The effect of different order of purification treatments on the purity of multiwalled carbon nanotubes

Ling, Xinlong; Wei, Yizhe; Zou, Liming; Xu, Su

doi:10.1016/j.apsusc.2013.03.056

Cited by 77 publications

(43 citation statements)

References 33 publications

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“…4. According to the reported literature [6,19,25] [25]. Additionally, the peaks of sulfonic acid groups in the XPS spectrum of s-MWCNTs can be found.…”

Section: Xpsmentioning

confidence: 94%

“…The D band is due to the A 1g breathing vibrations of sp 3 carbon atoms of defects and disorder while G band corresponds to E 2g mode vibrations of sp 2 carbon atoms in graphene layer. The intensity ratio of the D and G bands (I D /I G ) is a good indicator to evaluate the integrity of carbon nanotubes [24,25]. With I D /I G ratio increasing, the quality of carbon nanotubes is decreased.…”

Section: Ramanmentioning

confidence: 99%

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A facile approach toward preparation of sulfonated multi-walled carbon nanotubes and their dispersibility in various solvents

Wei

Ling

Zou

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…4. According to the reported literature [6,19,25] [25]. Additionally, the peaks of sulfonic acid groups in the XPS spectrum of s-MWCNTs can be found.…”

Section: Xpsmentioning

confidence: 94%

Section: Ramanmentioning

confidence: 99%

A facile approach toward preparation of sulfonated multi-walled carbon nanotubes and their dispersibility in various solvents

Wei

Ling

Zou

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…It can be seen that a weak absorption peak appears at 3450 cm -1 , which is attributed to the presence of -OH coming from ambient atmospheric moisture. However, there is no obvious absorption peak appears in the curve of raw-MWCNTs, which may indicates that the raw-MWCNTs possess a complete surface structure [28].…”

Section: Structural Characterization Of Mwcntsmentioning

confidence: 99%

Preparation and properties of an antistatic UV-curable coating modified by multi-walled carbon nanotubes

Cui

Xue³

et al. 2016

Polym. Bull.

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Ultraviolet (UV)-curable coating with strong electric insulation which applied on the surface of plastic panel will produce static security risks. As a kind of antistatic agent, multi-walled carbon nanotubes (MWCNTs) possess remarkable electrical, thermal, and mechanical properties, which are widely applied on varieties of materials. In this work, a kind of MWCNTs modified antistatic UV-curable coating for the surface of polyvinyl chloride (PVC) substrates was obtained. MWCNTs were oxidized by acid mixture firstly, then silanized using a coupling agent, 3-(methacryloxy)propyltrimethoxysilane (3-MAPTES). The results showed that when MWCNTs content was 2.0 wt% and the ball milling time was 1.5 h, the surface resistivity of the UV-curable coating was 4.1 9 10 7 X, which may meet the requirement of antistatic applications. Meanwhile, there was only a slight variation on the adhesion and glossiness of the coating. The FESEM micrograph of the antistatic UV-curable coating showed that MWCNTs were dispersed uniformly in the prepared UV-curable coatings and most of them inside the coating existed in a stacking way. MWCNTs may form a conductive network and make the electrostatic charge diffused not only through the surface of UV-curable coating, but also through the inside of the coating.

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“…MWCNTs have been purified before we used [8]. 10 g concentrated H2SO4 (98%) were diluted to 0.5 mol/L and added to a 1000 ml round-bottom flask, then 100 mg MWCNTs and 300 mg KMnO4 followed.…”

Section: Methodsmentioning

confidence: 99%

Orthogonal experiment analysis of Carbon nanotubes oxidation process

Lu¹,

Zou

Wei³

et al. 2016

Proceedings of the 2016 5th International Conference on Environment, Materials, Chemistry and Power Electronics

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Abstract. The application of carbon nanotubes (CNTs) in biomaterials field was limited by its poor dispersion in water solution. In this paper, a specific methodology based on potassium permanganate (KMnO 4 )/concentrated sulfuric acid (H 2 SO 4 ) hydrothermal oxidation was used to modify the surface of multi-walled carbon nanotubes (MWCNTs). The orthogonal experiment results indicated that MWCNTs/ KMnO 4 / concentrated H 2 SO 4 at 1:3:100 (g/g/g), stirring under 150℃ for 7h was the optimal oxidation process. FT-IR and TGA results demonstrated that carboxyl groups were introduced to the surface of MWCNTs. Raman spectra and SEM, TEM showed that structure of MWCNTs were damaged after been oxidized.

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The effect of different order of purification treatments on the purity of multiwalled carbon nanotubes

Cited by 77 publications

References 33 publications

A facile approach toward preparation of sulfonated multi-walled carbon nanotubes and their dispersibility in various solvents

A facile approach toward preparation of sulfonated multi-walled carbon nanotubes and their dispersibility in various solvents

Preparation and properties of an antistatic UV-curable coating modified by multi-walled carbon nanotubes

Orthogonal experiment analysis of Carbon nanotubes oxidation process

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