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View article: Influence of temperature on the characterization and optical behavior of feldspar, Al₂O₃/feldspar and Al₂O₃ ceramics
Influence of temperature on the characterization and optical behavior of feldspar, Al₂O₃/feldspar and Al₂O₃ ceramics Open
The present study produced pieces of small thickness, uniform, and simple geometry through uniaxial pressing. Where the load was applied to compact the feldspar, Al2O3/feldspar and Al2O3 powders in only one direction. This technique was ch…
View article: Synthesis and optical transitions of digital inks for ceramic application
Synthesis and optical transitions of digital inks for ceramic application Open
Digital inks for application in ceramics represented a great advance since their origin, which allowed them to be implemented industrially in a massive way for the manufacture of ceramic plates. Within this context, this research presents …
View article: New method of impregnating ZnO nanoparticles on mercerized and non-mercerized cotton fabrics
New method of impregnating ZnO nanoparticles on mercerized and non-mercerized cotton fabrics Open
The expansion of the textile market depends on new technologies such as antibacterial, hydrophobic, UV-protected fabrics, etc. The study of this type of textile involves analysis of the surface area of fibers and their interaction with the…
View article: Corrosion resistance of 5052 aluminum alloy using hydrophobic silane coatings
Corrosion resistance of 5052 aluminum alloy using hydrophobic silane coatings Open
The fabrication of silane-based hydrophobic surfaces depends on factors such as organic substitution reactions, the extension of the surface area being covered, and the distribution of hydroxyl groups on the surface area to increase the an…
View article: Evaluation of corrosion of 5052 aluminum alloy using superhydrophobic coatings based on stearic acid
Evaluation of corrosion of 5052 aluminum alloy using superhydrophobic coatings based on stearic acid Open
The hydrophobicity of a surface gives it peculiar properties, making it non-sticky and more resistant to corrosion. Stearic acid (SA) is saturated carboxylic acid that has C18 in molecular structure. The longer the carbon chains of fatty a…
View article: Effects of Adding Silver Oxide Nanoparticles to Anodized Titanium Surfaces
Effects of Adding Silver Oxide Nanoparticles to Anodized Titanium Surfaces Open
The present study aimed to analyze the effects of the anodization process and addition of silver nanoparticles by sealing process on corrosion resistance and biofilm formation in titanium. For this purpose, CP grade 2 titanium samples were…
View article: Determination of Reflectance Spectra and Colorimetry of Titanium and Tungsten Oxides Obtained by Microwave-assisted Hydrothermal Synthesis
Determination of Reflectance Spectra and Colorimetry of Titanium and Tungsten Oxides Obtained by Microwave-assisted Hydrothermal Synthesis Open
Sustainability has driven the use of heterogeneous photocatalysis as one of the primary methods for environmental decontamination, reduction, degradation, remediation, or transformation of polluting chemical residues and purification treat…
View article: Characterization of titanium oxide thin films obtained by galvanostatic anodization in black acacia pyroligny liqueur
Characterization of titanium oxide thin films obtained by galvanostatic anodization in black acacia pyroligny liqueur Open
The condensation of smoke from the pyrolysis of black wattle for the production of charcoal generates a by-product known as pyroligneous liquor. It is widely used in the agricultural area as a fertilizer and phytosanitiser, and its chemica…
View article: Obtaining a nanoporous Layer by the Anodizing Process on AISI 316L Steel to Obtain Better Corrosion Resistance Properties in Metallic Biomaterials Applications
Obtaining a nanoporous Layer by the Anodizing Process on AISI 316L Steel to Obtain Better Corrosion Resistance Properties in Metallic Biomaterials Applications Open
AISI 316L is a metallic biomaterial used in Unified Health System (SUS) due to low cost. However, corrosion in AISI 316L is a major cause of premature failure and toxic reactions to implants. Nanotubular or nanoporous anodized layers have …
View article: Study of the use of food waste as bioadsorbents to remove methylene blue dye
Study of the use of food waste as bioadsorbents to remove methylene blue dye Open
The disposal of untreated effluents and the lack of efficient and effective treatment have raised concerns. In this sense, methylene blue dye is classified as a priority contaminant among the dyes released into industrial effluents. It is …
View article: A comparison between the titanium-based and the zinc phosphate dispersion conditionings of zinc phosphate baths
A comparison between the titanium-based and the zinc phosphate dispersion conditionings of zinc phosphate baths Open
Phosphating is a metallic surface treatment widely used in the industrial environment as it provides greater adhesion of the paint film to the metallic substrate and greater efficiency in inhibiting corrosion. The conditioning agents in th…
View article: Obtaining TiO<sub>2</sub> Nanostructures by Electrospinning and Analysis of Absorbance in the UVA Spectrum for Photocatalytic Application
