Effect of reactor temperature on direct growth of carbon nanomaterials on stainless steel

Metals are increasingly used in engineering due to their high specific strength. However, some of pure metals do not posses good corrosion resistance. Therefore carbon nanomaterials (CNMs) has been studied to overwhelm the corrosion existed on the metal’s surface. CNMs are synthesized directly on various metal substrates by Chemical Vapor Deposition (CVD) technique without addition of any external catalyst, in reactor at temperature of 800°C. Argon with a flow rate of 200ml/min was used as a carrier gas and acetone as a carbon source. In this study, two different metals were used as metal substrate: mild steel and stainless steel 316. The morphology, existence of CNTs and elemental analysis of the CNMs on metal substrate are evaluated using Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD) and Energy Dispersive X-ray (EDX), respectively. It was proven that the different element composition of metal substrate influenced the size and morphology of CNMs. The most suitable metal to grow CNTs was found to be stainless steel.

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N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon Nanotubes

Nanomaterials ◽

10.3390/nano11081882 ◽

2021 ◽

Vol 11 (8) ◽

pp. 1882

Author(s):

Jin Ah Lee ◽

Won Jun Lee ◽

Joonwon Lim ◽

Sang Ouk Kim

Keyword(s):

Carbon Nanotubes ◽

Metal Oxide ◽

Carbon Nanomaterials ◽

Wide Spectrum ◽

Metal Oxide Nanoparticles ◽

Nucleation And Growth ◽

Oxide Nanoparticles ◽

Metal Oxide Nanoparticle ◽

Nucleation Sites ◽

Direct Growth

Metal oxide nanoparticles supported on heteroatom-doped graphitic surfaces have been pursued for several decades for a wide spectrum of applications. Despite extensive research on functional metal oxide nanoparticle/doped carbon nanomaterial hybrids, the role of the heteroatom dopant in the hybridization process of doped carbon nanomaterials has been overlooked. Here, the direct growth of MnOx and RuOx nanoparticles in nitrogen (N)-doped sites of carbon nanotubes (NCNTs) is presented. The quaternary nitrogen (NQ) sites of CNTs actively participate in the nucleation and growth of the metal nanoparticles. The evenly distributed NQ nucleation sites mediate the generation of uniformly dispersed <10 nm diameter MnOx and RuOx nanoparticles, directly decorated on NCNT surfaces. The electrochemical performance of the resultant hybridized materials was evaluated using cyclic voltammetry. This novel hybridization method using the dopant-mediated nucleation and growth of metal oxides suggests ways that heteroatom dopants can be utilized to optimize the structure, interface and corresponding properties of graphitic carbon-based hybrid materials.

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Direct growth of vertically aligned carbon nanotubes on stainless steel by plasma enhanced chemical vapor deposition

Diamond and Related Materials ◽

10.1016/j.diamond.2018.10.012 ◽

2018 ◽

Vol 90 ◽

pp. 144-153 ◽

Cited By ~ 6

Author(s):

Arun Thapa ◽

Suman Neupane ◽

Rui Guo ◽

Katherine L. Jungjohann ◽

Doug Pete ◽

...

Keyword(s):

Carbon Nanotubes ◽

Stainless Steel ◽

Chemical Vapor Deposition ◽

Vapor Deposition ◽

Chemical Vapor ◽

Vertically Aligned Carbon Nanotubes ◽

Aligned Carbon Nanotubes ◽

Direct Growth ◽

Vertically Aligned

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Direct Growth of Aligned Multiwalled Carbon Nanotubes on Treated Stainless Steel Substrates

Langmuir ◽

10.1021/la7012232 ◽

2007 ◽

Vol 23 (17) ◽

pp. 9046-9049 ◽

Cited By ~ 89

Author(s):

Charan Masarapu ◽

Bingqing Wei

Keyword(s):

Carbon Nanotubes ◽

Stainless Steel ◽

Multiwalled Carbon Nanotubes ◽

Multiwalled Carbon ◽

Direct Growth ◽

Steel Substrates

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Direct growth of MWCNTs on modified stainless steel surface for flexible lithium ion batteries

Materials Today Proceedings ◽

10.1016/j.matpr.2019.06.148 ◽

2019 ◽

Vol 17 ◽

pp. 1309-1318 ◽

Cited By ~ 1

Author(s):

U. Pakdee ◽

B. Duangsawat

Keyword(s):

Stainless Steel ◽

Lithium Ion Batteries ◽

Steel Surface ◽

Lithium Ion ◽

Stainless Steel Surface ◽

Direct Growth

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Direct Growth of Hexagonal Boron Nitride Nanofilms on Stainless Steel for Corrosion Protection

ACS Applied Nano Materials ◽

10.1021/acsanm.1c02590 ◽

2021 ◽

Author(s):

Xuemei Tang ◽

Hongyan Wang ◽

Caiyun Liu ◽

Xingrui Zhu ◽

Wei Gao ◽

...

