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

N-doped graphene quantum dots as an effective photocatalyst for the photochemical synthesis of silver deposited porous graphitic C3N4 nanocomposites for nonenzymatic electrochemical H2O2 sensing

RSC Advances ◽  
2014 ◽  
Vol 4 (31) ◽  
pp. 16163-16171 ◽  
Author(s):  
Deli Jiang ◽  
Yuan Zhang ◽  
Haoyu Chu ◽  
Jie Liu ◽  
Jin Wan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Electrochemical Sensing ◽  
Photochemical Synthesis ◽  
Doped Graphene ◽  
H2o2 Sensing

N-doped GQDs served as an effective photocatalyst for the photochemical synthesis of silver deposited porous g-C3N4 nanocomposites for electrochemical sensing.

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.

Synthesis of Nitrogen- and Chlorine-Doped Graphene Quantum Dots for Cancer Cell Imaging

2018 ◽  
Vol 18 (6) ◽  
pp. 3793-3799 ◽  
Author(s):  
Md Nafiujjaman ◽  
Hwang Joon ◽  
Kwang Soo Kwak ◽  
Yong-kyu Lee
Keyword(s):  
Quantum Dots ◽  
Cancer Cell ◽  
Cell Imaging ◽  
Graphene Quantum Dots ◽  
Cancer Cell Imaging ◽  
Doped Graphene

Preparation of highly fluorescent sulfur doped graphene quantum dots for live cell imaging

2018 ◽  
Vol 197 ◽  
pp. 147-152 ◽  
Author(s):  
Kaixiang Jin ◽  
Hui Gao ◽  
Luhao Lai ◽  
Yuqian Pang ◽  
Shiyuan Zheng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Graphene Quantum Dots ◽  
Live Cell ◽  
Doped Graphene

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.

N,S Co-Doped Graphene Quantum Dots for Detection of Riboflavin and Cell Imaging

NANO ◽  
2021 ◽  
pp. 2150123
Author(s):  
Mengting Zhang ◽  
Xiaorong Li ◽  
Hong Xiao ◽  
Bin Zhao ◽  
Wei Bian
Keyword(s):  
Quantum Dots ◽  
Cell Imaging ◽  
Graphene Quantum Dots ◽  
Practical Application ◽  
X Ray ◽  
Pyrolysis Method ◽  
Doped Graphene ◽  
Low Cytotoxicity ◽  
Bright Blue Fluorescence ◽  
Bright Blue

Graphene quantum dots (GQDs) have been extensively used in biosensors and bioimaging. Heteroatom-doped GQDs can regulate material properties and endow them to improve structural and physicochemical properties. In this work, N,S-GQDs were prepared through a high-temperature pyrolysis method using L-cysteine and citric acid as the precursors. The morphology and structure of nanocomposites were identified by TEM, X-ray diffractometer (XRD), X-ray photoelectron spectrometer (XPS), and FTIR. The as-prepared N,S-GQDs show bright blue fluorescence with satisfactory fluorescence quantum yield. N,S-GQDs display significant response to riboflavin, achieving a low detection limit of 27[Formula: see text]nM. The reaction of N,S-GQDs to riboflavin is mainly governed by static quenching. The detection of riboflavin in real samples has been performed to demonstrate its practical application. The obtained N,S-GQDs have low cytotoxicity and have been applied successfully in cell imaging.

An acid-free microwave approach to prepare highly luminescent boron-doped graphene quantum dots for cell imaging

2015 ◽  
Vol 3 (47) ◽  
pp. 9109-9114 ◽  
Author(s):  
Xin Hai ◽  
Quan-Xing Mao ◽  
Wen-Jing Wang ◽  
Xiao-Feng Wang ◽  
Xu-Wei Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cell Imaging ◽  
Graphene Quantum Dots ◽  
Boron Doped ◽  
Doped Graphene ◽  
Bio Imaging

Highly luminescent graphene quantum dots (GQDs) are obtained by restoring the defects of GQDs via incorporation of B atoms into the graphene framework, which exhibits great potential in bio-imaging.

Sign in / Sign up

Export Citation Format

Share Document