Obtaining TiO<sub>2</sub> Nanostructures by Electrospinning and Analysis of Absorbance in the UVA Spectrum for Photocatalytic Application Open
The synthesis of fibers by electrospinning allows for obtaining nanostructures of one-dimensional materials with good flexibility, optical and catalytic properties, high surface area and porosity. They can be used in applications such as: …
View article: BEHAVIOR OF THE ENERGY PROPERTIES OF WOODEN BRIQUETTES FROM THE COMBINED ACTION OF THE PRESSURE AND SATURATION OF ITS MICROSTRUCTURE WITH CARBONACEOUS SOLIDS
BEHAVIOR OF THE ENERGY PROPERTIES OF WOODEN BRIQUETTES FROM THE COMBINED ACTION OF THE PRESSURE AND SATURATION OF ITS MICROSTRUCTURE WITH CARBONACEOUS SOLIDS Open
ABSTRACT It is known that the increase in energy density of wood can also be obtained from the production of briquettes from this biomass residue. Due to the high compaction of these residues, the briquettes obtained from this have energy …
View article: Organic-Inorganic Films with Anticorrosive and Bactericidal Properties for Titanium Implants
Organic-Inorganic Films with Anticorrosive and Bactericidal Properties for Titanium Implants Open
This study seeks to synthesize, by the sol-gel method, an organic-inorganic hybrid coating of polyurethane, siloxane and silver nanoparticles to cover titanium prostheses, aiming to act as an anticorrosive protection barrier, inhibiting th…
View article: DEPOSITION OF FIBERS OF DIFFERENT OXIDES ON GLASS SUBSTRATES FOR THE PHOTOCATALYTIC PRODUCTION OF HYDROGEN
DEPOSITION OF FIBERS OF DIFFERENT OXIDES ON GLASS SUBSTRATES FOR THE PHOTOCATALYTIC PRODUCTION OF HYDROGEN Open
ABSTRACT The photocatalytic production of hydrogen has been considered a promising option to obtain energy in an environmentally sustainable way. Porous and crystalline semiconductors are often used as photocatalysts in hydrogen production…
View article: SYNTHESIS, CHARACTERIZATION AND PHOTOCATALYTIC BEHAVIOR OF TiO 2 AND TiO 2 /WO 3 FIBERS
SYNTHESIS, CHARACTERIZATION AND PHOTOCATALYTIC BEHAVIOR OF TiO 2 AND TiO 2 /WO 3 FIBERS Open
Summary The degradation of organic contaminants by heterogeneous photocatalysis is a promising option to replace conventional water treatment systems. The most used semiconductor in photocatalysis is TiO 2 due to some specific characterist…
View article: Photodecomposition of water\ethanol mixtures for the production of hydrogen using as catalysts TiO2 fibers
Photodecomposition of water\ethanol mixtures for the production of hydrogen using as catalysts TiO2 fibers Open
The consumption of hydrogen as an automotive fuel has been growing since the 1980s. It can be used both as a gasoline blend and as a pure fuel. All human activities involve the use of energy. Some examples are: fuels for transport and heat…
View article: PHOTODEGRADATION OF METHYL ORANGE DYE USING TITANIUM AND TUNGSTEN OXIDES FIBERS AS SEMICONDUCTORS
PHOTODEGRADATION OF METHYL ORANGE DYE USING TITANIUM AND TUNGSTEN OXIDES FIBERS AS SEMICONDUCTORS Open
ABSTRACT Photodegradation is a good economical alternative for removing organic pollutants from water, and several semiconductor metal oxides have been used in the photodegradation of organic compounds. The use of TiO2, as a semiconductor …
View article: Preparation of polymer solutions for the obtaining of nanofibers by electrospinning / Preparação de soluções poliméricas para a obtenção de nanofibras por electrospinning
Preparation of polymer solutions for the obtaining of nanofibers by electrospinning / Preparação de soluções poliméricas para a obtenção de nanofibras por electrospinning Open
The preference for using nanomaterials is due to properties such as small particle size, diversified shape and large specific surface area. Numerous polymer solutions can be prepared for use in electrospinning, such as: polyvinyl alcohol (…
View article: STUDY OF DOUBLE PRESSURE EFFECT ON COLD SINTERING OF FERROUS CHIPS
STUDY OF DOUBLE PRESSURE EFFECT ON COLD SINTERING OF FERROUS CHIPS Open
It is not economically advantageous to recycle iron and steel products via siderurgy or foundry for the manufacture of small parts. An alternative process for this is the reuse of ferrous metals through the Powder Metallurgy technique. Amo…
View article: Absorbance determination and photocatalytic production of hydrogen using tungsten and TiO2 oxide nanostructures As catalyst
Absorbance determination and photocatalytic production of hydrogen using tungsten and TiO2 oxide nanostructures As catalyst Open
In this paper, we described the production of hydrogen using the water splitting method, in which catalytic reactions activate a photocatalyst in the presence of UVA/vis light. This catalyst breaks the water molecule, from which hydrogen i…
View article: Propriedades ópticas e colorimetria de fibras obtidas por electrospinning descritas pelo sistema Ciel-a*b* / Optical properties and colorimetry of electrospinning fibers described by the Ciel-a*b* system
Propriedades ópticas e colorimetria de fibras obtidas por electrospinning descritas pelo sistema Ciel-a*b* / Optical properties and colorimetry of electrospinning fibers described by the Ciel-a*b* system Open
Para que as impressões visuais sejam percebidas pelos nossos olhos, várias informações são recebidas e emitidas ao cérebro. As células oculares responsáveis pelo recebimento destas informações são os cones e os bastonetes. Os cones são res…