73930709015

Professor Information

University

Pontifícia Universidade Católica do Rio Grande do Sul

Position

Professor de Física

Citations(all)

636

Citations(since 2016)

311

Cited By

478

hIndex(all)

12

hIndex(since 2016)

10

i10Index(all)

14

i10Index(since 2016)

10

Email

University Profile Page

Pontifícia Universidade Católica do Rio Grande do Sul

Research & Interests List

fotovoltaica

catalise

nanopartículas

sputtering

fotocatalise

Co-Authors

H-index: 93
Jairton Dupont

Jairton Dupont

Universidade Federal do Rio Grande do Sul

H-index: 52
Liane Marcia Rossi

Liane Marcia Rossi

Universidade de São Paulo

H-index: 45
Sergio Ribeiro Teixeira

Sergio Ribeiro Teixeira

Universidade Federal do Rio Grande do Sul

H-index: 30
Daniel Weibel

Daniel Weibel

Universidade Federal do Rio Grande do Sul

H-index: 28
Pedro Migowski

Pedro Migowski

Pontifícia Universidade Católica do Rio Grande do Sul

H-index: 27
Heberton Wender

Heberton Wender

Universidade Federal de Mato Grosso do Sul

H-index: 24
Fabiano Bernardi

Fabiano Bernardi

Universidade Federal do Rio Grande do Sul

H-index: 21
Adriano Friedrich Feil

Adriano Friedrich Feil

Pontifícia Universidade Católica do Rio Grande do Sul

H-index: 14
Izete Zanesco

Izete Zanesco

Pontifícia Universidade Católica do Rio Grande do Sul

Professor FAQs

What is 73930709015's h-index at Pontifícia Universidade Católica do Rio Grande do Sul?

The h-index of 73930709015 has been 10 since 2016 and 12 in total.

What are 73930709015's research interests?

The research interests of 73930709015 are: fotovoltaica, catalise, nanopartículas, sputtering, fotocatalise

What is 73930709015's total number of citations?

73930709015 has 636 citations in total.

What are the co-authors of 73930709015?

The co-authors of 73930709015 are Jairton Dupont, Liane Marcia Rossi, Sergio Ribeiro Teixeira, Daniel Weibel, Pedro Migowski, Heberton Wender, Fabiano Bernardi, Adriano Friedrich Feil, Izete Zanesco.

Top articles of 73930709015

Dynamic tuning of naked ruthenium clusters/nanoparticles in ionic liquids cages to boost CO2 hydrogenation to formic acid

The reduction of atmospheric CO2 is indeed a major challenge for modern life due to its increase as a result of the intensified contemporary industrial activities and its contribution to global warming. One of the most desirable approaches to accomplish this goal is to convert CO2 into C1 feedstocks, such as formic acid (FA). In this regard, naked ruthenium clusters and nanoparticles (1.8 ± 0.3 nm) are prepared by magnetron sputtering into different supported ionic liquid phases (SILPs) that demonstrated remarkable efficiency in producing a total of 2.2 M of free FA with a TONs of 7305 in 1-Butyl-3-methylimidazolium acetate ionic liquid media at 87 °C. The higher efficiently is related to the hydrophobic/hydrophilic effect presents in the ionic liquid-cages of the SILPs akin to the micelle nano (micro)reactors, which act as catalytic membranes enabling the tuning of FA production. DFT calculations support the mechanistic …

Authors

Muhammad I Qadir,Marcus V Castegnaro,Felipe F Selau,Daniel L Baptista,Gustavo Chacon,Renato B Pontes,Allan M Lisbôa,Dario Eberhardt,Jairton Dupont

Journal

Applied Catalysis B: Environmental

Publish By

Elsevier

Publish Date

2024/2/1

PII. 085 Unveiling enhanced green hydrogen generation: Constructing a photocatalytic hybrid system by physical enrichment

