In Situ synthesis of SiC-graphene core-shell nanoparticles using wet ball milling

Zhang, Jiangshan; Yang, Shufeng; Chen, Zhuo; Yan, Yuanliang; Zhao, Jingwei; Li, Jingshe; Jiang, Zhengyi

doi:10.1016/j.ceramint.2018.02.012

Cited by 32 publications

(9 citation statements)

References 23 publications

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“…The previous other works also have demonstrated that the D peak intensity is associated to the disorder degree or presence of defects in graphene. 24 As shown in Raman spectrum of GO, the intensity of the D band is significantly lower than that of the G band. However, the enhanced D peak intensity after the reduction process of GO is observed, while keeping the unchanging peak location.…”

Section: Resultsmentioning

confidence: 93%

Preparation and tribological properties of eco‐friendly as‐exfoliated graphene in grease

Kong¹,

Liu²,

Cheng

2020

Lubrication Science

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The exfoliation for few layers of graphene was prospective for scale output due to low cost and processable advantages. However, the massive production had some obstacles such as high pollution with organics and harmful elements and use of rare metal. Herein, we developed a facile and eco-friendly expansionreduction exfoliation method to prepare graphene from graphene oxide (GO) with aid of oxalic acid(H 2 C 2 O 4). The as-exfoliated graphene nanosheets possessed a 10-layered thickness and large lateral size of approximately 0.5 μm. As a prospective application, the as-exfoliated graphene nanosheets were conducted as additive in the grease for the sake of antifriction and antiwear. The results showed that the friction reduction and wear resistant properties were improved by 35.8% and 32.8%, respectively. The friction reducing mechanism of graphene in grease was proposed due to forming a protective film.

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Section: Resultsmentioning

confidence: 93%

Preparation and tribological properties of eco‐friendly as‐exfoliated graphene in grease

Kong¹,

Liu²,

Cheng

2020

Lubrication Science

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“…It can be seen from this figure that the graphene layer is uniformly dispersed around the SiC nanoparticles, so the composite material has great dispersibility at different rotational speeds. This is mainly due to the fact that the dispersibility of SiC nanoparticles in 70% alcohol and 30% distilled water solution is superior to that of other mixed solutions [ 19 ]. Therefore, GNSs and SiC nanoparticles fully contact under the depolymerization effect of wet ball milling, which promotes the formation of graphene-wrapped SiC core-shell structure.…”

Section: Resultsmentioning

confidence: 99%

“…Gorrasi et al widely used ball milling to prepare composites materials with nanofillers in polymetric matrices [ 18 ]. Zhang et al developed a one-step synthesis method of graphene-wrapped nanocomposites by adding liquid as a process control agent for ball milling [ 19 ]. Compared with other methods, this method is simple, does not involve dangerous reagents, and does not need high temperature and high pressure and other extreme conditions.…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Rotational Speeds on Graphene-Wrapped SiC Core-Shell Nanoparticles in Wet Milling Medium

Dong

Yan²,

Huang

et al. 2021

Materials

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The effects of the wet milling rotating speed on the number of graphene layers and graphene quality, and the conversion efficiency of graphite exfoliate to graphene, were investigated by scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). The results show that the number of few-layer graphene nanometer sheets (GNSs) (≤10 layers) gradually increases with the increase of rotational speed in the range of 160–240 rpm. The proportion of GNSs with 0–10 layers reaches more than 80% as the rotational speed is increased to 280 rpm. GNS defect types in the composite materials are marginal defects with minimal influence and almost no oxidation. In the range of 160–280 rpm, the intensity of graphite peak decreases and the conversion efficiency of graphene increases with the increase of rotational speed. This is the same as the experimental result obtained by HRTEM.

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“…For synthesis strategy, a couple of physical and chemical approaches have been developed to prepare SiC@G core‐shell nanoparticles, such as ball milling, thermal treatment, laser irradiation, and chemical vapor deposition (CVD) 12‐14 . A wet ball milling method was proposed to prepare SiC@G core‐shell nanoparticles by wrapping SiC nanoparticles with graphene fewer than 6 layers 15 . This physical method had some disadvantages, such as high defect density in the products, poor and unstable contact interfaces.…”

Section: Introductionmentioning

confidence: 99%

“…[12][13][14] A wet ball milling method was proposed to prepare SiC@G core-shell nanoparticles by wrapping SiC nanoparticles with graphene fewer than 6 layers. 15 This physical method had some disadvantages, such as high defect density in the products, poor and unstable contact interfaces. Such disadvantages strongly affected the performance of SiC@G core-shell nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Controllable synthesis of SiC@Graphene core‐shell nanoparticles via fluidized bed chemical vapor deposition

et al. 2020

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SiC@Graphene (SiC@G) core‐shell nanoparticles were successfully prepared by a facile fluidized bed (FB) chemical vapor deposition (CVD) method. SiC@G core‐shell nanoparticles with an average size of 10 nm and graphene from 1 to 5 layers with a controllable thickness were obtained by finely adjusting the experimental temperatures. The formation of SiC nanoparticles and graphene layers was confirmed by the results of X‐ray diffraction (XRD) and Raman Spectroscopy. The graphene content in SiC@G core‐shell nanoparticles prepared at different temperatures was measured from thermogravimetric analysis (TG), which varied from 5.89% to 11.88 mass%. From X‐ray photoelectron spectroscopy (XPS) results, no absorption assigned to Si‐O band was detected, indicating the effective protection of the SiC nanoparticles against oxidation by the graphene shell to resist oxidation of SiC nanoparticles. This novel method of preparation of SiC@G core‐shell nanoparticles could be applied to large‐scale production and find diverse applications in related fields.

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In Situ synthesis of SiC-graphene core-shell nanoparticles using wet ball milling

Cited by 32 publications

References 23 publications

Preparation and tribological properties of eco‐friendly as‐exfoliated graphene in grease

Preparation and tribological properties of eco‐friendly as‐exfoliated graphene in grease

Effect of Different Rotational Speeds on Graphene-Wrapped SiC Core-Shell Nanoparticles in Wet Milling Medium

Controllable synthesis of SiC@Graphene core‐shell nanoparticles via fluidized bed chemical vapor deposition

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