Buscar
Mostrando ítems 1261-1270 de 3167
Photoelectroactivity of Bismuth Vanadate Prepared by Combustion Synthesis: Effect of Different Fuels and Surfactants
(Soc Brasileira Quimica, 2014-04-01)
The bismuth vanadate (BiVO4) is a semiconductor that has attracted much attention due to the photocatalytic efficiency in the visible light region. The objective of this work was to synthesize monoclinic BiVO4 by solution ...
Improvement of the photocatalytic activity of magnetite by Mn-incorporation
(Elsevier B.V., 2014-02-01)
Mn-incorporated Fe3O4 photocatalysts were prepared by a simple co-precipitation method. Photocatalytic discoloration of Methylene Blue (MB) was used to evaluate the performance of these catalysts. The DSC results have shown ...
Volumetric microleakage assessment of glass-ionomer-resin composite hybrid materials
(Quintessence Publ Co Inc, 1999-02-01)
Objective: This study was intended to quantify the marginal leakage of three glass-ionomer-resin composite hybrid materials and compare it with the leakage exhibited by a glass-ionomer cement and a bonded resin composite ...
Dip-coating deposition of resistive BiVO4 thin film and evaluation of their photoelectrochemical parameters under distinct sources illumination
(2016-01-01)
Resistive monoclinic bismuth vanadate (BiVO4) nanocrystals in the form of thin films were obtained by the solution combustion synthesis coupled with the dip-coating deposition process. The structure, morphology, and optical ...
The plasmonic effect of gold nanorods on charged molecules: SERRS and SEF effects
(2021-01-01)
Target molecules adsorbed onto metallic nanoparticles can have their Raman and/or fluorescence signals enhanced, leading to the called surface-enhanced [resonance] Raman scattering (SE[R]RS) or surface-enhanced fluorescence ...
Marginal leakage evaluation of three endodontic sealers according to the moment of post preparation
(2012-01-01)
Objectives: The purpose of this in vitro study was to evaluate the coronal marginal leakage after post space preparation in teeth filled with three different sealers, according to the period between the root canal filling ...
Effectiveness of surface protection for resin-modified glass-ionomer materials
(1999-06-01)
Objective: The purpose of this study was to evaluate the effectiveness of various surface treatments for resin-modified glass-ionomer restorative materials by determining dye uptake spectrophotometrically. Method and ...
Volumetric microleakage assessment of glass-ionomer-resin composite hybrid materials
(1999-02-01)
Objective: This study was intended to quantify the marginal leakage of three glass-ionomer-resin composite hybrid materials and compare it with the leakage exhibited by a glass-ionomer cement and a bonded resin composite ...
Microleakage of hydrophilic adhesive systems in Class V composite restorations
(2001-02-01)
Purpose: To investigate the microleakage of four hydrophilic adhesive systems: one multiple-bottles (Scotchbond Multi-Purpose Plus); two one-bottle (Single Bond, Stae); and one self-etching (Etch & Prime 3.0). Materials ...
Multilayered TiO2/TiO2−x/TiO2 films deposited by reactive sputtering for photocatalytic applications
(2021-08-14)
Multilayered TiO2/TiO2−x/TiO2 films, deposited by twenty periodical interruptions of O2 flow during reactive sputtering deposition were submitted to photocatalytic tests and characterized. The O2 flow interruptions lasted ...