4 Aminophenol
Mostrando 1-12 de 32 artigos, teses e dissertações.
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1. Silver nanoparticles incorporated PVC films: evaluation of structural, thermal, dielectric and catalytic properties
Abstract In this work, silver nanoparticle – polyvinylchloride (SNC-PVC) composites were synthesized by loading 2.5% to 10.0% silver ions to PVC using simple solution casting technique. Material properties including dielectric, thermal stability were discussed in some detail. Incorporation of silver nanoparticles (SNPs) in the PVC matrix was confirmed by U
Polímeros. Publicado em: 03/10/2019
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2. Thermal, dielectric and catalytic behavior of palladium doped PVC films
Abstract The present paper discusses the aspects of synthesizing palladium (Pd) doped (Pd+2 and Pd0) poly(vinyl chloride) (PVC) using simple solution cast technique. The Pd loading to PVC was altered from 2.5% to 10.0% and the material properties were studied using UV-Visible spectroscopy (UV-Vis), X-ray diffraction (XRD), Energy-dispersive X-ray spectroscop
Polímeros. Publicado em: 04/07/2019
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3. NOVOS HÍBRIDOS BASEADOS EM OXIHIDRÓXIDO DE FERRO(III) E NANOPARTÍCULAS DE OURO (AuNPs/FeOOH) COMO CATALISADORES PARA A REDUÇÃO DE POLUENTES ORGÂNICOS AMBIENTAIS
A new δ-FeOOH supported nano-Au catalyst was prepared by a facile method using HAuCl4 as the gold source and NaBH4 as the reducing agent. The samples (denoted as AuNPs/FeOOH) were characterized by means of X-ray diffraction (XRD), UV-vis and infrared spectroscopies and scanning electron microscope (SEM). The obtained characterization data confirmed the form
Quím. Nova. Publicado em: 2017-06
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4. Ag Nanoparticles-Based Zinc Hydroxide-Layered Hybrids as Novel and Efficient Catalysts for Reduction of 4-Nitrophenol to 4-Aminophenol
Silver nanoparticles and zinc hydroxide-layered hybrid materials (AgNPs/ZHL) have been successfully developed as efficient catalysts for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) with sodium borohydride. A facile and rapid visible-light assisted green route was used for the deposition of silver nanoparticles (AgNPs) on the external surfac
J. Braz. Chem. Soc.. Publicado em: 2017-01
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5. Desenvolvimento de biossensor enzimático para diagnóstico de lesão no tecido hepático
High concentrations of alanine aminotransferase (ALT) in human serum indicate hepatic disorders. This paper reports a new procedure for ALT determination using pyruvate oxidase (PyO) immobilized onto graphite electrode modified with poly(4-aminophenol) and 4-aminoantypirine as an indicator of enzymatic system. The characterization of the resulting bioelectro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/07/2011
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6. A Biosensor Using Poly(4-Aminophenol)/acetylcholinesterase modified graphite electrode for the detection of dichlorvos
The properties of poly(4-aminophenol) modified graphite electrode as material for the immobilization of acetylcholinesterase were investigated by the Cyclic Voltammetry, Electrochemical Impedance Spectroscopy and Atomic Force Microscopy. The polymer was deposited on graphite electrode surface by the oxidation of 4-aminophenol and then acetylcholinesterase wa
Brazilian Archives of Biology and Technology. Publicado em: 2011-12
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7. AMPEROMETRIC SENSOR BASE OF AN IMPRESSION OF POLYMER MOLECULAR PROTOPORPHYRIN IX WITH IRON FOR THE DETERMINATION OF 4-AMINOPHENOL / SENSOR AMPEROMÉTRICO A BASE DE UM POLÍMERO DE IMPRESSÃO MOLECULAR COM PROTOPORFIRINA IX DE FERRO PARA A DETERMINAÇÃO DE 4-AMINOFENOL
This work presents an analytical study on determination of 4-aminophenol (4-APh) with a system based on molecurlaly imprinted polymer (MIP) and iron protoporphyrin IX as biomimetic sensor of the peroxidase enzyme. The MIP synthesis was performed by the precipitation method and the analytical determinations by amperometric measurements with a glassy carbon el
Publicado em: 2010
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8. Synthesis, characterization and kinetics of catalytically active molecularly imprinted polymers for the selective recognition of 4-aminophenol
No presente trabalho um polímero com impressão molecular (MIP) seletivo para 4-aminofenol (4-APh) foi sintetizado através de técnica de polimerização em bulk. A polimerização foi realizada em tubo de vidro contendo 4-APh, Fe(III)protoporfrina(IX) (hemina, Fe(III)PPIX), ácido metacrílico (MAA), etileno glicol dimetacrilato (EGDMA) e 2,2'-azo-bis-iso
Journal of the Brazilian Chemical Society. Publicado em: 2009
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9. Desenvolvimento de procedimentos analíticos limpos e com alta sensibilidade para a determinação de espécies de interesse ambiental / Development of clean analytical procedures with high sensitivity for determination of species of environmental interest
Clean analytical procedures with high sensitivity for the determination of species of environmental interest (carbaryl, sulphate and chlorine) were developed. Flow systems with solenoid micropumps were coupled to long optical pathlength spectrophotometry or cloud point extraction procedures, aiming the concentration of species for determination without emplo
Publicado em: 2009
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10. Desenvolvimento de sensor bioletroquímico para detecção da hanseníase
Leprosy is a chronic, granulomatous and dermatological disease, from infection caused by the bacillus Mycobacterium leprae. It is object of intervention of the state, because when untreated cause disability in the economically active population. Brazil remains one of the four endemic countries responsible for 34% of all cases registered at the beginning of 2
Publicado em: 2008
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11. Biotransformation of Hydroxylaminobenzene and Aminophenol by Pseudomonas putida 2NP8 Cells Grown in the Presence of 3-Nitrophenol
Biotransformation products of hydroxylaminobenzene and aminophenol produced by 3-nitrophenol-grown cells of Pseudomonas putida 2NP8, a strain grown on 2- and 3-nitrophenol, were characterized. Ammonia, 2-aminophenol, 4-aminophenol, 4-benzoquinone, N-acetyl-4-aminophenol, N-acetyl-2-aminophenol, 2-aminophenoxazine-3-one, 4-hydroquinone, and catechol were prod
American Society for Microbiology.
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12. The Metabolic Pathway of 4-Aminophenol in Burkholderia sp. Strain AK-5 Differs from That of Aniline and Aniline with C-4 Substituents
Burkholderia sp. strain AK-5 utilized 4-aminophenol as the sole carbon, nitrogen, and energy source. A pathway for the metabolism of 4-aminophenol in strain AK-5 was proposed based on the identification of three key metabolites by gas chromatography-mass spectrometry analysis. Strain AK-5 converted 4-aminophenol to 1,2,4-trihydroxybenzene via 1,4-benzenediol
American Society for Microbiology.