scholarly journals Recent advances in heteroatom-doped graphene quantum dots for sensing applications

RSC Advances ◽  
2021 ◽  
Vol 11 (41) ◽  
pp. 25586-25615
Author(s):  
Neeraj Sohal ◽  
Banibrata Maity ◽  
Soumen Basu
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Sensing Applications ◽  
Recent Advances ◽  
Doped Graphene ◽  
Fluorescent Nanomaterials ◽  
Carbon Based

Graphene quantum dots (GQDs) are carbon-based fluorescent nanomaterials having various applications due to attractive properties.

scholarly journals Electrochemical detection of white spot syndrome virus with a silicone rubber disposable electrode composed of graphene quantum dots and gold nanoparticle-embedded polyaniline nanowires

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Kenshin Takemura ◽  
Jun Satoh ◽  
Jirayu Boonyakida ◽  
Sungjo Park ◽  
Ankan Dutta Chowdhury ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Spot Syndrome Virus ◽  
Graphene Quantum Dots ◽  
High Sensitivity ◽  
White Spot ◽  
Sensing Matrix ◽  
Disposable Electrode ◽  
Sensing Applications ◽  
Doped Graphene ◽  
White Spot Syndrome

Abstract Background With the enormous increment of globalization and global warming, it is expected that the number of newly evolved infectious diseases will continue to increase. To prevent damage due to these infections, the development of a diagnostic method for detecting a virus with high sensitivity in a short time is highly desired. In this study, we have developed a disposable electrode with high-sensitivity and accuracy to evaluate its performances for several target viruses. Results Conductive silicon rubber (CSR) was used to fabricate a disposable sensing matrix composed of nitrogen and sulfur-co-doped graphene quantum dots (N,S-GQDs) and a gold-polyaniline nanocomposite (AuNP-PAni). A specific anti-white spot syndrome virus (WSSV) antibody was conjugated to the surface of this nanocomposite, which was successfully applied for the detection of WSSV over a wide linear range of concentration from 1.45 × 102 to 1.45 × 105 DNA copies/ml, with a detection limit as low as 48.4 DNA copies/ml. Conclusion The engineered sensor electrode can retain the detection activity up to 5 weeks, to confirm its long-term stability, required for disposable sensing applications. This is the first demonstration of the detection of WSSV by a nanofabricated sensing electrode with high sensitivity, selectivity, and stability, providing as a potential diagnostic tool to monitor WSSV in the aquaculture industry.

Waste derived approach towards wealthy fluorescent N-doped graphene quantum dots for cell imaging and H2O2 sensing applications

2022 ◽  
Vol 266 ◽  
pp. 120453
Author(s):  
Rahul V. Khose ◽  
Prachi Bangde ◽  
Mahesh P. Bondarde ◽  
Pratik S. Dhumal ◽  
Madhuri A. Bhakare ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cell Imaging ◽  
Graphene Quantum Dots ◽  
Sensing Applications ◽  
Doped Graphene ◽  
H2o2 Sensing

Recent advances in carbon-based dots for electroanalysis

The Analyst ◽  
2016 ◽  
Vol 141 (9) ◽  
pp. 2619-2628 ◽  
Author(s):  
Ying Yulong ◽  
Peng Xinsheng
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Carbon Quantum Dots ◽  
Recent Advances ◽  
Carbon Based

Graphene quantum dots (GQDs) and carbon quantum dots (CQDs) demonstrate unique properties in the electroanalysis field, including electroresistance, electrochemiluminescence, electrochemical and photoelectrochemical sensors.

Sensing applications of luminescent carbon based dots

The Analyst ◽  
2015 ◽  
Vol 140 (22) ◽  
pp. 7468-7486 ◽  
Author(s):  
Yongqiang Dong ◽  
Jianhua Cai ◽  
Xu You ◽  
Yuwu Chi
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Carbon Quantum Dots ◽  
Luminescence Properties ◽  
Sensing Applications ◽  
Carbon Based

Carbon based dots (CDs) including carbon quantum dots and graphene quantum dots exhibit unique luminescence properties, such as photoluminescence (PL), chemiluminescence (CL) and electrochemiluminescence (ECL).

scholarly journals Electrochemical detection of white spot syndrome virus with a silicone rubber disposable electrode composed of graphene quantum dots and gold nanoparticle-embedded polyaniline nanowires

2020 ◽  
Author(s):  
Kenshin Takemura ◽  
Jun Satoh ◽  
Jirayu Boonyakida ◽  
Sungjo Park ◽  
Ankan Dutta Chowdhury ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Spot Syndrome Virus ◽  
Graphene Quantum Dots ◽  
High Sensitivity ◽  
White Spot ◽  
Sensing Matrix ◽  
Disposable Electrode ◽  
Sensing Applications ◽  
Doped Graphene ◽  
White Spot Syndrome

Abstract Background: With the enormous increment of globalization and global warming, it is expected that the number of newly evolved infectious diseases will continue to increase. To prevent damage due to these infections, the development of a diagnostic method for detecting a virus with high sensitivity in a short time is highly desired. In this study, we have developed a disposable electrode with high-sensitivity and accuracy to evaluate its performances for several target viruses.Results: Conductive silicon rubber (CSR) was used to fabricate a disposable sensing matrix composed of nitrogen and sulfur-co-doped graphene quantum dots (N,S-GQDs) and a gold-polyaniline nanocomposite (AuNP-PAni). A specific anti-white spot syndrome virus (WSSV) antibody was conjugated to the surface of this nanocomposite, which was successfully applied for the detection of WSSV over a wide linear range of concentration from 1.45 × 102 to 1.45 × 10⁵ DNA copies/ml, with a detection limit as low as 48.4 DNA copies/ml.Conclusion: The engineered sensor electrode can retain the detection activity up to 5 weeks, to confirm its long-term stability, required for disposable sensing applications. This is the first demonstration of the detection of WSSV by a nanofabricated sensing electrode with high sensitivity, selectivity, and stability, providing as a potential diagnostic tool to monitor WSSV in the aquaculture industry.

Time-efficient syntheses of nitrogen and sulfur co-doped graphene quantum dots with tunable luminescence and their sensing applications

RSC Advances ◽  
2016 ◽  
Vol 6 (43) ◽  
pp. 36554-36560 ◽  
Author(s):  
Hongbo Xu ◽  
Shenghai Zhou ◽  
Lili Xiao ◽  
Qunhui Yuan ◽  
Wei Gan
Keyword(s):  
Quantum Dots ◽  
Fluorescence Probe ◽  
Graphene Quantum Dots ◽  
Selective Detection ◽  
Sensing Applications ◽  
Doped Graphene ◽  
Co Doped

N,S co-doped GQDs with fast preparation and tunable fluorescence were developed and employed as fluorescence probe for selective detection of Fe3+.

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