Buscar
Mostrando ítems 21-30 de 868
Chemiresistive sensing with chemically modified metal and alloy nanoparticles
(Wiley, 2012-01)
This review describes the use of chemically-modified pure and alloy metal nanoparticles for chemiresistive sensing applications. Chemiresistors are materials that change their resistance in the presence of a particular ...
Growth Mechanisms and Tribocorrosion Behavior of Bio-Functionalized ZrO2 Nanoparticles-Containing MAO Coatings Formed on Ti-40Nb Alloy
(2021-06-01)
Tribocorrosion resistance, low elastic modulus, and faster promotion of osseointegration are among the current requirements to avoid aseptic loosening in artificial joints. Therefore, in this work, a promising orthopedic ...
Utilização do método hidrotérmico assistido por micro-ondas na síntese de catalisadores a base de SnO2 dopados com nióbio
(2016-07-01)
Microwave-Assisted hydrothermal synthesis of niobium-doped tin oxide nanoparticles, using niobium ethoxide and niobium pentoxide as precursors, was investigated. The prepared catalysts were used in the esterification ...
Controlled dispersion of ZnO nanoparticles produced by basic precipitation in solvothermal processes
(Elsevier, 2020)
Zinc oxide nanoparticles were successfully synthesized under precipitation processes, using ZnSO4⋅7H2O as a Zn2þ
precursor and K2CO3 used as a basic source, and hydrozincite was obtained as an intermediary, which was ...
Optical and thermal investigation of GeO2-PbO thin films doped with Au and Ag nanoparticles
(ELSEVIER SCIENCE SALAUSANNE, 2013-08-02)
The present work reports on the thermo-optical study of germanate thin films doped with Au and Ag nanoparticles. Transmission Electron Microscopy images, UV-visible absorption and Micro-Raman scattering evidenced the ...
Evidence of size-dependent effect of silica micro- and nano-particles on basal and specialized monocyte functions
(Future Medicine, 2017-12)
Aim: To analyze the effect of silica particles on monocyte/macrophage functions. Materials & methods: Silica micro- and nanoparticles were obtained by the Stober method. Their effect on monocyte/macrophage proliferation, ...
Electrofluid dynamic (EFD) energy conversion in gas flows with suspended nanoparticles
(IOS Press, 2010-01-01)
This work presents simulations of the Electrofluid Dynamic energy conversion process in slender channel devices having very small particles (in both micro and nano scales) as charge carriers. Solutions are discussed for a ...
Electrofluid dynamic (EFD) energy conversion in gas flows with suspended nanoparticles
(IOS Press, 2010-01-01)
This work presents simulations of the Electrofluid Dynamic energy conversion process in slender channel devices having very small particles (in both micro and nano scales) as charge carriers. Solutions are discussed for a ...
Photocatalytic preconcentration of Bi on TiO2 nanoparticles
(Pergamon-Elsevier Science Ltd, 2020-09)
Titanium dioxide nanoparticles (NP-TiO2) are implemented for the dispersive micro-solid phase extraction of Bi by photocatalytic adsorption by UVA irradiation (365 nm) in the presence of ethanol as a sacrificial agent. The ...
Síntese hidrotérmica assistida por micro-ondas de tiO2, e aplicação em nanocompósito
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Ciência e Engenharia de MateriaisProcessamento de Materiais a partir do Pó; Polímeros e Compósitos; Processamento de Materiais a part, 2013-03-04)
In recent decades have seen a sharp growth in the study area of nanoscience and nanotechnology and is included in this area, the study of nanocomposites with self-cleaning properties. Since titanium dioxide (TiO2) has high ...