XPS and structural studies of high quality graphene oxide and …
2019年8月1日 · High 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 (H2 SO 4), phosphoric acid (H3 PO 4) and nitric acid (HNO3) as intercalating agents and potassium permanganate (KMnO4) and hydrogen peroxide (H2 O 2) ...
XPS spectra of GO and RGO: (A) survey spectrum of GO, RGO…
Mixed matrix PVDF polymeric membranes were incorporated with β–CD grafted graphene oxide (GO) nanocomposites (β–CD-g-GO) via nonsolvent induced phase separation method and used in the ...
Graphene oxide and reduced graphene oxide studied by the …
2014年8月1日 · Production of graphene from GO requires strong reduction procedure (thermal, chemical, photothermal, electrochemical) to reduce GO, where the proposed reduction methods should be optimised with respect to obtained graphene structure and easy, low cost, nontoxic procedures for a large-scale graphene production.
Simultaneous Nitrogen Doping and Reduction of Graphene Oxide
2009年10月9日 · We developed a simple chemical method to obtain bulk quantities of N-doped, reduced graphene oxide (GO) sheets through thermal annealing of GO in ammonia. X-ray photoelectron spectroscopy (XPS) study of GO sheets annealed at various reaction temperatures reveals that N-doping occurs at a temperature as low as 300 °C, while the highest doping ...
3D NiO hollow sphere/reduced graphene oxide composite for …
2017年7月12日 · Used as glucose sensing material, the 3D NiO hollow sphere/rGO composite modified electrode exhibits high sensitivity of ~2.04 mA mM −1 cm −2, quick response time of less than 5 s, good stability,...
Graphene oxide as a radiation sensitive material for XPS dosimetry
2020年3月1日 · The suitability of graphene oxide (GO) foils as radiation sensitive materials for soft X-ray irradiation is investigated by means of X-ray photoelectron spectroscopy (XPS). In particular GO micrometric foils have been irradiated by soft X-rays at a 1486.6 eV energy at high flux (>10 12 photons/cm 2 s) in ultra-high vacuum.
XPS spectra of GO and rGO. | Download Scientific Diagram
In this study, our aim was to synthesize CoNi-carbide (CoNi-C)/reduced graphene oxide (rGO) hybrids by annealing CoNi-cyanide bridged coordination polymers (CoNi-CP) under a nitrogen atmosphere....
C1s XPS spectra of GO and RGO. | Download Scientific Diagram
Graphene oxide (GO) was prepared using the modified Hummers’ method and a reduction step was held on GO films to produce reduced GO (rGO). C-TCEs were fabricated by over-coating the AgNWs...
Flexible sensor with electrophoretic polymerized graphene
2021年10月26日 · We demonstrate a novel, flexible sensor with graphene oxide/PEDOT:PSS (GO/PEDOT:PSS) composite for voltammetric determination of selective low levels of dopamine. The well-distributed GO and...
N-doped reduced graphene oxide for room-temperature NO gas sensors
2021年10月20日 · In this study, we use nitrogen-doped to improving the gas-sensing properties of reduced graphene oxide. Graphene oxide was prepared according to a modified Hummers’ method and then nitrogen-doped...