Effect of the Silanization Processes on the Properties οf Oxidized Multiwalled Carbon Nanotubes

• Authors: B. Scheibe , E. Borowiak-Palen , R. Kalenczuk
• Languages of publication: EN

Abstracts

EN

This paper presents the results of the research on the effect of the two different silanization methods on the thermal and structural properties of oxidized multiwalled carbon nanotubes. As-purified material was oxidized in the mixture of nitric and sulfuric acids. An oxidized material was divided into two parts which underwent two silanization treatments by 3-aminopropyltriethoxysilane (APTES). The first experiment (I) was performed at room temperature in acetone (pH 7) for 30 min. The second experiment (II) involved a hydrolysis of APTES at 40°C in water (pH 4) for 3 h. The functionalization extent of the samples at each step of the preparation was investigated by the Raman spectroscopy. The presence of the functional groups on the nanotubes surface have been studied via the Fourier transform infrared spectroscopy (FT-IR). The quantity of the external moieties introduced on multiwalled carbon nanotubes surface after oxidation process was estimated by the Boehms titration method. The high resolution transmission electron microscopy analysis allowed us to observe the changes of the morphology of the investigated carbon nanotubes. The influence of the silanization processes on the thermal stability of multiwalled carbon nanotubes was thoroughly studied by thermogravimetry analysis. There was observed a significant increase of the thermal stability of the multiwalled carbon nanotubes samples upon silanization treatment in respect of pristine and oxidized multiwalled carbon nanotubes.

Keywords

EN

81.65.Mq; 81.07.De; 61.48.De; 65.80.-g; 68.37.Lp

Discipline

• 68.37.Lp: Transmission electron microscopy (TEM)
• 61.48.De: Structure of carbon nanotubes, boron nanotubes, and other related systems(for structure of hollow nanowires, see 61.46.Np)
• 81.07.De: Nanotubes
• 65.80.-g: Thermal properties of small particles, nanocrystals, nanotubes, and other related systems
• 81.65.Mq: Oxidation(see also 64.75.Lm Phase separation and segregation in oxidation)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 116
• Issue: S
• Pages: S-150-S-155

Dates

published

2009-12

Contributors

author

B. Scheibe

• Centre of Knowledge Based Nanomaterials and Technologies, Institute of Chemical and Enviroment Engineering, West Pomeranian University of Technology, ul. Pułaskiego 10, 70-322 Szczecin, Poland

author

E. Borowiak-Palen

• Centre of Knowledge Based Nanomaterials and Technologies, Institute of Chemical and Enviroment Engineering, West Pomeranian University of Technology, ul. Pułaskiego 10, 70-322 Szczecin, Poland

author

R. Kalenczuk

• Centre of Knowledge Based Nanomaterials and Technologies, Institute of Chemical and Enviroment Engineering, West Pomeranian University of Technology, ul. Pułaskiego 10, 70-322 Szczecin, Poland

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Identifiers

DOI

10.12693/APhysPolA.116.S-150