progesterone with high sensitivity and selectivity. In the absence of progesterone, the carbon dots-aptamer system and graphene oxide form a fluorescence resonance energy transfer process(FRET), which quenches the fluorescence of the carbon dots. When progesterone is added, the aptamer specifically binds to progesterone, resulting the fluorescence of the carbon dots is recovered. At optimal conditions, the fluorescence intensity recovered by the carbon dots has a linear relationship with the concentration of progesterone in the range of 0.1-120 nM, and the detection limit is 3.3×10 -11 M. Besides, the sensor has satisfactory detection results of progesterone in milk, indicating that this method has a enormous potential for application in food safety.

N-doped carbon dots with high sensitivity and selectivity for hypochlorous acid detection and its application in water

2015 ◽  
Vol 7 (12) ◽  
pp. 5311-5317 ◽  
Author(s):  
Dongmei Wang ◽  
Hui Xu ◽  
Baozhan Zheng ◽  
Yang Li ◽  
Maoping Liu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Hypochlorous Acid ◽  
High Sensitivity ◽  
Sensitivity And Selectivity ◽  
Doped Carbon Dots

The as-prepared N-doped CDs were applied as a HOCl sensor with high sensitivity and selectivity.

Schottky diodes based on 2D materials for environmental gas monitoring: a review on emerging trends, recent developments and future perspectives

2021 ◽  
Author(s):  
Minu Mathew ◽  
Chandra Sekhar Rout
Keyword(s):  
Gas Sensing ◽  
2D Materials ◽  
Schottky Diodes ◽  
High Sensitivity ◽  
Future Perspectives ◽  
Working Temperature ◽  
Emerging Trends ◽  
Gas Sensing Properties ◽  
Recent Developments ◽  
Sensitivity And Selectivity

This review details the fundamentals, working principles and recent developments of Schottky junctions based on 2D materials to emphasize their improved gas sensing properties including low working temperature, high sensitivity, and selectivity.

Sign in / Sign up

Export Citation Format

Share Document