Keyword(s):

Stainless Steel ◽

Boron Nitride ◽

Corrosion Protection ◽

Hexagonal Boron Nitride ◽

Direct Growth

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Synthesis and Characterisation of Carbon Nanomaterials (CNMs) Using Polypropylene(PP) Waste as Carbon Precursor: Effect of Reactor Temperature

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.280.385 ◽

2018 ◽

Vol 280 ◽

pp. 385-392

Author(s):

X.H. Sim ◽

A.H. Norzilah ◽

A.N. Edzatty

Keyword(s):

Carbon Nanomaterials ◽

Chemical Vapour ◽

Small Diameter ◽

Diffraction Peak ◽

Diameter Distribution ◽

Metal Catalyst ◽

Carbon Precursor ◽

Polymer Waste ◽

Reactor Temperature ◽

Xrd Patterns

Fully utilisation of urban wastes such as polymer waste is considered as promising step to save the environment besides contributing to the production of Carbon Nanomaterials (CNMs) and their insight in mechanism involved. In this work, CNMs were successfully synthesised using polypropylene (PP) waste as carbon precursor via Chemical Vapour Deposition (CVD). Ferrocene was used as metal catalyst whereas argon was used as purging gas. The CVD were operated at various reactor temperatures to assess the possibility of CNMs growth at 600°C, 700°C, 800°C, 900°C, and 1000°C. The reaction time and argon flow rate were fixed at 90 minutes and 85 ml/min, respectively. The production of CNMs started at reactor temperature of 700°C and increased steadily from 0.0178 g to 0.2950 g with elevated temperature up to 1000°C. The diameter distribution of synthesised-CNMs reduced with the increased of reactor temperature. The XRD patterns revealed a sharp diffraction peak at around 26o(002) and broad diffraction peak at around 44o(111) which was proven to be Carbon Nanotubes (CNTs). Reactor temperature of 800°C considered as the best temperature to synthesis small diameter of CNMs in high quantity.

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Direct growth of carbon nanotubes on Ar ion bombarded AISI 304 stainless steel substrates

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2009.02.047 ◽

2009 ◽

Vol 203 (17-18) ◽

pp. 2510-2513 ◽

Cited By ~ 9

Author(s):

N. Sabeti Nejad ◽

M.M. Larijani ◽

M. Ghoranneviss ◽

P. Balashabadi ◽

A. Shokouhy

Keyword(s):

Carbon Nanotubes ◽

Stainless Steel ◽

304 Stainless Steel ◽

Aisi 304 Stainless Steel ◽

Aisi 304 ◽

Direct Growth ◽

Steel Substrates

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Single-Step Direct Hydrothermal Growth of NiMoO4 Nanostructured Thin Film on Stainless Steel for Supercapacitor Electrodes

Nanomaterials ◽

10.3390/nano8080563 ◽

2018 ◽

Vol 8 (8) ◽

pp. 563 ◽

Cited By ~ 4

Author(s):

V. Kannan ◽

Hyun-Jung Kim ◽

Hyun-Chang Park ◽

Hyun-Seok Kim

Keyword(s):

Stainless Steel ◽

High Current Density ◽

Steel Substrate ◽

Single Step ◽

Hydrothermal Growth ◽

Electrochemical Characteristics ◽

Growth Duration ◽

Nanostructured Thin Film ◽

Oxide Electrodes ◽

Direct Growth

We report a facile and direct growth of NiMoO4 nanostructures on a nonreactive stainless steel substrate using a single-step hydrothermal method and investigated hydrothermal growth duration effects on morphology and electrochemical characteristics. The highest specific capacitances of 341, 619, and 281 F/g were observed for NiMoO4 with 9, 18, and 27 h growth, respectively, at 1 A/g. Thus, grown samples preserved almost 59% of maximum specific capacitance at a high current density of 10 A/g. All samples exhibited a respectable cycling stability over 3000 charge-discharge operations. NiMoO4 grown for 18 h exhibited 7200 W/kg peak power density at 14 Wh/kg energy density. Thus, the proposed single-step hydrothermal growth is a promising route to obtain NiMoO4 nanostructures and other metal oxide electrodes for supercapacitor applications.

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