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Mostrando ítems 1-10 de 377
Síntese direta do acetato de etila a partir do etanol sobre catalisadores de Au, Cu e AuCu suportados em zircônia monoclínica (m-ZrO2)
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Engenharia Química - PPGEQCâmpus São Carlos, 2018-03-09)
The ethanol conversion into ethyl acetate is a very important reaction, in economic and scientific fields. In the context of science, the propose of this work was to evaluate the activity of Au and Cu catalysts supported ...
Do the joint effects of size, shape and ecocorona influence the attachment and physical eco(cyto)toxicity of nanoparticles to algae?
(2020-03-15)
We systematically investigated how the combinations of size, shape and the natural organic matter (NOM)-ecocorona of gold (Au) engineered nanoparticles (ENPs) influence the attachment of the particles to algae and physical ...
Síntese e caracterização de partículas Janus (Si-Au)
(Universidade Federal de São CarlosUFSCarCâmpus São CarlosEngenharia Química - EQ, 2021-06-28)
Janus are colloidal particles with more than a single type of chemistry or surface composition, and can be of diferent sizes and shapes. Their anisotropic structure (diferent characteristics in diferent directions) allows ...
XAS study on the gold particle size of Au catalysts
(Brazilian Synchrotron Light Laboratory, 2010-12)
In the last few years, gold catalysts have generated a great amount of interest. This has been the result of two main findings: gold is the most active catalyst for ethyne hydrochlorination, and it is also effective for ...
Effects of compositional proportions, metal-ion concentration and pH conditions into the structural characteristics of Au, Pt and AuPt nanoparticlesEffects of compositional proportions, metal-ion concentration and pH conditions into the structural characteristics of Au, Pt and AuPt nanoparticles
(Revista Mexicana de Física, 2011)
Cluster size Effects in the surface-enhanced Raman scattering response of Ag and Au nanoparticle aggregates: experimental and theoretical insight
(American Chemical Society, 2013-10)
In this work we report the spectral evolution of the surface-enhanced Raman scattering (SERS) response of biotin molecules that generate the assembly of Ag and Au nanospheres (NSs) into clusters with controlled interparticle ...
Understanding the effects of metal particle size on the NO2 reduction from a DFT study
(Elsevier Science, 2019-09-30)
The study of the effect of particle size and low coordination sites in metal nanoparticles (Cun, Agn and Aun with n = 19, 38, 55, 79 and 116) on the reduction of NO2 to NO + O, was carried out using density functional ...
Evolution of the electronic structure during the epitaxial growth of Au on Pt(100)
(Elsevier Science, 2016-04)
We report an angle-resolved photoemission study of the electronic structure of Au layers grown epitaxially on Pt(100) in the coverage range 1-10 monolayers (ML). Our results include an analysis of the electronic band ...