Silica Nanoparticles: Preparation, Characterization and Applications in Biomedicine

Key Parameters for the Rational Design, Synthesis, and Functionalization of Biocompatible Mesoporous Silica Nanoparticles

“…The acid-catalyzed mechanisms are preceeded by the rapid deprotonation of the substituents bonded to Si, whereas under basic conditions, the hydroxide ion serves as a nucleophile that attacks the silicon atom center of the tetraalkoxysilane. The result of this step is a silanol and an alkoxide ion [12,24].…”

“…Nanomaterials can be broadly classified according to their organic or inorganic composition. Organic nanomaterials include polymeric nanostructures, dendrimers, lipid bilayers and virus and proteic particles, whereas inorganic nanomaterials are composed of metals, oxides, nitrides, halides, carbonates and chalcogenides, to name some [12]. Among the inorganic materials, nanosized silica has been extensively studied and employed in a wide range of applications [13].…”

“…Therefore, monodispersed colloidal silica particles with uniform shape, size and composition have demonstrated significant potential, not only in physical chemistry, being used to investigate the dynamic behavior and stability of particulate systems, but Nanomaterials can be broadly classified according to their organic or inorganic composition. Organic nanomaterials include polymeric nanostructures, dendrimers, lipid bilayers and virus and proteic particles, whereas inorganic nanomaterials are composed of metals, oxides, nitrides, halides, carbonates and chalcogenides, to name some [12]. Among the inorganic materials, nanosized silica has been extensively studied and employed in a wide range of applications [13].…”

Insecticidal activity of Silica, Zinc and Copper nanoparticles against the German cockroach, Blatella germanica (L.) (Dictyoptera: Blattellidae)

“…They found that the absorption peak for ZnO-NPs is between 357-378 nm. Morales et al (2019) reported that SiO2-NPs had an absorption peak of 325 nm. The absorption peaks for CuO-NPs have been reported to be in the range of 500-670 nm (Gondwal and Pant, 2018;Kesbi et al, 2018;Vivekanandhan et al, 2021b).…”

Nanotecnología Aplicada en Materiales Refractarios: Una Revisión

“…Este nanomaterial presenta algunas ventajas como: elevada resistencia y dureza, alto punto de fusión, resistencia a la corrosión y capacidad aislante (Sezavar, Zebarjad, & Sajjadi, 2015). La estabilidad mecánica de la alúmina es un factor importante para el desarrollo de nuevas estructuras, ya que proporciona alta compactibilidad y resistencia a la contracción (Khalilpourazary & Salehi, 2019 (Khalilpourazary & Salehi, 2019) Nanopartículas de sílice (SiO 2 ) Estos nanomateriales se caracterizan por tener un soporte de sílice con poros entre un rango de tamaño de 2 a 50 nm, generando una superficie externa y otra al interior de los poros, de allí su versatilidad para ser utilizada en el campo de la biotecnología y la ciencia de materiales (Morales, Castán, Ortega, & Ruiz, 2019). A continuación, en la Figura 10, se presenta la estructura y una micrografía de las nanopartículas de sílice mesoporosa.…”