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Kinetic measurements during transient film growth on zinc
Lobo, R. F. M.; Santos, Diogo M. F.; Sequeira, César A. C.; Yun, ChenQuimica Nova, Vol. 32, Nº2 ; The electrochemical behaviour of zinc has been extensively studied in alkaline and acid media, but only a few studies have been reported in neutral solutions, particularly in deaerated media. Zinc passivation in neutral medium and the effect of the ClO4- ion on the nucleation and growth of the passive layer is studied in this paper by a transient technique at different electrolyte ...
Fluorescence in nanostructured fulleride films
Lobo, R. F. M.; Costa, M. S.; Ribeiro, J. H. F.; Sequeira, C. A. C.; Pereira, P.Applied Physics Letters, 89 ; Nanostructuring of fullerene C60 beam deposited films is achieved by electrochemical reduction in a potassium hydroxide aqueous solution. Alkali fulleride clusters are formed at the electrode, as it is illustrated by cyclic voltammetry, x-ray diffraction, and scanning tunneling microscopy. Fluorescence emission from fluorophore doped fullerene reduced films was investigated by flu...
Neutral C60 effusive source for atomic collisions with fullerene
Lobo, R. F. M.; Silva, N. T.Review of scientific instruments, Vol.72, Nº9 ; A neutral C60 effusive source was assembled in a crossed molecular-beam apparatus in order to perform atom–molecule electron transfer collisions and its calibration by time-of-flight mass spectrometry. This source consists of a stainless-steel oven where the C60 sublimation takes place. Typical operation temperatures are in the range of 723 up to 888 K. Through t...
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