Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Francisco Carlos Nart"'
Publikováno v:
Química Nova, Vol 23, Iss 3, Pp 384-391 (2000)
Externí odkaz:
https://doaj.org/article/facefdef18f74c7a837ba12c963d47b6
Autor:
Erico Teixeira-Neto, Giuseppe A. Camara, Francisco Carlos Nart, Janaina F. Gomes, K. Bergamaski
Publikováno v:
Journal of Electroanalytical Chemistry. 617:171-178
In this work we investigate some aspects of the electrooxidation of CO in dispersed Pt nanoparticles. In order to verify the effect of the particle size on the kinetics of CO electrooxidation we investigated morphological characteristics of these mat
Publikováno v:
Electrochimica Acta. 53:4396-4406
Platinum is the most investigated catalyst for the electrochemical oxidation of small organic molecules. This metal presents high overpotentials for the oxidation of organic compounds and the poisoning of active sites by strongly adsorbed intermediat
Publikováno v:
Journal of Solid State Electrochemistry. 12:1599-1603
The electro-oxidation of methanol at supported tungsten carbide (WC) nanoparticles in sulfuric acid solution was studied using cyclic voltammetry, potentiostatic measurements, and differential electrochemical mass spectroscopy (DEMS). The catalyst wa
Autor:
Mônica B. P. Mello Barreto, Francisco Carlos Nart, Ícaro de Sousa Moreira, Marcia L. A. Temperini, Izaura C.N. Diógenes
Publikováno v:
Journal of Solid State Electrochemistry. 11:1585-1590
Surface-Enhanced Raman Scattering (SERS) spectra of [Ru(CN)5(pyS)]4− (RupyS) complex self-assembled monolayer (SAM) were obtained on gold and silver surfaces at 632.8 and 413.1 nm excitation radiations, respectively. The bands assigned to the heme
Autor:
L. J. Deiner, Francisco Carlos Nart
Publikováno v:
Journal of Solid State Electrochemistry. 12:511-516
The time dependence of the concentration of CO2 in an electrochemical thin layer cavity is studied with Fourier transform infrared spectroscopy (FTIR) in order to evaluate the extent to which the thin layer cavity is diffusionally decoupled from the
Publikováno v:
Electrochemistry Communications, Vol 9, Iss 5, Pp 1113-1119 (2007)
Bulk CO oxidation experiments have been carried out in sulphuric and perchloric acid solutions on Pt(111) and Pt(110) electrodes under hanging meniscus rotating disk electrode (HMRDE) configuration. The comparison between the two different electrolyt
Pt-Co/C nanoparticles as electrocatalysts for oxygen reduction in H2SO4 and H2SO4/CH3OH electrolytes
Autor:
Ernesto Rafael Gonzalez, Fabio Henrique Barros de Lima, Edson A. Ticianelli, Francisco Carlos Nart, William H. Lizcano-Valbuena, Erico Teixeira-Neto
Publikováno v:
Electrochimica Acta. 52:385-393
The oxygen reduction reaction (ORR) was studied on carbon dispersed Pt and Pt-Co alloyed nanocatalysts with high contents of Co in H2SO4 and H2SO4/CH3OH solutions. The characterization techniques considered were transmission electron microscopy (TEM)
Autor:
Francisco Carlos Nart, P. Berci Filho, Eduardo Rezende Triboni, Marcelo Henrique Gehlen, Janildo Lopes Magalhães, Robson Valentim Pereira
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 183:165-170
The photophysical properties of N-methyl-1,8-naphthalimide (NI) and 4-phenoxy-N-methyl-1,8-naphthalimide (4-PNI) are studied by steady-state and time-resolved emission measurements. Both absorption and fluorescence spectra are red-shifted when the el
Autor:
Osvaldo N. Oliveira, Valtencir Zucolotto, Christopher M.A. Brett, Francisco Carlos Nart, Frank N. Crespilho
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
In this work, we exploit the molecular engineering capability of the layer-by-layer (LbL) method to immobilize layers of gold nanoparticles on indium tin oxide (ITO) substrates, which exhibit enhanced charge transfer and may incorporate mediating red