Filmes finos obtidos a partir de xerogel de V 2 O 5 com distintas quantidades de Li intercalado eletroquimicamente foram caracterizados utilizando diferentes técnicas in-situ. As mudanças nas propriedades mecânicas foram investigadas utilizando medidas de impedância eletroacústica e estes experimentos indicaram que o processo de intercalação não produz mudanças importantes nas propriedades visc...

vanadium silicates such as v-al-analcime, v-analcime, v-magediite and v-zsm-11 were synthesized using vanadium pentoxide or vanadyl sulfates. vanadium silicates with analcime structure with and without aluminum (v-al-analcime, v-analcime) were prepared as pure phase by hydrothermal crystallization from a gel with molar composition of (1 sio2; 0.2 v2o5; 1 na2o; 0.034 al2o3; 35.7 h2o) and (1 sio2...

Vanadium silicates such as V-Al-analcime, V-analcime, V-magediite and V-ZSM-11 were synthesized using vanadium pentoxide or vanadyl sulfates. Vanadium silicates with analcime structure with and without aluminum (V-Al-analcime, V-analcime) were prepared as pure phase by hydrothermal crystallization from a gel with molar composition of (1 SiO2; 0.2 V2O5; 1 Na2O; 0.034 Al2O3; 35.7 H2O) and (1 SiO2...

We report a new phenomenon, named here as the "lens" effect, in the directed-assembly process of nanowires (NWs) on self-assembled monolayer (SAM) patterns. In this process, the adsorption of NWs is focused in the nanoscale regions at the center of microscale SAM patterns with gradient surface molecular density just like an optical lens focuses light. As a proof of concepts, we successfully dem...

Using single crystal V2O5 as a sample, we tested the performance of the new aberration corrected GATAN spectrometer on a monochromatised 200 kV FEG FEI (S)TEM. The obtained V L and O K ELNES were compared with that obtained in a common GATAN GIF and that in the new spectrometer, without monochromatised beam. The performance of the new instrumentation is impressive: recorded with an energy-resol...

The application of metals in biological systems has been a rapidly growing branch science. Vanadium investigated and reported as an anticancer agent. Melanoma is the most aggressive type skin cancer, incidence which increasing annually worldwide. It paramount importance to identify novel pharmacological agents for melanoma treatment. Herein, systematic review publications including “Melanoma Va...