Synthesis of Water-Soluble Cadmium Selenide/Zinc Sulfide Quantum Dots on Functionalized Multiwalled Carbon Nanotubes for Efficient Covalent Synergism in Determining Environmental Hazardous Phenolic Compounds

2022 ◽  
Author(s):  
Kuo-Yuan Hwa ◽  
Anindita Ganguly ◽  
Aravindan Santhan ◽  
Tata Sanjay Kanna Sharma
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Dots ◽  
Phenolic Compounds ◽  
Cadmium Selenide ◽  
Zinc Sulfide ◽  
Multiwalled Carbon Nanotubes ◽  
Water Soluble ◽  
Multiwalled Carbon ◽  
Functionalized Multiwalled Carbon Nanotubes

Graphene quantum dots decorated with Fe3O4 nanoparticles/functionalized multiwalled carbon nanotubes as a new sensing platform for electrochemical determination of l-DOPA in agricultural products

2016 ◽  
Vol 8 (29) ◽  
pp. 5861-5868 ◽  
Author(s):  
M. Arvand ◽  
S. Abbasnejad ◽  
N. Ghodsi
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Dots ◽  
Multiwalled Carbon Nanotubes ◽  
Graphene Quantum Dots ◽  
Electrochemical Determination ◽  
Multiwalled Carbon ◽  
Sensing Platform ◽  
Development And Utilization ◽  
Functionalized Multiwalled Carbon Nanotubes

This paper describes the development and utilization of a new nanocomposite consisting of graphene quantum dots, magnetic nanoparticles and carboxylated multiwalled carbon nanotubes for glassy carbon electrode surface modification.

Origin of tunable photoluminescence from graphene quantum dots synthesized via pulsed laser ablation

2016 ◽  
Vol 18 (32) ◽  
pp. 22599-22605 ◽  
Author(s):  
S. R. M. Santiago ◽  
T. N. Lin ◽  
C. T. Yuan ◽  
J. L. Shen ◽  
H. Y. Huang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Dots ◽  
Laser Ablation ◽  
Multiwalled Carbon Nanotubes ◽  
Graphene Quantum Dots ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Multiwalled Carbon ◽  
One Step ◽  
Functionalized Multiwalled Carbon Nanotubes

A one-step synthesis of graphene quantum dots (GQDs) has been implemented using pulsed laser ablation (PLA) with carboxyl-functionalized multiwalled carbon nanotubes (MWCNTs).

Molecularly Imprinted Sensor for Ascorbic Acid Based on Gold Nanoparticles and Multiwalled Carbon Nanotubes

2020 ◽  
Vol 16 (7) ◽  
pp. 905-913
Author(s):  
Youyuan Peng ◽  
Qingshan Miao
Keyword(s):  
Carbon Nanotubes ◽  
Gold Nanoparticles ◽  
Ascorbic Acid ◽  
Multiwalled Carbon Nanotubes ◽  
Ph Value ◽  
Biological Fluids ◽  
Water Soluble ◽  
Multiwalled Carbon ◽  
Experimental Conditions ◽  
Molecularly Imprinted

Background: L-Ascorbic acid (AA) is a kind of water soluble vitamin, which is mainly present in fruits, vegetables and biological fluids. As a low cost antioxidant and effective scavenger of free radicals, AA may help to prevent diseases such as cancer and Parkinson’s disease. Owing to its role in the biological metabolism, AA has also been utilized for the therapy of mental illness, common cold and for improving the immunity. Therefore, it is very necessary and urgent to develop a simple, rapid and selective strategy for the detection of AA in various samples. Methods: The molecularly imprinted poly(o-phenylenediamine) (PoPD) film was prepared for the analysis of L-ascorbic acid (AA) on gold nanoparticles (AuNPs) - multiwalled carbon nanotubes (MWCNTs) modified glass carbon electrode (GCE) by electropolymerization of o-phenylenediamine (oPD) and AA. Experimental parameters including pH value of running buffer and scan rates were optimized. Scanning electron microscope (SEM), fourier-transform infrared (FTIR) spectra, cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were utilized for the characterization of the imprinted polymer film. Results: Under the selected experimental conditions, the DPV peak currents of AA exhibit two distinct linear responses ranging from 0.01 to 2 μmol L-1 and 2 to 100 μmol L-1 towards the concentrations of AA, and the detection limit was 2 nmol L-1 (S/N=3). Conclusion: The proposed electrochemical sensor possesses excellent selectivity for AA, along with good reproducibility and stability. The results obtained from the analysis of AA in real samples demonstrated the applicability of the proposed sensor to practical analysis.

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