Browsing Exact and Earth Sciences by Author "Castegnaro, Marcus Vinicíus"
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Carbon supported Pd–Cu nanoalloys : support and valence band structure influence on reduction and oxidation reactions
Castegnaro, Marcus Vinicíus; Gorgeski, Andreia; Alves, Maria do Carmo Martins; Morais, Jonder (2021) [Journal article]The present study has tracked the changes in the electronic and structural properties of Pd–Cu nanoalloys that were influenced by the composition and chosen support. Carbon supported Pd–Cu nanoalloys (PdxCu1−x/C for x = ... -
Charge transfer effects on the chemical reactivity of PdxCu1−x nanoalloys
Castegnaro, Marcus Vinicíus; Gorgeski, Andreia; Balke, Benjamin; Alves, Maria do Carmo Martins; Morais, Jonder (2016) [Journal article]This work reports on the synthesis and characterization of PdxCu1−x (x = 0.7, 0.5 and 0.3) nanoalloys obtained via an eco-friendly chemical reduction method based on ascorbic acid and trisodium citrate. The average size ... -
A dispenser–reactor apparatus applied for in situ XAS monitoring of Pt nanoparticle formation
Boita, Jocenir; Castegnaro, Marcus Vinicíus; Alves, Maria do Carmo Martins; Morais, Jonder (2015) [Journal article]In situ time-resolved X-ray absorption spectroscopy (XAS) measurements collected at the Pt L3-edge during the synthesis of Pt nanoparticles (NPs) in aqueous solution are reported. A specially designed dispenser–reactor ... -
Ionic liquid confined spaces controlled catalytic CO2 cycloaddition of epoxides in BMIm.ZnCl3 and its supported ionic liquid phases
Tomazett, Vinicius K.; Chacón, Gustavo; Marin, Graciane; Castegnaro, Marcus Vinicíus; Chagas, Rafael P. das; Liao, Luciano Morais; Dupont, Jairton; Qadir, Muhammad Irfan (2023) [Journal article]Chemical fixation of CO2 to epoxides is an atom-economic and environment-benign approach to generate cyclic carbonates. Herein, we report efficient activation of the different aromatic and aliphatic epoxides at ambient ...