Aunp
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Gold Nanoparticle/Tetrapyridylporphyrin Hybrid Material: Spectroscopic and Electrocatalytic Properties and Sensor Application
An electrocatalytic active hybrid material prepared by successive stepwise coordinative deposition of 20 nm diameter gold nanoparticles (AuNP) with 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine (TPyP) on fluorine-doped tin oxide (FTO) substrates previously modified with 3-mercaptopropylsilane is described. Their interaction and assembly were studied by UV-Vis
J. Braz. Chem. Soc.. Publicado em: 2020-11
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2. Ações contra a Covid-19 na População com Síndrome de Down
An electrocatalytic active hybrid material prepared by successive stepwise coordinative deposition of 20 nm diameter gold nanoparticles (AuNP) with 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine (TPyP) on fluorine-doped tin oxide (FTO) substrates previously modified with 3-mercaptopropylsilane is described. Their interaction and assembly were studied by UV-Vis
Arq. Bras. Cardiol.. Publicado em: 2020-11
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3. Nanostructured Systems Obtention Using LbL Self-Assembly or the Cysteine-Assisted Adsorption Method and Their Application as a Water Splitting Single Catalyst
The present work evaluated the effect on charge transfer in functionalized TiO2 nanostructured systems using different binders. We highlight the conditions required to form self-assembled systems by varying the number of layers, as well as by substituting them for an organic binder, cysteine. Additionally, we study the pH effect of the precursor solution (HA
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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4. Using Gold Nanoparticles as Passive Sampler for Indoor Monitoring of Gaseous Elemental Mercury
This study reports a functional passive sampler for monitoring gaseous elemental mercury (GEM). The material consists of gold nanoparticles (AuNP) deposited forming a film on thiol-modified glass slides. AuNP colloid was synthesized using sodium citrate, resulting in a size of 24.2 ± 0.8 nm, as determined by transmission electron microscopy analysis. For th
J. Braz. Chem. Soc.. Publicado em: 2017-07
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5. AuNP@TiO2 Catalyzed Peroxidation of Ethyl- and n-Propylbenzene: Exploring the Interaction Between Radical Species and the Nanoparticle Surface
Ethyl- and n- propylbenzene peroxidation has been studied in the presence of supported gold nanoparticles on TiO2(AuNP@TiO2). The decomposition products obtained from Fenton-induced cumene hydroperoxide decomposition, as well as the oxidation products of ethyl- and n- propylbenzene, implicate the participation of reactive oxygen species adsorbed on the AuNP
J. Braz. Chem. Soc.. Publicado em: 2016-02
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6. Intercalated 4-Aminobenzenethiol between Au and Ag Nanoparticles: Effects of Concentration and Nanoparticles Neighborhood on its SERS Response
In this work is reported the investigation of the 4-aminobenzenethiol (4-ABT) surface-enhanced Raman scattering (SERS) response for different 4-ABT concentrations as well as when this molecule is intercalated between Ag and Au nanoparticles (AgNP and AuNP). SERS substrates consisting of the individual AgNP or AuNP and bi-layer AgNP/4-ABT/AuNP or AuNP/4-ABT/A
J. Braz. Chem. Soc.. Publicado em: 2015-05
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7. Padronização da técnica de nanopartícula de ouro não modificada (AuNPs) para detecção de Actinobacillus pleuropneumoniae em pulmões de suínos
Testes diagnósticos baseados na detecção de ácidos nucleicos sem amplificação prévia através da utilização de nanopartículas de ouro (AuNPs) têm sido descritos para várias enfermidades. Este trabalho teve como objetivo desenvolver uma técnica de AuNPs não modificada para detecção de Actinobacillus pleuropneumoniae (App). Utilizaram-se 70 amo
Pesq. Vet. Bras.. Publicado em: 2014-07
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8. Metal nanostructures with magnetic and biodegradable properties for medical applications
Nanopartículas de Au (AuNP) foram sintetizadas por redução do HAuCl4 com NaBH4 ou ácido l-ascórbico, tendo sido estabilizadas por cisteína, cisteamina e PEG-SH. Com AuNPs, preparou-se um material nanocompósito através da precipitação de soluções acetônicas de ácido poliláctico (PLA), em dispersões aquosas de AuNPs, com obtenção de PLAs comp
J. Braz. Chem. Soc.. Publicado em: 2013-02
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9. Imobilização da enzima glicose oxidase em filmes nanoestruturados para aplicação em biossensores / Glucose oxidase immobilization on nanostructured thin films for application in biosensors
Aplicações de nanomateriais em biossensores têm recebido muito interesse nos últimos anos. Entre os vários tipos de biossensores estudados, sensores de glicose têm recebido destaque devido a sua importância em diagnósticos clínicos. Apesar do grande avanço no monitoramento de glicose nas últimas décadas, ainda há muitos desafios para alcançar u
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/07/2012