Influence of total gas flow on carbon nanotube forests synthesised by water-assisted chemical vapour deposition

Liang, Youxuan; Jiang, Chuanhai; Zhao, Bin; Yang, Jing

doi:10.1049/mnl.2013.0526

Cited by 2 publications

(2 citation statements)

References 24 publications

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“… 7 modified the CNT growth and introduced a small amount of water into the CVD chamber together with the carbon source. Lot of studies have been published so far related successful CNT growth 8 , however, the properties of both the support and the catalytic layer considerably affect the properties of CNT forests, i. e. density, orientation, length, thickness and graphitization of the product, and therefore further investigations are necessaryin this field.…”

Section: Introductionmentioning

confidence: 99%

Influence of synthesis parameters on CCVD growth of vertically aligned carbon nanotubes over aluminum substrate

Szabó

Kecsenovity

Pápa

et al. 2017

Sci Rep

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In the past two decades, important results have been achieved in the field of carbon nanotube (CNT) research, which revealed that carbon nanotubes have extremely good electrical and mechanical properties The range of applications widens more, if CNTs form a forest-like, vertically aligned structure (VACNT) Although, VACNT-conductive substrate structure could be very advantageous for various applications, to produce proper system without barrier films i.e. with good electrical contact is still a challenge. The aim of the current work is to develop a cheap and easy method for growing carbon nanotubes forests on conductive substrate with the CCVD (Catalytic Chemical Vapor Deposition) technique at 640 °C. The applied catalyst contained Fe and Co and was deposited via dip coating onto an aluminum substrate. In order to control the height of CNT forest several parameters were varied during the both catalyst layer fabrication (e.g. ink concentration, ink composition, dipping speed) and the CCVD synthesis (e.g. gas feeds, reaction time). As-prepared CNT forests were investigated with various methods such as scanning electron microscopy, Raman spectroscopy, and cyclic voltammetry. With such an easy process it was possible to tune both the height and the quality of carbon nanotube forests.

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Section: Introductionmentioning

confidence: 99%

Influence of synthesis parameters on CCVD growth of vertically aligned carbon nanotubes over aluminum substrate

Szabó

Kecsenovity

Pápa

et al. 2017

Sci Rep

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“…In the past few decades, carbon nanotubes (CNTs) have received intense research interests because of their desirable mechanical, optical, electrical and thermal properties [1]. In general, methane [2][3][4], ethylene [5][6][7][8], acetylene [4,[9][10][11] and other hydrocarbons have been used as carbon sources for CNT synthesis. Apart from these hydrocarbons, the use of waste polymers feedstock is more environmental and economical feedstock for CNT synthesis, hence transforming waste polymers into high value-added CNTs is desirable.…”

Section: Introductionmentioning

confidence: 99%

Preparation of multi‐walled carbon nanotubes and its application as flame retardant for polypropylene

Shen

Gong

et al. 2015

Micro & Nano Letters

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NiO catalyst supported on Fe-pillared montmorillonite (5-15 wt% Ni) was prepared via a simple conventional impregnation method. The physicochemical properties of the Ni catalyst were characterised by X-ray diffraction, inductively coupled plasma-atomic emission spectrometry and transmission electron microscopy. The Ni catalyst, together with organic montmorillonite (OMMT), was employed to prepare multi-walled carbon nanotubes (MWCNTs) by using polypropylene (PP) as a precursor. An increase in Ni loading of the catalyst led to a significant increase in the yield of MWCNTs at the expense of a slight decline in quality of the obtained MWCNTs. Moreover, OMMT altered the degradation process of PP, which resulted in a much higher fraction of light hydrocarbons in degradation products. As such, a substantial increase in the yield of MWCNTs was attained. In addition, the obtained MWCNTs were used as flame retardant for PP, and significantly enhanced thermal stability and flame retardancy according to thermogravimetry analysis and cone data, respectively. PP/MWCNTs nanocomposite exhibited higher degradation temperature, longer ignition time, much lower heat release rate and smoke production rate. This work offers an efficient Ni catalyst to convert PP into MWCNTs which could be applied as flame retardant for polymers.

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Influence of total gas flow on carbon nanotube forests synthesised by water-assisted chemical vapour deposition

Cited by 2 publications

References 24 publications

Influence of synthesis parameters on CCVD growth of vertically aligned carbon nanotubes over aluminum substrate

Influence of synthesis parameters on CCVD growth of vertically aligned carbon nanotubes over aluminum substrate

Preparation of multi‐walled carbon nanotubes and its application as flame retardant for polypropylene

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