N-methyl-2-pyrrolidone-exfoliated graphene nanosheets as sensitive determination platform for amaranth at the nanomolar level

Ionics ◽  
2016 ◽  
Vol 23 (1) ◽  
pp. 241-246 ◽  
Author(s):  
Wensheng Huang ◽  
Miao Zhang ◽  
Weibing Hu
Keyword(s):  
Graphene Nanosheets ◽  
Exfoliated Graphene ◽  
Sensitive Determination

Exfoliated graphene nanosheets as high-power anodes for lithium-ion batteries

2019 ◽  
Vol 29 (1) ◽  
pp. 81-87 ◽  
Author(s):  
Duc-Luong Vu ◽  
Yeon Ju Kwon ◽  
Soon Chang Lee ◽  
Jea Uk Lee ◽  
Jae-Won Lee
Keyword(s):  
Lithium Ion Batteries ◽  
High Power ◽  
Graphene Nanosheets ◽  
Lithium Ion ◽  
Exfoliated Graphene

Highly-sensitive Electrochemical Sensor for Cd2+and Pb2+Based on the Synergistic Enhancement of Exfoliated Graphene Nanosheets and Bismuth

2015 ◽  
Vol 28 (1) ◽  
pp. 63-68 ◽  
Author(s):  
Jiao Wang ◽  
Xuerong Chen ◽  
Kangbing Wu ◽  
Miao Zhang ◽  
Wensheng Huang
Keyword(s):  
Electrochemical Sensor ◽  
Graphene Nanosheets ◽  
Exfoliated Graphene ◽  
Synergistic Enhancement ◽  
Highly Sensitive

scholarly journals Protein-assisted scalable mechanochemical exfoliation of few-layer biocompatible graphene nanosheets

2021 ◽  
Vol 8 (3) ◽  
Author(s):  
Deepak-George Thomas ◽  
Steven De-Alwis ◽  
Shalabh Gupta ◽  
Vitalij K. Pecharsky ◽  
Deyny Mendivelso-Perez ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Graphene Nanosheets ◽  
Cost Effective ◽  
X Ray Diffraction ◽  
Cytotoxic Effects ◽  
Graphene Layers ◽  
Exfoliated Graphene ◽  
Transmission Electron ◽  
Few Layer Graphene

A facile method to produce few-layer graphene (FLG) nanosheets is developed using protein-assisted mechanical exfoliation. The predominant shear forces that are generated in a planetary ball mill facilitate the exfoliation of graphene layers from graphite flakes. The process employs a commonly known protein, bovine serum albumin (BSA), which not only acts as an effective exfoliation agent but also provides stability by preventing restacking of the graphene layers. The latter is demonstrated by the excellent long-term dispersibility of exfoliated graphene in an aqueous BSA solution, which exemplifies a common biological medium. The development of such potentially scalable and toxin-free methods is critical for producing cost-effective biocompatible graphene, enabling numerous possible biomedical and biological applications. A methodical study was performed to identify the effect of time and varying concentrations of BSA towards graphene exfoliation. The fabricated product has been characterized using Raman spectroscopy, powder X-ray diffraction, transmission electron microscopy and scanning electron microscopy. The BSA-FLG dispersion was then placed in media containing Astrocyte cells to check for cytotoxicity. It was found that lower concentrations of BSA-FLG dispersion had only minute cytotoxic effects on the Astrocyte cells.

Activated carbon felts with exfoliated graphene nanosheets for flexible all-solid-state supercapacitors

2019 ◽  
Vol 30 (4) ◽  
pp. 915-918 ◽  
Author(s):  
Zifang Zhao ◽  
Xiaojun Wang ◽  
Minjie Yao ◽  
Lili Liu ◽  
Zhiqiang Niu ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Solid State ◽  
Graphene Nanosheets ◽  
Exfoliated Graphene

Water vapor adsorption on low-temperature exfoliated graphene nanosheets

2012 ◽  
Vol 73 (12) ◽  
pp. 1440-1443 ◽  
Author(s):  
Ming-Xi Wang ◽  
Zheng-Hong Huang ◽  
Wei Lv ◽  
Quan-Hong Yang ◽  
Feiyu Kang ◽  
...  
Keyword(s):  
Water Vapor ◽  
Low Temperature ◽  
Graphene Nanosheets ◽  
Water Vapor Adsorption ◽  
Vapor Adsorption ◽  
Exfoliated Graphene

A graphite foil electrode covered with electrochemically exfoliated graphene nanosheets

2010 ◽  
Vol 12 (10) ◽  
pp. 1419-1422 ◽  
Author(s):  
Seung-Hun Lee ◽  
Seung-Deok Seo ◽  
Yun-Ho Jin ◽  
Hyun-Woo Shim ◽  
Dong-Wan Kim
Keyword(s):  
Graphene Nanosheets ◽  
Graphite Foil ◽  
Exfoliated Graphene ◽  
Foil Electrode

scholarly journals Electrochemically Exfoliated Graphene-Like Nanosheets for Use in Ceramic Nanocomposites

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2656
Author(s):  
Rosalía Poyato ◽  
Reyes Verdugo ◽  
Carmen Muñoz-Ferreiro ◽  
Ángela Gallardo-López
Keyword(s):  
Graphene Nanosheets ◽  
Ceramic Matrix Composite ◽  
Tetragonal Zirconia ◽  
Microstructural Characterization ◽  
Homogeneous Distribution ◽  
Graphene Layers ◽  
Exfoliated Graphene ◽  
Plasma Sintering ◽  
The Matrix ◽  
Spark Plasma

In this work, the synthesis of graphene-like nanosheets (GNS) by an electrochemical exfoliation method, their microstructural characterization and their performance as fillers in a ceramic matrix composite have been assessed. To fabricate the composites, 3 mol % yttria tetragonal zirconia (3YTZP) powders with 1 vol % GNS were processed by planetary ball milling in tert-butanol to enhance the GNS distribution throughout the matrix, and densified by spark plasma sintering (SPS). According to a thorough Raman analysis and SEM observations, the electrochemically exfoliated GNS possessed less than 10 graphene layers and a lateral size lower than 1 μm. However, they contained amorphous carbon and vacancy-like defects. In contrast the GNS in the sintered composite exhibited enhanced quality with a lower number of defects, and they were wavy, semi-transparent and with very low thickness. The obtained nanocomposite was fully dense with a homogeneous distribution of GNS into the matrix. The Vickers hardness of the nanocomposite showed similar values to those of a monolithic 3YTZP ceramic sintered in the same conditions, and to the reported ones for a 3YTZP composite with the same content of commercial graphene nanosheets.

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