Eduardo Di Mauro

TL;DR: In this paper, the superoxide radical anion O2− from tetra(4-carboxyphenyl)porphyrin (TCPP) adsorbed on TiO2 in DMSO and irradiated by visible light was studied using EPR spectroscopy.

TL;DR: There are two important findings described in this work, 84% of adsorbed glyphosate strongly interacted to ferrihydrite as an inner-sphere complex and phosphate and amine groups are involved in this interaction.

TL;DR: The adsorption of cysteine on hematite, magnetite and ferrihydrite was studied using FT-IR, electron paramagnetic resonance (EPR), Mössbauer spectroscopy and X-ray diffractometry, and it was shown that cystine interacts with iron oxides, changing the relative amounts of iron oxide and hydroxide.

TL;DR: The EPR spectrum of the petroleum of the Campos Basin, Rio de Janeiro, Brazil shows signals characteristic of free radical, vanadyl (VO 2+ ) and iron III ion (Fe 3+ ). The value of g =2.0045±0.0001 corresponds to free radical species with a peak-to-peak line width Δ H =4.64± 0.03 G as discussed by the authors.

TL;DR: It is shown that nucleic acid bases penetrate into the interlayer of the clays and oxidize Fe2+ to Fe3+, thus, this interaction cannot be regarded as a simple physical adsorption.