A5002302840- Electrocatalysts for Energy Conversion
- Copper-based nanomaterials and applications
- Nanomaterials for catalytic reactions
- Electrochemical sensors and biosensors
- Advanced Photocatalysis Techniques
- Fuel Cells and Related Materials
- Gold and Silver Nanoparticles Synthesis and Applications
- Catalytic Processes in Materials Science
- Electrochemical Analysis and Applications
- Nanocluster Synthesis and Applications
- Advanced Memory and Neural Computing
- Asymmetric Hydrogenation and Catalysis
- Advanced battery technologies research
- Conducting polymers and applications
- Advanced biosensing and bioanalysis techniques
- Carbon dioxide utilization in catalysis
- Enzyme-mediated dye degradation
- Electronic and Structural Properties of Oxides
- Coffee research and impacts
- Advanced Chemical Sensor Technologies
- Advancements in Battery Materials
- Extraction and Separation Processes
- ZnO doping and properties
- TiO2 Photocatalysis and Solar Cells
- Advanced Nanomaterials in Catalysis
Karlsruhe Institute of Technology
2025
Universidade Estadual de Londrina
2021-2022
Universidade de São Paulo
2018-2021
University of Oxford
2021
Universidade Cidade de São Paulo
2021
The localized surface plasmon resonance (LSPR) excitation in plasmonic nanoparticles has been used to accelerate several catalytic transformations under visible-light irradiation. In order fully harness the potential of catalysis, multimetallic containing a and component, where LSPR-excited energetic charge carriers intrinsic active sites work synergistically, have raised increased attention. Despite exciting studies observing rate enhancements, controlling reaction selectivity remains very...
Gold nanoparticles (Au NPs) have been widely employed in catalysis. Here, we report on the synthesis and catalytic evaluation of a hybrid material composed Au NPs deposited at surface magnetic cobalt ferrite (CoFe2O4). Our reported approach enabled well-defined Au/CoFe2O4 NPs. The were uniformly support, displayed spherical shape, monodisperse size. Their performance was investigated towards reduction 4-nitrophenol selective oxidation dimethylphenylsilane to dimethylphenylsilanol. active...
Pt nanoparticles (Pt NPs) supported on carbon have been widely employed as electrocatalysts toward oxygen reduction reaction. The development of more efficient that enable one to reduce or even not require the use is a central challenge. In addition control over physical and chemical features NPs, metal–support interactions can be enhance activities via generation exposure surface-active sites. this context, we report herein composed NPs TiO2 microspheres, were subsequently impregnated onto...
The localized surface plasmon resonance (LSPR) excitation in plasmonic nanoparticles can enhance or mediate chemical transformations. Increased reaction rates for several reactions have been reported due to this phenomenon; however, the fundamental understanding of mechanisms and factors that affect activities remains limited. Here, by investigating hydrogenation as a model transformation employing different reducing agents, H2 NaBH4 , which led pathways, we observed Au nanoparticle...
In this work we propose the use of statistical mixture design in construction a biosensor device based on graphite oxide, platinum nanoparticles and biomaterials obtained from Botryosphaeria rhodina MAMB-05. The was characterized by electrochemical impedance spectroscopy. Under optimized experimental parameters factorial design, applied to voltammetric determination chlorogenic acid (CGA) measured as 5-O-caffeoylquinic (5-CQA). response linear (R2 = 0.998) for 5-CQA concentration range...
Abstract Traditionally, bandgap materials are a prerequisite to photocatalysis since they can harness reasonable range of the solar spectrum. However, high impedance across and low concentration intrinsic charge carriers have limited their energy conversion. By contrast, metallic nanoparticles possess sea free electrons that effectively promote transition excited state for reactions. Here, an atomic layer bimetallic concoction silver–gold shells is precisely fabricated onto Au core via...
Abstract Aiming at discovering new positive electrode materials with superior electrochemical performance for application in lithium‐ion batteries, this work focuses on the design of fluorine‐free, manganese‐rich disordered rock salt (DRX) cathodes. Samples a starting composition Li 1.1 Mn 0.8 Ti 0.1 O 2 are successfully prepared by facile solid‐state synthesis and further optimized through experiments approach. Several key factors examined, including carbon type content as well lithium...
We develop herein plasmonic-catalytic Au-IrO2 nanostructures with a morphology optimized for efficient light harvesting and catalytic surface area; the nanoparticles have nanoflower morphology, closely spaced Au branches all partially covered by an ultrathin (1 nm) IrO2 shell. This nanoparticle architecture optimizes optical features due to interactions of plasmonic forming electromagnetic hot spots, ultra-thin layer maximizes use this expensive catalyst. concept was evaluated towards...
Abstract Designing efficient anode CO‐tolerant electrocatalysts is critical in low‐temperature fuel cell catalysts fueled either by H 2 /CO or alcohol. We demonstrate that the incorporation of TiO nanocubes (TiO NCs) on Carbon Vulcan supports, followed synthesis Pt NPs at their surface (Pt/TiO NCs‐C material), led to improvements performance towards electrooxidation carbon monoxide, ethanol, methanol, ethylene glycol, and glycerol acidic media relative commercial Pt/C Pt/TiO ‐C counterparts...
The presence of capping ligands can block the adsorption amine ligand on gold NPs, preventing formation a ligand–metal interface able to activate H<sub>2</sub> for selective hydrogenation reactions.
Abstract In this paper, we aimed at investigating the effect of presence small TiO 2 crystallites over transfer hot electrons from Au nanoparticles (NPs) mediated by surface plasmon resonance (SPR) excitation and its subsequent photocatalytic activities. To end, employed colloidal spheres composed 8.5 nm in size decorated with NPs (TiO –Au) 17 as model materials. Moreover, degradation methylene blue (MB) under visible light was a target plasmonic transformation. We found that activity...
Further improvements and mechanistic understanding of the electrocatalytic enhancements towards oxygen reduction reaction (ORR) are required to meet cost/energy demands thus enable their practical applications in polymer electrolyte fuel cells. An investigation enhancement mechanisms stability controlled electrocatalysts comprised Pt nanoparticles supported on TiO2/C materials was herein performed. The catalysts were prepared by depositing Pt, over surface TiO2 colloidal spheres. These then...
Further improvements and mechanistic understanding of the electrocatalytic enhancements towards oxygen reduction reaction (ORR) are required to meet cost/energy demands thus enable their practical applications in polymer electrolyte fuel cells. An investigation enhancement mechanisms stability controlled electrocatalysts comprised Pt nanoparticles supported on TiO2/C materials was herein performed. The catalysts were prepared by depositing Pt, over surface TiO2 colloidal spheres. These then...
We develop herein plasmonic-catalytic Au-IrO$_2$ nanostructures with a morphology optimized for efficient light harvesting and catalytic surface area; the nanoparticles have dendritic morphology, closely spaced Au branches all partially covered by an ultrathin (1 nm) IrO$_2$ shell. This nanoparticle architecture optimizes optical features due to interactions of plasmonic forming electromagnetic hot spots, ultra-thin layer maximizes use this expensive catalyst. concept was evaluated towards...