Nanocarbons from rice husk by microwave plasma irradiation: From graphene and carbon nanotubes to graphenated carbon nanotube hybrids

Wang, Zhipeng; Ogata, Hironori; Morimoto, Shingo; Ortiz‐Medina, Josué; Fujishige, Masatsugu; Takeuchi, Kenji; Muramatsu, Hiroyuki; Hayashi, T.; Terrones, Mauricio; Hashimoto, Yuichi; Endo, Morinobu

doi:10.1016/j.carbon.2015.07.037

Cited by 93 publications

(41 citation statements)

References 37 publications

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“…Based on the analyses of rice husk (RH)-derived nanocarbons by the MPI technique, nanotubes and graphene structures strongly depend on the experimental parameters, such as the temperature and pressure. 25 Thus, these resulting structures obtained here are helpful in understanding the GSF growth under the irradiation of coffee grounds by microwave plasma.…”

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confidence: 71%

Microwave plasma-induced graphene-sheet fibers from waste coffee grounds

et al. 2015

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confidence: 71%

Microwave plasma-induced graphene-sheet fibers from waste coffee grounds

et al. 2015

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“…Graphene is considered as a two-dimensional structure, whereas carbon nanotubes (CNTs) are known for onedimensional materials. Meanwhile, a new hybrid of both having a three-dimensional structure is known as graphenated-CNTs (G-CNTs) [1][2][3][4][5]. The high surface area of the threedimensional structure of the G-CNT structure provides an advantage for gas-sensing application due to the high edge density of graphene exfoliated on the outer wall of CNTs.…”

Section: Introductionmentioning

confidence: 99%

Novel 3-Dimensional Cotton-Like Graphenated-Carbon Nanotubes Synthesized via Floating Catalyst Chemical Vapour Deposition Method for Potential Gas-Sensing Applications

Ismail

Mamat

Adnan

et al. 2019

Journal of Nanomaterials

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We reported the synthesis of graphenated-carbon nanotubes (G-CNTs) using a floating catalyst chemical vapour deposition (FCCVD) method and formed a bulk-cotton-like structure. The objectives of this work were to study the effect of the injection rate parameter of the carbon source on the formation of G-CNTs and CNTs and later to test them as an ammonia gas sensor. Ethanol, thiophene, and ferrocene were mixed and injected into FCCVD at 1150°C. The as-synthesized samples were then characterized using FESEM, HRTEM, TGA, Raman spectroscopy, XPS, and electrical conductivity measurement. We found that the injection rate of 5 ml/h was suitable for the formation of G-CNTs and a higher injection rate resulted in the formation of CNTs. Our measurement showed that the electrical conductivity response of G-CNTs was higher compared to that of CNTs. The gas-sensing performance of the gas sensor made of G-CNT materials also showed good response compared to that of CNTs. This experimental work paved the way for how we can selectively synthesize CNTs and G-CNTs via the FCCVD method, and G-CNTs have proven to be a better material for gas sensors.

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“…On the basis of our experimental result combined with previous works a possible growth mechanism in conversion of RHs into carbon nanomaterials has been proposed [20].…”

Section: Introductionmentioning

confidence: 56%

“…This is because, within 5-30 minutes, production of amorphous carbon is more likely to occur. It has also been reported that under plasma radiation amorphous carbon forms if the process exceeds 40 minutes [20]. The tube pressure was controlled by a rotary pump and a leak valve.…”

Section: Synthesis Of Carbon Nanomaterialsmentioning

confidence: 99%

Synthesis of Carbon Nanomaterials from Rice Husk via Microwave Oven

Asnawi

Azhari

Hamidon

et al. 2018

Journal of Nanomaterials

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Microwave oven was utilized to fabricate carbon nanostructure, specifically CNTs, from waste RH powders. It has been shown that the use of carbon source, catalyst, and commercial microwave oven to induce plasma is necessary to carry on this synthesis. The plasma enhances and speeds up the catalytic decomposition of RH in presence of ferrocene. FESEM, TGA, and Raman spectroscopy were utilized to confirm the presence and quality of produced carbon nanomaterials. In addition, these results suggest the conversion of ferrocene to iron(II, III) oxide with notable conversion rate.

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Nanocarbons from rice husk by microwave plasma irradiation: From graphene and carbon nanotubes to graphenated carbon nanotube hybrids

Cited by 93 publications

References 37 publications

Microwave plasma-induced graphene-sheet fibers from waste coffee grounds

Microwave plasma-induced graphene-sheet fibers from waste coffee grounds

Novel 3-Dimensional Cotton-Like Graphenated-Carbon Nanotubes Synthesized via Floating Catalyst Chemical Vapour Deposition Method for Potential Gas-Sensing Applications

Synthesis of Carbon Nanomaterials from Rice Husk via Microwave Oven

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