氧化石墨烯(grapheneoxide,GO):一种通过氧化石墨得到的层状材料。体相石墨经发烟浓酸溶液处理后,石墨烯层被氧化成亲水的石墨烯氧化物,石墨层间距由氧化前的3.35Å增加到7~10Å,经加热或在水中超声剥离过程很容易形成分离的石墨烯氧化物片层结构。XPS、红外光谱(IR)、固体核磁共振谱(NMR)等表征结果显示石墨烯氧...
reduced graphene oxide是什么意思？
XPSHigh quality graphene oxide (GO) and reduced graphene oxide (rGO) have been synthesized by chemical oxidation of graphite flakes via three modified Hummers methods using a mixture of sulfuric acid (H2SO4), phosphoric acid (H3PO4) and nitric acid (HNO3) as intercalating agents and potassium...
The structural analysis is carried out by X‐ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, high‐resolution transmission electron microscopy (HRTEM), X‐ray photoelectron spectroscopy (XPS), UV﹙is absorption spectroscopy and photoluminescence (PL) spectroscopy...
We report the feasibility of using reduced graphene oxide (RGO) as a cost-effective and high performance cathode material for sodium-ion batteries (SIBs). Graphene oxide is synthesized by a modified Hummers’ method and reduced using a solid-state microw
All XPS measurements were taken in a SIGMA PROBE (ThermoVG) using a monochromatic Al-Kα X-ray source at 100 W. Surface analyses of graphene papers were collected by optical microscopy (Microscopes Inc., wm0039000a S39A). The microstructure was observed by field emission scanning electron ...
The structure and morphology of resulting RGO-MoO 3 nanocomposite were characterized using X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), transmission electron microscopy (TEM) and field...
The calculated RO/C of GO and rGO using XPS analysis are 5.37% and 1.77%, respectively. The present study revealed the successful and cost effective nature of the chemical oxidation, and the reduction processes for the production of GO and rGO out of natural vein graphite. Graphical abstract ...
graphene oxide (GO) and a composite of reduced graphene oxide and zinc oxide (rGO/ZnO). The synthesis involved modified Hummers' and hydrothermal methods, unveiling the formation of rGO through deoxygenation and the integration of nano-sized ZnO particles onto rGO, as demonstrated by XPS and TEM...
J.B., B.G., and R.D. conceived and designed the study. M.L. performed fluorinations of reduced graphene oxide. J.B. performed the experiments and provided data analyses. G.K. performed FIB-SEM analyses. R.D. and C.N. performed XPS analyses of samples. All authors discussed the res...