Synthesis of carbon films by electrochemical etching of SiC with hydrofluoric acid in nonaqueous solvents

Senthilnathan, Jaganathan; Weng, Chih-Chiang; Tsai, Wen Ta; Gogotsi, Yury; Yoshimura, Masahiro

doi:10.1016/j.carbon.2014.01.028

Cited by 18 publications

(19 citation statements)

References 54 publications

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“…9 shows the typical Raman spectra obtained from bare SiC and prepared core shell samples for 2 min of irradiation in the wavelength range of 400-3500 cm À1 and also the enlarged view for comparison of Raman spectra in the wavelength range of 1200-1800 cm À1 . It is clearly seen from the figure some intense peaks are between 600 and 1000 cm À1 , they resemble to second-order Raman bands originated in the SiC substrate [37]. ZrO 2 and LZO contributions are also observed, as expected on the bare SiC particles, they are acknowledged by the D band at 1510 cm À1 and the G band at 1713 cm À1 .…”

Section: Thermal Analysissupporting

confidence: 56%

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Effect of surface modification on silicon carbide particles with nanocrystalline spinel LZO for enhanced damping and mechanical property

Singh

Pal

2015

Materials & Design

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Section: Thermal Analysissupporting

confidence: 56%

“…10(b) for the same sample. In addition, the XRD pattern for the SiC@ZrO 2 (chemical precipitation) is showing amorphous ZrO 2 coating layer [37], in Fig. 10(a).…”

Section: Thermal Analysismentioning

confidence: 99%

Effect of surface modification on silicon carbide particles with nanocrystalline spinel LZO for enhanced damping and mechanical property

Singh

Pal

2015

Materials & Design

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“…is practically explored in our work for the first time. Indeed, formation of "carbon-enriched layers" on the HF-etched SiC surface was observed before 11,35 and closely studied recently 36,37 , however, exact composition of a colored soluble etching products was, on our knowledge, not characterized up to now.…”

Section: Discussionmentioning

confidence: 86%

Electrochemical Synthesis of Carbon Fluorooxide Nanoparticles from 3C-SiC Substrates

et al. 2015

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Chemical nature of products, formed during electrochemical dissolution of polycrystalline 3C-SiC substrate in HF:ethanol mixture, was studied by means of FTIR spectroscopy, temperature-programmed desorption mass-spectrometry (TPD-MS), nanoparticles (NPs) with sizes of 1 -10 nm is described. CFO NPs easily dissolves in polar organic solvents (ethanol, CH 2 Cl 2 , etc); their solutions demonstrate intense yellowish-green photoluminescence under UV excitation. A model of the CFO chemical structure based on relatively small graphene domains interconnected with partially fluorinated hydrocarbon groups and terminated by carboxylic acid (-CO 2 H), ethyl ester (-CO 2 C 2 H 5 ), perfluorinated functional groups and polycarboxylated alkyl chains is proposed. Presence of carboxylates allows easy functionalization of the CFO NPs via amide chemistry. In particular, grafting of octadecyl groups makes CFO NPs soluble in hydrocarbons.

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“…from binary or ternary carbides using chlorine gas (Cl 2 ). Notably, synthesis of CDCs at room temperature, except for recently reported nanometer-thin films on SiC [19] has remained elusive. [10] While this process is effective, it requires the use of Cl 2 gas that leaves traces of metal chlorides that may affect biocompatibility or cause corrosion, and can only be done at temperatures of 200 8C or higher.…”

mentioning

confidence: 99%

Room‐Temperature Carbide‐Derived Carbon Synthesis by Electrochemical Etching of MAX Phases

Lukatskaya¹,

Halim²,

Dyatkin³

et al. 2014

Angew Chem Int Ed

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154

102

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Porous carbons are widely used in energy storage and gas separation applications, but their synthesis always involves high temperatures. Herein we electrochemically selectively extract, at ambient temperature, the metal atoms from the ternary layered carbides, Ti3 AlC2 , Ti2 AlC and Ti3 SiC2 (MAX phases). The result is a predominantly amorphous carbide-derived carbon, with a narrow distribution of micropores. The latter is produced by placing the carbides in HF, HCl or NaCl solutions and applying anodic potentials. The pores that form when Ti3 AlC2 is etched in dilute HF are around 0.5 nm in diameter. This approach forgoes energy-intensive thermal treatments and presents a novel method for developing carbons with finely tuned pores for a variety of applications, such as supercapacitor, battery electrodes or CO2 capture.

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Synthesis of carbon films by electrochemical etching of SiC with hydrofluoric acid in nonaqueous solvents

Cited by 18 publications

References 54 publications

Effect of surface modification on silicon carbide particles with nanocrystalline spinel LZO for enhanced damping and mechanical property

Effect of surface modification on silicon carbide particles with nanocrystalline spinel LZO for enhanced damping and mechanical property

Electrochemical Synthesis of Carbon Fluorooxide Nanoparticles from 3C-SiC Substrates

Room‐Temperature Carbide‐Derived Carbon Synthesis by Electrochemical Etching of MAX Phases

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