This study presents photocatalytic systems comprised of gold nanoparticles (AuNPs) immobilized by ionic liquids (IL) with remarkable efficacy, and versatility in facilitating hydrogen evolution reactions (HER) through water-splitting (WSR) or organic photo reforming (OPR). Obtaining these highly efficient photocatalysts involves the combination of two promising approaches: magnetron sputtering and IL superficial covering, creating hybrid materials with direct metal-TiO 2 interfaces. Under the investigated conditions, the AuNPs (Ø mean= 4-10 nm) presence profoundly enhances the photocatalytic activity of the pristine TiO 2 in methanol photo reforming (MPR) producing from 0.02 up to 8.25 mmol of H 2 per gram of catalyst per hour. This remarkable difference is attributed to the synergistic interaction of the tricomponent IL-metal-TiO 2 surface, leading to a robust modification of the electronic and photophysical …

Authors

Gustavo Chacon,João V Jaeguer,Allan De Moraes Lisbôa,Jairton Dupont,Jonder Morais,Mellanye Graf,Fabiano S Rodembusch,Brunno L Albuquerque,Dario Eberhardt,Adriano Feil

Journal

22° CBCAT

Publish Date

2023/9/7

Glycerol carbonate synthesis over nanostructured titanate catalysts: Effect of morphology and structure of catalyst

The indirect conversion of CO2 into glycerol carbonate using DMC was investigated using pristine sodium titanate nanotubes (NaTNT) and nanostructured titanates (calcined NaTNT at different temperatures) as catalysts. The calcination changes the morphology of the nanostructured titanates, between 200 and 400 °C the nanotubes shape is retained, however above these temperatures (500 and 600 °C) nanoribbons were identified, as well as nanorods obtained at 700 °C. A significant decrease in specific surface area and total pore size in temperatures up 500 °C was also observed. Furthermore, a decrease in the Ti+4/Ti+2 ratio and in the binding energy of Ti 2p3/2 and Ti 2p1/2 were observed, indicating an increase in the electron density and consequently increase in the Lewis acidity character of the titanium atom. All the nanostructured titanates showed good catalytic activity with glycerol conversion and GC …

Authors

Carolina M Scheid,Wesley F Monteiro,Michele O Vieira,Luisa Alban,Leandro Luza,Dario Eberhardt,Renato V Gonçalves,Adriano F Feil,Jeane EA de Lima,Rosane A Ligabue

Journal

Chemical Engineering Research and Design

Publish By

Elsevier

Publish Date

2023/9/1

Photocatalytic effects on Au@ TiO2 confined in BMIm. NTf2 ionic liquid for hydrogen evolution reactions

We report a photocatalytic device based on gold nanoparticles (AuNPs/TiO2) coated with an ionic liquid (IL) as a very active, stable, and versatile system for hydrogen evolution reactions (HERs) via methanol photo reforming (MPR) and photocatalytic water-splitting (WSR) reaction. The devices prepared by magnetron sputtering yield hybrid materials with direct Au–TiO2 interactions that were subsequently coated with BMIm.NTf2 (IL@Au@TiO2). The IL presence critically enhances the photocatalytic performance given its interaction with the AuNPs and TiO2 surfaces by decreasing the flat band energy levels and the Schottky barrier thickness. The results show an increase in the number of charge carriers yielding a capacitor-like effect generated by interactions of IL and Au@TiO2 particles. Apparent quantum yield (AQY) up to 28.3% under UV irradiation (365 nm) and 22.9% at 405 nm irradiation were observed in the …

Authors

Fabiano S Rodembusch,Brunno L Albuquerque,Wellington DG Gonçalves,Jonder Morais,Daniel L Baptista,Allan de Moraes Lisbôa,Adriano Feil,Dario Eberhardt,José Espeso,Jairton Dupont

Journal

International Journal of Hydrogen Energy

Publish By

Pergamon

Publish Date

2023/9/22

Evaluation of antibacterial activity of thin and ultrathin Ag and Cu coatings deposited on glass and PET-G substrates via sputtering deposition

Authors

Adrielle Dornelles Dewes,Allan de Moraes Lisbôa,Maximiliano Santos da Rocha,Dario Eberhardt,Sílvia Dias de Oliveira,Ricardo Meurer Papaléo,Adriano F Feil

