Rational hydrothermal synthesis of graphene quantum dots with optimized luminescent properties for sensing applications

2022 ◽  
Vol 23 ◽  
pp. 100755
Author(s):  
M.H.M. Facure ◽  
R. Schneider ◽  
L.A. Mercante ◽  
D.S. Correa
2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Kenshin Takemura ◽  
Jun Satoh ◽  
Jirayu Boonyakida ◽  
Sungjo Park ◽  
Ankan Dutta Chowdhury ◽  
...  

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.


2017 ◽  
Vol 9 ◽  
pp. 350-371 ◽  
Author(s):  
Manila Ozhukil Valappil ◽  
Vijayamohanan K. Pillai ◽  
Subbiah Alwarappan

RSC Advances ◽  
2020 ◽  
Vol 10 (26) ◽  
pp. 15406-15429 ◽  
Author(s):  
Somayeh Tajik ◽  
Zahra Dourandish ◽  
Kaiqiang Zhang ◽  
Hadi Beitollahi ◽  
Quyet Van Le ◽  
...  

Carbon and graphene quantum dots for biological and sensing applications of neurotransmitters.


2021 ◽  
Vol 114 ◽  
pp. 108289
Author(s):  
S. Veeresh ◽  
H. Ganesh ◽  
Y.S. Nagaraju ◽  
M. Vandana ◽  
S.P. Ashokkumar ◽  
...  

2020 ◽  
Author(s):  
Kenshin Takemura ◽  
Jun Satoh ◽  
Jirayu Boonyakida ◽  
Sungjo Park ◽  
Ankan Dutta Chowdhury ◽  
...  

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 high-sensitivity and high-accuracy disposable electrode and evaluated it for several target viruses.Results: Conductive silicon rubber (CSR) was used to fabricate a disposable sensing matrix composed of nitrogen and sulfur-codoped 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 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 for up to 5 weeks, a vital long-term stability requirement 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 a potential diagnostic tool to monitor WSSV in the aquaculture industry.


Author(s):  
Rahul V. Khose ◽  
Prachi Bangde ◽  
Mahesh P. Bondarde ◽  
Pratik S. Dhumal ◽  
Madhuri A. Bhakare ◽  
...  

RSC Advances ◽  
2016 ◽  
Vol 6 (112) ◽  
pp. 110775-110788 ◽  
Author(s):  
Shenghai Zhou ◽  
Hongbo Xu ◽  
Wei Gan ◽  
Qunhui Yuan

This paper reviews recent activities in the preparation and fluorescence sensing applications of graphene quantum dots.


2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Mukesh Kumar Kumawat ◽  
Mukeshchand Thakur ◽  
Raju B. Gurung ◽  
Rohit Srivastava

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