One-pot large-area synthesis of graphitic filamentous nanocarbon-aligned carbon thin layer/carbon nanotube forest hybrid thin films and their corrosion behaviors in simulated seawater condition

Jeong, Namjo; Jwa, Eunjin; Kim, Chan-Soo; Choi, Ji Yeon; Nam, Joo-Youn; Hwang, Kyo Sik; Han, Ji-Hyung; Kim, Han−Ki; Park, Soon-Chul; Seo, Yong Seog; Jang, Moon Seok

doi:10.1016/j.cej.2016.12.044

Cited by 19 publications

(4 citation statements)

References 40 publications

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“…40 The I D /I G ratio of the filamentous nanocarbon was 1.07, indicating the presence of defects in their structures. 41 In the second-order Raman spectrum region, two peaks were found at approximately 2710 cm −1 (G′-band) and 2940 cm −1 (D + G-band). For the core of the GCECAN, the peaks corresponding to the carbonate group were almost not observed in the sample.…”

Section: Resultsmentioning

confidence: 93%

“…The G-band in multiwalled carbon nanotubes is generally found at approximately 1580 cm –1 , but the G-band of the GCECAN shifted to higher frequencies, implying the presence of a strained microstructure in the crystalline graphitic structure . The I D / I G ratio of the filamentous nanocarbon was 1.07, indicating the presence of defects in their structures . In the second-order Raman spectrum region, two peaks were found at approximately 2710 cm –1 ( G ′-band) and 2940 cm –1 (D + G-band).…”

Section: Resultsmentioning

confidence: 97%

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Direct Growth of Graphitic Carbon-Encapsulating Carbonate Apatite Nanowires from Calcium Carbonate

Jeong¹,

Park²,

Jang³

et al. 2018

Crystal Growth & Design

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We report the direct chemical vapor deposition of graphitic carbon-encapsulating carbonate apatite nanowires (GCECANs)/hexagonal portlandite-phased Ca(OH)2 hybrid structures from CaCO3 powder at 900 °C. The formation mechanism of the GCECANs is investigated in detail through a structural and morphological characterization of the final products. Spectroscopic analyses elucidate the effect of H2 concentration in the reactor on the transformation of the calcite-phased CaCO3 into vaterite-phased CaCO3 and subsequently portlandite-phased Ca(OH)2. The results show that GCECANs are formed on the surface of the derived Ca(OH)2. It is especially remarkable that a higher H2 concentration results in the precipitated growth of such hybrid structures. Microscopic images show that GCECANs 20 nm in diameter grew up to 3 μm in length along the direction corresponding to the [001] plane of the hexagonal apatite crystal. In addition, the electrical properties of the GCECANs are measured by using an electrode with 150 nm gap.

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Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 97%

Direct Growth of Graphitic Carbon-Encapsulating Carbonate Apatite Nanowires from Calcium Carbonate

Jeong¹,

Park²,

Jang³

et al. 2018

Crystal Growth & Design

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“…Incidentally, homogeneous nanoparticle dispersion and matrix-nanofiller interactions have been found to facilitate the electron conductivity and corrosion-resistant properties of polymers [8,9]. Moreover, nanofiller nanoparticles in anticorrosion coatings may form tortuous pathways to delay the diffusion of corrosive species towards metals [10]. Particularly, anticorrosion coatings based on the polymer/nanocarbon nanocomposites have been found to be effective in preventing the corrosive species from reaching the metal surface [11].…”

Section: Introductionmentioning

confidence: 99%

Corrosion-Resisting Nanocarbon Nanocomposites for Aerospace Application: An Up-to-Date Account

