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Spectroelectrochemical analysis of HOPG surface controlled modification
(Elsevier Science, 2017-04-14)
In situ Raman spectroscopy is used to characterize the changes induced by electrochemical oxidation and silver electrodeposition at the step-edge and terrace sites of highly-oriented pyrolytic graphite (HOPG) surfaces. Ag ...
AFM study of oxygen reduction products on HOPG in the LiPF6–DMSO electrolyte
(Royal Society of Chemistry, 2013-12)
Ex situ atomic force microscopy (AFM) has been used to study the morphology of oxygen reduction products in the LiPF6–dimethyl sulfoxide (DMSO) electrolyte, i.e. Li2O2 on a highly oriented pyrolytic graphite (HOPG) surface. ...
Low energy ion scattering in He/HOPG system
(Elsevier Science, 2008-02)
Low energy ion scattering (LEIS) is a unique tool in surface analysis, since it provides the atomic composition of the outer atomic layer, and time of flight ion scattering (TOF) is a non-destructive method of analysis ...
Surface studies of lithium-oxygen redox reactions over HOPG
(Elsevier Science, 2016-04)
The O2/Li2O2 electrode reaction has been studied on low surface area HOPG electrodes in 0.1 M LiPF6 in dimethyl sulfoxide (DMSO) electrolyte. Studies were performed using electrochemical cells coupled to a XPS spectrometer ...
Structural and magnetic changes induced by electron and ion irradiation on HOPG
(Elsevier, 2015-04)
In recent decades, many studies reported magnetism in carbon-based materials. This phenomenon was attributed to structural defects within the sample. Many authors showed an increase of magnetization in HOPG (Highly Oriented ...
The origin of high electrocatalytic activity of hydrogen peroxide reduction reaction by a g-C3N4/HOPG sensor
(Royal Society of Chemistry, 2017-08)
Graphitic carbon nitride (g-C3N4) was synthesized from a low-cost precursor by means of a thermal process. The product was characterized by several spectroscopic techniques and the crystallinity was analyzed by X-ray ...
Spontaneous formation of metallic nanostructures on highly oriented pyrolytic graphite (HOPG): an ab initio and experimental study
(Royal Society of Chemistry, 2014-05)
We have investigated the decoration of step-edges of HOPG by Ag, Au and Pt using experimental and theoretical approaches. Metallic nanowires can be formed on bare or functionalized step-edges. Energy dispersion analysis ...
Magnetismo de defectos generados por irradiación electrónica en HOPG
(2014-05)
La exploración del magnetismo inducido por defectos en materiales basados en el carbono está motivada por el desafío de encontrar métodos para la fabricación de magnetos a temperatura ambiente, de interés en sistemas de ...
Disorder in H+-irradiated HOPG: Effect of impinging energy and dose on Raman D-band splitting and surface topography
(Beilstein-Institut, 2018-10-19)
Disorder was induced in pristine highly oriented pyrolytic graphite (HOPG) by irradiation with H+ ions with energies of 0.4 MeV and 1 MeV, and doses of 1014 ions/cm2 and 1016 ions/cm2. Raman spectroscopy was used as the ...