Biomass (fallen leaves) was used directly as carbon source to synthesize Ce doped and C coated Li4Ti5O12(LTO) in alkaline ballmilling medium. The unique porosity structure of fallen leaves and their trace amount of S elements can improve the Li ions migration ability and stability by coating a loose layer consisted of carbon quantum dots and induci...
Biomass (fallen leaves) was used directly as carbon source to synthesize Ce doped and C coated Li4Ti5O12(LTO) in alkaline ballmilling medium. The unique porosity structure of fallen leaves and their trace amount of S elements can improve the Li ions migration ability and stability by coating a loose layer consisted of carbon quantum dots and induci...
Technetium (Tc-99) is an abundant, long-lived radioactive fission product whose mobility in the subsurface is largely governed by its oxidation state. Tc immobilization is crucial for radioactive waste management and environmental remediation. Tc(IV) incorporation in spinels has been proposed as a novel method to increase Tc retention in glass wast...
Passivation at grain boundaries was investigated on copper with Electrochemical Scanning Tunneling Microscopy. The depth in intergranular regions was measured and its variation was discussed in terms of dissolution or passive film formation. The Cu(I) passive film is found to be thicker at grain boundaries than on grains but with a similar stoichio...
Published in Journal of Solid State Electrochemistry
Electrochemical scanning tunneling microscopy (ECSTM) was applied to analyze in situ the passivation of grain boundaries on microcrystalline copper in 0.1 M NaOH aqueous solution. Two types of boundaries, assigned to coherent twin and random grain boundaries, were studied in three different states of the copper surface: metallic after cathodic redu...
In-situ Diffuse Reflectance Infrared Fourier Transform (In-situ DRIFT) Spectroscopy was employed to investigate the reaction mechanism of NH3-Selective Catalytic Reduction (SCR) upon NO on CrOx-CeO2 binary oxide at 473 K. The surface adsorbed species on the CrOx-CeO2 binary oxide during the SCR reaction were analyzed. To elucidate the reaction proc...
Photoelectron spectroscopic measurements have been performed, with synchrotron radiation on PbSe/CdSe heteronanocrystals that initially consist of core-shell structures. The study of the chemical states of the main elements in the nanocrystals shows a reproducible and progressive change in the valence-band and core-level spectra under photon irradi...
FAPESP (Brazil)
FAPESP (Brazil)
