Non-Enzymatic Amperometric Glucose Biosensor from Zinc Oxide Nanoparticles Decorated Multi-Walled Carbon Nanotubes

2011 ◽  
Vol 11 (6) ◽  
pp. 4684-4691 ◽  
Author(s):  
Tessy Theres Baby ◽  
S. Ramaprabhu
Keyword(s):  
Carbon Nanotubes ◽  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Glucose Biosensor ◽  
Oxide Nanoparticles ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

scholarly journals Organic–Inorganic Nanohybrid Electrochemical Sensors from Multi-Walled Carbon Nanotubes Decorated with Zinc Oxide Nanoparticles and In-Situ Wrapped with Poly(2-methacryloyloxyethyl ferrocenecarboxylate) for Detection of the Content of Food Additives

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1388
Author(s):  
Jing-Wen Xu ◽  
Zhuo-Miao Cui ◽  
Zhan-Qing Liu ◽  
Feng Xu ◽  
Ya-Shao Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Zinc Oxide ◽  
Electron Microscope ◽  
Zinc Oxide Nanoparticles ◽  
Electrochemical Sensors ◽  
Oxide Nanoparticles ◽  
X Ray ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

An electrochemical sensor for detection of the content of aspartame was developed by modifying a glassy carbon electrode (GCE) with multi-walled carbon nanotubes decorated with zinc oxide nanoparticles and in-situ wrapped with poly(2-methacryloyloxyethyl ferrocenecarboxylate) (MWCNTs@ZnO/PMAEFc). MWCNTs@ZnO/PMAEFc nanohybrids were prepared through reaction of zinc acetate dihydrate with LiOH·H2O, followed by reversible addition-fragmentation chain transfer polymerization of 2-methacryloyloxyethyl ferrocenecarboxylate, and were characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), Raman, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), atomic force microscope (AFM), scanning electron microscope (SEM), and transmission electron microscope (TEM) techniques. The electrochemical properties of the prepared nanohybrids with various composition ratios were examined by cyclic voltammetry (CV), and the trace additives in food and/or beverage was detected by using differential pulse voltammetry (DPV). The experimental results indicated that the prepared nanohybrids for fabrication of electrochemical modified electrodes possess active electroresponse, marked redox current, and good electrochemical reversibility, which could be mediated by changing the system formulations. The nanohybrid modified electrode sensors had a good peak current linear dependence on the analyte concentration with a wide detection range and a limit of detection as low as about 1.35 × 10−9 mol L−1, and the amount of aspartame was measured to be 35.36 and 40.20 µM in Coke zero, and Sprite zero, respectively. Therefore, the developed nanohybrids can potentially be used to fabricate novel electrochemical sensors for applications in the detection of beverage and food safety.

Encapsulation of copper and zinc oxide nanoparticles inside small diameter carbon nanotubes

2015 ◽  
Vol 202 ◽  
pp. 189-197 ◽  
Author(s):  
Dennis Großmann ◽  
Axel Dreier ◽  
Christian W. Lehmann ◽  
Wolfgang Grünert
Keyword(s):  
Carbon Nanotubes ◽  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Small Diameter ◽  
Oxide Nanoparticles ◽  
Copper And Zinc
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