Výsledky vyhledávání - "Jean C. S. Costa"

Base-Free Benzyl Alcohol Aerobic Oxidation Catalyzed by AuPdNPs Supported on SBA-15 and TiO2/SBA-15 Mesoporous Materials

Autor: Jussara Morais da Silva, Jean C. S. Costa, Carla Verônica Rodarte de Moura, Geraldo E. Luz, Janildo Lopes Magalhães, Renilma Carvalho Sousa, Edmilson Miranda de Moura

Publikováno v: Catalysis Letters. 152:585-599

It is known that the oxidative reactions of alcohols are sensitive to the characteristics of the catalyst, in such a way that the properties of the support are as important as those of the metallic phase. We consider the functionalization of support

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::859fc519e0824515b0d7614d91b10e26
https://doi.org/10.1007/s10562-021-03624-6

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Effect of calcination temperature on the application of molybdenum trioxide acid catalyst: Screening of substrates for biodiesel production

Autor: Wiury Chaves de Abreu, Jean C. S. Costa, Marco A. S. Garcia, Carla Verônica Rodarte de Moura, Edmilson Miranda de Moura, Bernardo Ferreira Pinto

Publikováno v: Fuel. 239:290-296

The influence of calcination temperatures on the physical-chemical properties and catalytic performance of MoO3 catalysts, synthesized using a hydrothermal approach, was studied. We present herein a catalyst calcined at 600 °C able to convert buriti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::021a9406789f38f9ecba3bdadd9d65fe
https://doi.org/10.1016/j.fuel.2018.11.025

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Screening of the Au:Pt Atomic Ratio Supported in SrCO3: Effects on the Performance of the Solvent-Free Oxidation of Benzyl Alcohol

Autor: Edmilson Miranda de Moura, Janildo Lopes Magalhães, Ali H. Bashal, Jean C. S. Costa, Francisco das Chagas Alves Lima, Francisco Samuel Da Cunha Lima Batista, Itaciara Erliny Maria da Silva Melo, Laise Nayra dos Santos Pereira, Carla Verônica Rodarte de Moura, Marco A. S. Garcia, Alexia G. P. Lima

Publikováno v: Journal of the Brazilian Chemical Society.

We have prepared, by a sol-immobilization method, bimetallic catalysts with different Au:Pt atomic ratios supported on commercial SrCO3. The catalytic performance for the oxidation reaction of benzyl alcohol of such materials was compared to the mono

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ff3dd3d7c06d13c0e392019deb5b16d3
https://doi.org/10.21577/0103-5053.20190207

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TiO2 nanotubes decorated with Au nanoparticles for Photocatalytic Hydrogen Generation under UV-Visible and Visible Light Irradiations

Autor: Johan Rene Gonzalez, Giovanna Machado, Marco A. S. Garcia, Thiago André S. Soares, Noelia Franco, Naythalla A.M. Saraiva, Jean C. S. Costa

Publikováno v: Anais da Academia Brasileira de Ciências v.92 n.3 2020
Anais da Academia Brasileira de Ciências
Academia Brasileira de Ciências (ABC)
instacron:ABC
Anais da Academia Brasileira de Ciências, Volume: 92, Issue: 3, Article number: e20200504, Published: 23 OCT 2020
Anais da Academia Brasileira de Ciências, Vol 92, Iss 3 (2020)

The development of stable and active TiO2 nanotubes (NTs) decorated with plasmonic gold nanoparticles (Au NPs) represents a strategy for charge-transfer processes improvements. However, organic capping ligands used for Au NPs synthesis usually remain

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef288f44ef91c987d44c4b0c8d2e2365
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000500505

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Nonressonant nonlinear optical switching behavior of Ag monometallic and Ag@Au bimetallic investigated by femtosecond Z-Scan measurements

Autor: Jean C. S. Costa, F.E.P. Santos, Nefe J.B. Silva, Claudevan A. Sousa, Naythalla A.M. Saraiva, Sara D.G. Mariano, Hans A. Garcia

Publikováno v: Optics & Laser Technology. 142:107247

Metallic nanoparticles are of great interest in technological applications, especially in photonics. Here, we describe the nonlinear optical properties of colloidal solutions of monometallic silver (AgNPs) and bimetallic nanoparticles, with Ag (core)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::532209bc53670e827635a45a5cb7a9f3
https://doi.org/10.1016/j.optlastec.2021.107247

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Trimetallic nanotubes: A bifunctional substrate for the catalytic and spectroscopic study using Surface-enhanced Raman Spectroscopy

Autor: Carla Verônica Rodarte de Moura, Naythalla A.M. Saraiva, Jean C. S. Costa, Edmilson Miranda de Moura, André M.R. Simões

Publikováno v: Vibrational Spectroscopy. 115:103274

Surface-enhanced Raman scattering (SERS) has been used in various research fields because of high sensitivity and rapid data acquisition. When combined with catalysis in a bifunctional nanostructure, it is possible to monitor molecular transformation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3eeb2dd1c6be4b78e476414c74a0bbd7
https://doi.org/10.1016/j.vibspec.2021.103274

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Hydrogen production from aqueous glycerol using titanate nanotubes decorated with Au nanoparticles as photocatalysts

Autor: Jean C. S. Costa, Thalles M.F. Marques, Francisco Xavier Nobre, Giovanna Machado, Jardel Meneses Rocha, Reinaldo Nascimento Morais, Bartolomeu C. Viana, Thiago André S. Soares, José Milton Elias de Matos, Anupama Ghosh

Publikováno v: Anais da Academia Brasileira de Ciências, Vol 91, Iss 4 (2019)
Anais da Academia Brasileira de Ciências v.91 n.4 2019
Anais da Academia Brasileira de Ciências
Academia Brasileira de Ciências (ABC)
instacron:ABC
Anais da Academia Brasileira de Ciências, Volume: 91, Issue: 4, Article number: e20190082, Published: 28 NOV 2019

Protonated titanate nanotubes (HTiNts) were synthesized using the hydrothermal method, followed by proton exchange with acid. Gold nanoparticles decorated titanate nanotubes (AuHTiNts) were obtained by the reduction of AuCl4- under vigorous stirring

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::771b315eb679857694744f1801c36a29
http://www.scielo.br/pdf/aabc/v91n4/0001-3765-aabc-91-04-e20190082.pdf

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Gold Supported on Strontium Surface-Enriched CoFe2O4 Nanoparticles: a Strategy for the Selective Oxidation of Benzyl Alcohol

Autor: Carla Verônica Rodarte de Moura, Aryane Tofanello, Carlos E. S. Ribeiro, Laise Nayra dos Santos Pereira, Jean C. S. Costa, Edmilson Miranda de Moura, Marco A. S. Garcia

Publikováno v: Journal of the Brazilian Chemical Society v.30 n.6 2019
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 30, Issue: 6, Pages: 1317-1325, Published: 23 MAY 2019

The synthesis of efficient and reusable gold-based catalysts for the selective oxidation of alcohols is a strategy for the development of green processes. Pre-formed nanoparticles syntheses are an easy way to produce controlled-nanosized gold materia

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6425c0e5ab84aa959368f3ccfc762dc0
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532019000601317

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