نتایج جستجو برای: electrochemical exfoliation
تعداد نتایج: 54133 فیلتر نتایج به سال:
Single-layered graphene has unique electronic, chemical, and electromechanical properties. Recently, graphite exfoliation in N-methylpyrrolidone and molten salt has been demonstrated to generate monolayer exfoliated graphene sheets (EGS). However, these solvents are either high-priced or require special care and have high boiling points and viscosities, making it difficult to deposit the disper...
The aim of the present study was to determine the level of Tumor necrosis factor-alpha in aqueous humor and serum of patients with pseudo exfoliation syndrome. The materials and methods in this study, we measured the level of Tumor necrosis factor-alpha, in aqueous and serum of patients with pseudo exfoliation syndrome and compared the findings with healthy controls. The Results are Regarding A...
Well dispersion or intercalation/exfoliation of nanoscale fillers (such as nano-CaCO3 and nano-clay) in polymer matrix is currently not easy to be achieved. Supercritical carbon dioxide (ScCO2) has been reported to have great potential for facilitating the dispersion or intercalation/exfoliation of the nanoscale fillers in polymer matrix. So, in this paper, the effects of dissolved ScCO2 on the...
We present a novel fabrication method for incorporating nanometer to micrometer scale few-layer graphene (FLG) features onto substrates with electrostatic exfoliation. We pattern highly oriented pyrolytic graphite using standard lithographic techniques and subsequently, in a single step, exfoliate and transfer-print the prepatterned FLG features onto a silicon wafer using electrostatic force. W...
The black phosphorus (black-P) crystal is formed of covalently bound layers of phosphorene stacked together by weak van der Waals interactions. An experimental measurement of the exfoliation energy of black-P is not available presently, making theoretical studies the most important source of information for the optimization of phosphorene production. Here, we provide an accurate estimate of the...
We report the exfoliation of graphite in aqueous solutions under high shear rate [∼ 108 s-1] turbulent flow conditions, with a 100% exfoliation yield. The material is stabilized without centrifugation at concentrations up to 100 g/L using carboxymethylcellulose sodium salt to formulate conductive printable inks. The sheet resistance of blade coated films is below ∼2Ω/□. This is a simple and sca...
The interaction between Laponite and other constituents in complex systems greatly depends on its available surface area. We report a study of exfoliation dynamics of Laponite in aqueous suspensions by NMR relaxometry. It showed that Laponite particles exfoliate to the same extent in a concentration range of 0.5-3% w/w. Faster increase of specific wetted surface area of Laponite particles in mo...
To progress from the laboratory to commercial applications, it will be necessary to develop industrially scalable methods to produce large quantities of defect-free graphene. Here we show that high-shear mixing of graphite in suitable stabilizing liquids results in large-scale exfoliation to give dispersions of graphene nanosheets. X-ray photoelectron spectroscopy and Raman spectroscopy show th...
The topological insulator 2D Bi2Se3 is promising for electronic devices due to its unique properties; however, it challenging prepare antioxidative nanosheets since prone oxidation. Surface passivation using ligand agents after exfoliation works well protect the surface, but process time-consuming and technically challenging; a agent that stable under highly biased potential significant in situ...
In this work, we have studied the methods of electrochemical processing materials in order to give them new functional properties. Experimental data on production corrosion-resistant coatings based Zn-Ni and Zn-Co alloys from ammonium oxalate electrolytes study their protective properties are presented. The questions carbon nanomaterials by anodic exfoliation graphite sulfuric acid considered. ...
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