2023

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The design and necessity of corrosion-resisting nanocarbon nanocomposites have been investigated for cutting-edge aerospace applications. In this regard, nanocarbon nanofillers, especially carbon nanotubes, graphene, nanodiamond, etc. have been used to fill in various polymeric matrices (thermosets, thermoplastics, and conducting polymers) to develop anti-rusting space-related nanocomposites. This review fundamentally emphases the design, anti-corrosion properties, and application of polymer/nanocarbon nanocomposites for the space sector. An electron-conducting network is created in the polymers with nanocarbon dispersion to assist in charge transportation, and thus in the polymers’ corrosion resistance features. The corrosion resistance mechanism depends upon the formation of tortuous diffusion pathways due to nanofiller arrangement in the matrices. Moreover, matrix–nanofiller interactions and interface formation play an important role in enhancing the corrosion protection properties. The anticorrosion nanocomposites were tested for their adhesion, contact angle, and impedance properties, and NaCl tests and scratch tests were carried out. Among the polymers, epoxy was found to be superior corrosion-resisting polymer, relative to the thermoplastic polymers in these nanocomposites. Among the carbon nanotubes, graphene, and nanodiamond, the carbon nanotube with a loading of up to 7 wt.% in the epoxy matrix was desirable for corrosion resistance. On the other hand, graphene contents of up to 1 wt.% and nanodiamond contents of 0.2–0.4 wt.% were desirable to enhance the corrosion resistance of the epoxy matrix. The impedance, anticorrosion, and adhesion properties of epoxy nanocomposites were found to be better than those of the thermoplastic materials. Despite the success of nanocarbon nanocomposites in aerospace applications, thorough research efforts are still needed to design high-performance anti-rusting materials to completely replace the use of metal components in the aerospace industry.

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“…[6][7][8][9] Recently, many studies have reported carbon nanotubes (CNTs) can act as a good nanofiller to enhance the wear and corrosion resistance property of the coating due to their unique features such as excellent mechanical, thermal and electrical properties. [10][11][12][13] Dong et al 14 investigated the influence of CNTs concentration on microstructure, micro-indentation hardness as well as friction behavior and anti-wear characteristics of the Ni-GO-CNTs composite coatings and found the wear resistance of Ni-GO-CNTs composite coating increases initially and then decreases with increasing CNTs concentration. Alishahi et al 15 prepared Ni-P-CNT composite coating on the surface of copper through electroless plating method and obtained a coating with high corrosion resistance property, which is attributed to superior mechanical properties, unique topological structure and high chemical stability of CNTs.…”

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confidence: 99%

Investigation of Tribological and Corrosion Properties of Carbon Nanotube Reinforced Chemically Bonded Phosphate Ceramic Coatings

Liu¹,

Wang²,

Zhang³

et al. 2022

ECS J. Solid State Sci. Technol.

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Chemically bonded phosphate ceramic coatings (CBPCs) with the addition of carbon nanotubes (CNTs) were prepared on mild steel (Q235) through the sol gel method. The wear and corrosion performance of CBPCs with the addition of CNTs were evaluated by tribological and electrochemical tests combining the analysis of microstructure, phase characterization, and curing behavior. Results indicate CNTs nanofiller significantly enhances the wear and corrosion behavior of CBPCs. The enhancement of wear performance for CBPCs with CNTs nanofiller is produced by the CNTs effectively hindering dislocation movement through the coating and substrate system and the occurrence of plastic deformation owing to their remarkable mechanical and lubricating properties. The enhancement of corrosion performance for CBPCs with CNTs nanofiller is due to the CNTs helping CBPCs to develop a denser and more compact microstructure, which contributes to prolonging the electrolyte diffusion path. In addition, CNTs exhibit excellent hydrophobicity and can absorb oxygen molecules, which prevents the corrosion process on the anode and cathode sections of coating and substrate system.

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One-pot large-area synthesis of graphitic filamentous nanocarbon-aligned carbon thin layer/carbon nanotube forest hybrid thin films and their corrosion behaviors in simulated seawater condition

Cited by 19 publications

References 40 publications

Direct Growth of Graphitic Carbon-Encapsulating Carbonate Apatite Nanowires from Calcium Carbonate

Direct Growth of Graphitic Carbon-Encapsulating Carbonate Apatite Nanowires from Calcium Carbonate

Corrosion-Resisting Nanocarbon Nanocomposites for Aerospace Application: An Up-to-Date Account

Investigation of Tribological and Corrosion Properties of Carbon Nanotube Reinforced Chemically Bonded Phosphate Ceramic Coatings

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