Study of ZnO-CNT Nanocomposites in High-Pressure Conditions

Recently, carbon nanotubes (CNTs) have been used extensively to develop new materials and devices due to their specific morphology and properties. The reinforcement of different metal oxides such as zinc oxide (ZnO) with CNT develops advanced multifunctional materials with improved properties. Our a...

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Bibliographic Details
Published in:Materials 2021-09, Vol.14 (18), p.5330
Main Authors: Cursaru, Laura-Madalina, Valsan, Sorina Nicoleta, Puscasu, Maria-Eliza, Tudor, Ioan Albert, Zarnescu-Ivan, Nicoleta, Vasile, Bogdan Stefan, Piticescu, Roxana Mioara
Format: Article
Language:English
Subjects:
3-D printers
Additive manufacturing
Carbon
Carbon nanotubes
Composite materials
Composition
Decomposition
Differential scanning calorimetry
Efficiency
Electron microscopy
Energy storage
Extrusion
Fourier transforms
Functional groups
II-VI semiconductors
Infrared analysis
Infrared spectroscopy
Investigations
Metal oxides
Methods
Morphology
Multifunctional materials
Nanocomposites
Nanomaterials
Nanoparticles
Nitrates
Pastes
Photocatalysis
Photovoltaic cells
Pollutants
Solar energy
Thermogravimetric analysis
Thermogravimetry
Three dimensional printing
Water treatment
X-ray diffraction
Zinc oxide
Zinc oxides
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Summary:Recently, carbon nanotubes (CNTs) have been used extensively to develop new materials and devices due to their specific morphology and properties. The reinforcement of different metal oxides such as zinc oxide (ZnO) with CNT develops advanced multifunctional materials with improved properties. Our aim is to obtain ZnO-CNT nanocomposites by in situ hydrothermal method in high-pressure conditions. Various compositions were tested. The structure and morphology of ZnO-CNT nanocomposites were analyzed by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry—thermogravimetry (DSC-TG), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and transmission electron microscopy (TEM). These analyses showed the formation of complex ZnO-CNT structures. FT-IR spectra suggest possible interactions between CNT and ZnO. DSC-TG analysis also reveals the formation of some physical bonds between ZnO and CNT, through the appearance of endothermic peaks which could be assigned to the decomposition of functional groups of the CNT chain and breaking of the ZnO-CNT bonds. XRD characterization demonstrated the existence of ZnO nanocrystallites with size around 60 nm. The best ZnO:CNT composition was further selected for preliminary investigations of the potential of these nanocomposite powders to be processed as pastes for extrusion-based 3D printing.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma14185330