Publish Date

2022

O futuro da confiabilidade da navegação aérea dependente do clima espacial

A atividade aérea mundial cresce de forma constante, o que aumenta a densidade de aeronaves em todo o território geográfico. Por esse motivo, existe uma tendência para novas tecnologias de navegação que, atendendo requisitos de integridade, precisão, disponibilidade e continuidade, vão permitir a manutenção da segurança aérea mesmo com o aumento do número de voos. Os meios de posicionamento mais utilizados hoje são dependentes de satélites, que abrangem o Sistema de Satélites de Navegação Global (GNSS). O sistema é dependente do equilíbrio geomagnético da Terra e do meio eletrônico da ionosfera. Ambos são alvo de bombardeamentos de radiação solar e cósmica, ie clima espacial. O presente trabalho tem como objetivo ser uma fonte informativa, ou review, da relação entre clima espacial e aviação, para auxiliar na conscientização dos leitores, principalmente àqueles pilotos, principais responsáveis pela segurança dos voos. Será apresentada uma forma simplificada da teoria dos fenômenos do clima espacial, como estes podem afetar a aviação e as tecnologias, o histórico de eventos que atingiram o planeta e as iniciativas que foram e estão sendo desenvolvidas para sua mitigação e seu monitoramento. Como metodologia, foram consultados artigos científicos, livros teóricos, manuais, reportagens, sites de agências de pesquisa e apresentações de organizações. http://dx. doi. org/10.22480/rev. unifa. v34n2

Authors

João Pedro Souza Aguiar,Dario Eberhardt

Journal

Revista da UNIFA

Publish Date

2021/12/22

Reduced graphene oxide decorated with Ni-Fe-Mo permalloy obtained by sputtering

This work illustrates an effective method for obtaining hybrid nanoparticles of Ni-Fe-Mo permalloy and reduced graphene oxide (rGO). The metallic nanoparticles were spread by the sputtering technique, which allowed a good dispersion of the metallic nanoparticles onto rGO substrate powder. TEM showed permalloy nanoparticles smaller than 8 nm uniformly distributed throughout rGO. Permalloy/rGO hybrid with 10.5 wt% loading of permalloy nanoparticles was calculated by TGA. RBS experiment reveals that permalloy target and the nanoparticles deposited have similar composition. The interaction between permalloy and rGO was studied by FT-IR. Ni-Fe-Mo/rGO presented an electrical conductivity of 122 Scm−1, significantly higher than the original rGO and a magnetization hysteresis-loop coercivity of 16 Oe at room temperature. To our knowledge this is the first work in which permalloy nanoparticles are …

Authors

Thuany Garcia Maraschin,Samuel Corvello Vilar,Dario Eberhardt,Adriano Friedrich Feil,José Antonio Malmonge,Julian Geshev,Griselda Barrera Galland,Nara Regina de Souza Basso

Journal

Materials Today Communications

Publish By

Elsevier

Publish Date

2021/3/1

Templated growth of Pd nanoparticles using sputtering deposition process and its catalytic activities

A simple method based on sputtering deposition of Pd onto mesoporous SiO2 (SBA-15) was employed to produce supported Pd nanoparticles (NPs) that can be used as hydrogenation catalysts. The use of sputtering deposition eliminates contaminants and avoids additional drawbacks of traditional chemical methods applied to prepare heterogeneous supported metal catalysts. A mechanical resonant stirrer was used to revolve the SBA-15 powder and ensure homogeneous distribution of the Pd NPs over the support. The SBA-15 pores act as templates for Pd NPs and drive nanostructure growth. Consequently, the NPs obtained have the same diameter as that of the SBA-15 channels (~5 nm) and elongated particles are formed as sputtering deposition increases. The SBA-15 supported Pd NPs (Pd NPs/SBA-15) were tested in a probe hydrogenation of cyclohexene reaction to evaluate the catalytic activity of the Pd …

Authors

Dario Eberhardt,Pedro Migowski,Sérgio R Teixeira,Adriano F Feil

Journal

Journal of Nanoscience and Nanotechnology

Publish By

American Scientific Publishers

Publish Date

2018/3/1

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