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Author Mas’udah, Kusuma Wardhani ♦ Nugraha, I. Made Ananta ♦ Abidin, Saiful ♦ Mufid, Ali ♦ Astuti, Fahmi ♦ Darminto
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ CARBON OXIDES ♦ CARBONIZATION ♦ COCONUTS ♦ GRAPHENE ♦ OPTICAL PROPERTIES ♦ PARTICLE SIZE ♦ PARTICLES ♦ POWDERS ♦ TEMPERATURE DEPENDENCE ♦ TEMPERATURE RANGE 0400-1000 K ♦ TRANSMISSION ELECTRON MICROSCOPY ♦ ULTRAVIOLET SPECTRA ♦ VISIBLE RADIATION ♦ VISIBLE SPECTRA ♦ WATER ♦ X-RAY DIFFRACTION
Abstract Reduced graphene oxide (r-GO)powder has been prepared from coconut shells by carbonization process at 400°C for 3, 4 and 5 hours.Theresulted sample mass was reduced to be 60% relativelycompared to the starting material. The longer heating duration has also led to the rGO with reduced crystalinity according to the X-ray diffractometry data and TEM. The rGO solution was prepared by adding powders of 5, 10 and 15 grams into 50 ml destiled water and then centrifused at 6000 rpm for 30 minutes.The resulted solutions were seen to be varied form clear transparant, light and dark yellow to black. Measurement using particle size analyser shows that the individual rGO particles tends to be agglomerating each others to form bigger size clustering, manifested by the observed bigger size particles for the increasing amount of soluted rGO powders in water.The varying UV-visible spectra of these rGO solutions together with their optical bandgaps will also be discussed in this study.
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-04-19
Publisher Place United States
Volume Number 1725
Issue Number 1


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