Surfactant-assisted de-agglomeration of graphite nanoparticles by wet ball mixing

Chen, Chun‐Nan; Chen, Ya-Lang; Tseng, Wenjea J.

doi:10.1016/j.jmatprotec.2007.03.109

Cited by 26 publications

(11 citation statements)

References 17 publications

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“…The intensity of the 2D bands is lower for the PP2 samples than PP1, which can be attributed to defects in the graphene structure [ 33 , 34 , 35 ]. This decrease in intensity is characteristic of the disorder in the c-axis [ 36 , 37 ] and turbostratic structure formation derived from the disordered graphene layer arrangement resulting from the chemical reaction [ 13 ].…”

Section: Resultsmentioning

confidence: 99%

Turbostratic Carbon/Graphene Prepared via the Dry Ice in Flames Method and Its Purification Using Different Routes: A Comparative Study

et al. 2022

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Although the dry ice method used to synthesize turbostratic carbon/graphene is little known and used, it has significant advantages over others, such as the following: it is low cost, simple, and a large quantity of material can be obtained using some inorganic and highly available acids (which can be reused). Despite the above advantages, the main reason for its incipient development is the resulting presence of magnesium oxide in the final product. In the present work, three different treatments were tested to remove this remnant using some acid chemical leaching processes, including hydrochloric acid, aqua regia, and piranha solution. Based on the experimental evidence, it was determined that using aqua regia and combining the leaching process with mechanical milling was the most efficient way of removing such a remnant, the residue being only 0.9 wt.%. This value is low compared to that obtained with the other acid leaching solutions and purification processes (2.8–29.6 wt.%). A mandatory high-energy mechanical milling stage was necessary during this treatment to expose and dissolve the highly insoluble oxide without secondary chemical reactions on the turbostratic carbon. High-energy mechanical milling is an effective route to exfoliate graphite, which allows the magnesium oxide to be more susceptible to acid treatment. A yield of turbostratic carbon/graphene of 1 wt.% was obtained from the metallic Mg. The obtained surface area was 504.8 m2g−1; this high value resulting from the intense exfoliation can potentiate the use of this material for a wide variety of applications.

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Section: Resultsmentioning

confidence: 99%

Turbostratic Carbon/Graphene Prepared via the Dry Ice in Flames Method and Its Purification Using Different Routes: A Comparative Study

et al. 2022

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“…Second, the high collision activity of the particles induces cold welding during the high-energy milling. These two steps produce a large mean agglomerate size in long-time milling 43 . One of the significant challenges during the ink preparation-printing-sintering is the likelihood of oxides formation.…”

Section: Discussionmentioning

confidence: 99%

“…Second, the high collision activity of the particles induces cold welding during the high-energy milling. These two steps produce a large mean agglomerate size in long-time milling 43 .…”

Section: Discussionmentioning

confidence: 99%

Introduction of Chalcogenide Glasses to Additive Manufacturing: Nanoparticle Ink Formulation, Inkjet Printing, and Phase Change Devices Fabrication

Simon

Badamchi

Subbaraman

et al. 2021

Sci Rep

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Chalcogenide glasses are one of the most versatile materials that have been widely researched because of their flexible optical, chemical, electronic, and phase change properties. Their application is usually in the form of thin films, which work as active layers in sensors and memory devices. In this work, we investigate the formulation of nanoparticle ink of Ge–Se chalcogenide glasses and its potential applications. The process steps reported in this work describe nanoparticle ink formulation from chalcogenide glasses, its application via inkjet printing and dip-coating methods and sintering to manufacture phase change devices. We report data regarding nanoparticle production by ball milling and ultrasonication along with the essential characteristics of the formed inks, like contact angle and viscosity. The printed chalcogenide glass films were characterized by Raman spectroscopy, X-ray diffraction, energy dispersive spectroscopy and atomic force microscopy. The printed films exhibited similar compositional, structural, electronic and optical properties as the thermally evaporated thin films. The crystallization processes of the printed films are discussed compared to those obtained by vacuum thermal deposition. We demonstrate the formation of printed thin films using nanoparticle inks, low-temperature sintering and proof for the first time, their application in electronic and photonic temperature sensors utilizing their phase change property. This work adds chalcogenide glasses to the list of inkjet printable materials, thus offering an easy way to form arbitrary device structures for optical and electronic applications.

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“…The intensity of the 2D bands is lower for the PP2 samples than PP1, which can be attributed to defects in the graphene structure [28][29][30]. This decrease in intensity is characteristic to the disorder in the c-axis [31,32] and turbostratic structure formation derived from the disordered graphene layer arrangement resulting from the chemical reaction [12].…”

Section: 𝑁𝑐 =mentioning

confidence: 99%

Graphene Prepared via the Dry Ice in Flames Method and its Purification Using Different Routes: A Comparative Study

Cuadros-Lugo¹,

Martinez-Rodríguez²,

Lardizábal-Gutiérrez³

et al. 2022

Preprint

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Although the dry ice method used to synthesize exfoliated graphite/graphene is little known and used, it has significant advantages over others: it is low cost, simple, and a large quantity of material can be obtained using some inorganic and highly available acids (which can be reused). Despite the above advantages, the main reason for its incipient development is the resulting presence of magnesium oxide in the final product. In the present work, three different treat-ments were tested to remove this remnant using some acid chemical leaching processes, making use of hydrochloric acid, aqua regia, and piranha solution. Based on the experimental evidence, it was found that using aqua regia and combining the leaching process with mechanical milling was the most efficient way of removing such a remnant, the residue being only 0.9 wt.%. This value is low when compared to that obtained with the other acid leaching solutions and purifi-cation process (2.8 - 29.6 wt.%). A mandatory high-energy mechanical milling stage was neces-sary during this treatment, in order to expose and dissolve the highly insoluble oxide without secondary chemical reactions on the graphenes. High-energy mechanical milling is an effective route to exfoliate graphite/graphene, which allows the magnesium oxide to be more susceptible to acid treatment. The obtained surface area was 504 m2g-1; this high value resulting from the in-tense exfoliation can potentiate the use of this material for a wide variety of applications.

show abstract

Surfactant-assisted de-agglomeration of graphite nanoparticles by wet ball mixing

Cited by 26 publications

References 17 publications

Turbostratic Carbon/Graphene Prepared via the Dry Ice in Flames Method and Its Purification Using Different Routes: A Comparative Study

Turbostratic Carbon/Graphene Prepared via the Dry Ice in Flames Method and Its Purification Using Different Routes: A Comparative Study

Introduction of Chalcogenide Glasses to Additive Manufacturing: Nanoparticle Ink Formulation, Inkjet Printing, and Phase Change Devices Fabrication

Graphene Prepared via the Dry Ice in Flames Method and its Purification Using Different Routes: A Comparative Study

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