Abstract
Graphene is a two-dimensional crystal of carbon atoms arranged in a honeycomb lattice. It is a zero band gap semimetal with very unique physical and chemical properties which make it useful for many applications such as ultra-high-speed field-effect transistors, p-n junction diodes, terahertz oscillators, and low-noise electronic, NEMS and sensors. When the high quality mass production of this nanomaterial is still a big challenge, we developed a process which will be an important step to achieve this goal. Atomic Force Microscopy, Scanning Electron Microscopy, Scanning tunneling microscopy, High Resolution Transmission Electron Microscopy, X-Ray Diffraction, Raman spectroscopy, Energy Dispersive X-ray system were investigated to characterize and examine the quality of this product.
Highlights
Graphene is a two-dimensional hexagonal allotrope of carbon
Much attention has been paid to the production of large amounts of high-quality graphene platelets, which have attracted considerable attention for possible applications in various fields where chemical graphitization from grahene oxide to graphene has been introduced for mass production where the compatibility of high-quality graphene and wafer-scale processing is a big challenge [8]
This project demonstrates a mass production of pure graphene powder via our modified hummers method followed by different dispersion and purification process
Summary
Since its isolation in 2004, this seemingly simple material has revealed a number of intriguing physical properties [1] It has a large theoretical specific surface area (2630 m2∙g−1), high intrinsic mobility (200,000 cm 2 v−1∙s−1), [2] [3] high Young’s modulus (~1.0 TPa) [4] and thermal conductivity (~5000 Wm−1∙K−1), [5] and its optical transmittance (~97.7%). These exciting properties make this carbon material a rising star in the world of nanomaterials and open the way to a large space of optoelectronic applications including sensors, transistors, terahertz imaging, composites, membranes, energy storage devices, batteries, and thin coatings for solar cells and LCD displays [6]. This project demonstrates a mass production of pure graphene powder via our modified hummers method followed by different dispersion and purification process
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