Catalase-Loaded Silica Nanoparticles Formulated via Direct Surface Modification as Potential Oxygen Generators for Hypoxia Relief

2021 ◽  
Vol 13 (5) ◽  
pp. 5945-5954
Author(s):  
Annie Y. Heble ◽  
Julien Santelli ◽  
Amanda M. Armstrong ◽  
Robert F. Mattrey ◽  
Jacques Lux
Keyword(s):  
Surface Modification ◽  
Silica Nanoparticles ◽  
Potential Oxygen

Surface modification of silica nanoparticles by hexarhenium anionic cluster complexes for pH-sensing and staining of cell nuclei

2021 ◽  
Vol 594 ◽  
pp. 759-769
Author(s):  
Alsu Khazieva ◽  
Kirill Kholin ◽  
Irek Nizameev ◽  
Konstantin Brylev ◽  
Ilya Kashnik ◽  
...  
Keyword(s):  
Surface Modification ◽  
Silica Nanoparticles ◽  
Ph Sensing ◽  
Cell Nuclei ◽  
Cluster Complexes ◽  
Anionic Cluster

Acidic/amphiphilic silica nanoparticles: new eco-friendly Pickering interfacial catalysis for biodiesel production

2017 ◽  
Vol 19 (19) ◽  
pp. 4552-4562 ◽  
Author(s):  
Bingyu Yang ◽  
Loïc Leclercq ◽  
Jean-Marc Clacens ◽  
Véronique Nardello-Rataj
Keyword(s):  
Surface Modification ◽  
Silica Nanoparticles ◽  
Biodiesel Production ◽  
Pickering Emulsions ◽  
Interfacial Catalysis

Silica nanoparticles have been designed by surface modification to stabilize solventless catalytic Pickering emulsions for effective biodiesel production.

scholarly journals Controlling Foam Morphology of Poly(methyl methacrylate) via Surface Chemistry and Concentration of Silica Nanoparticles and Supercritical Carbon Dioxide Process Parameters

2013 ◽  
Vol 2013 ◽  
pp. 1-13 ◽  
Author(s):  
Deniz Rende ◽  
Linda S. Schadler ◽  
Rahmi Ozisik
Keyword(s):  
Carbon Dioxide ◽  
Surface Modification ◽  
Supercritical Carbon Dioxide ◽  
Surface Chemistry ◽  
Silica Nanoparticles ◽  
Process Parameters ◽  
Process Conditions ◽  
Average Cell ◽  
Foam Morphology ◽  
Supercritical Carbon

Polymer nanocomposite foams have received considerable attention because of their potential use in advanced applications such as bone scaffolds, food packaging, and transportation materials due to their low density and enhanced mechanical, thermal, and electrical properties compared to traditional polymer foams. In this study, silica nanofillers were used as nucleating agents and supercritical carbon dioxide as the foaming agent. The use of nanofillers provides an interface upon which CO2nucleates and leads to remarkably low average cell sizes while improving cell density (number of cells per unit volume). In this study, the effect of concentration, the extent of surface modification of silica nanofillers with CO2-philic chemical groups, and supercritical carbon dioxide process conditions on the foam morphology of poly(methyl methacrylate), PMMA, were systematically investigated to shed light on the relative importance of material and process parameters. The silica nanoparticles were chemically modified with tridecafluoro-1,1,2,2-tetrahydrooctyl triethoxysilane leading to three different surface chemistries. The silica concentration was varied from 0.85 to 3.2% (by weight). The supercritical CO2foaming was performed at four different temperatures (40, 65, 75, and 85°C) and between 8.97 and 17.93 MPa. By altering the surface chemistry of the silica nanofiller and manipulating the process conditions, the average cell diameter was decreased from9.62±5.22to1.06±0.32 μm, whereas, the cell density was increased from7.5±0.5×108to4.8±0.3×1011cells/cm3. Our findings indicate that surface modification of silica nanoparticles with CO2-philic surfactants has the strongest effect on foam morphology.

Surface modification of silica nanoparticles using 4-aryloxy boron dipyrromethene (BODIPY) enhances skin permeation

2016 ◽  
Vol 4 (47) ◽  
pp. 7676-7680 ◽  
Author(s):  
Takaki Amamoto ◽  
Satoshi Hirakawa ◽  
Tomofumi Santa ◽  
Takashi Funatsu ◽  
Masaru Kato
Keyword(s):  
Surface Modification ◽  
Silica Nanoparticles ◽  
Skin Permeation ◽  
Boron Dipyrromethene

Surface modification of nanoparticles using BODIPY enhances skin permeation.

Surface modification and biological evaluation of kojic acid/silica nanoparticles as platforms for biomedical systems

2019 ◽  
Vol 17 (1) ◽  
pp. 380-391 ◽  
Author(s):  
Gracielle Ferreira Andrade ◽  
Gesiane da S. Lima ◽  
Pedro Lana Gastelois ◽  
Dawidson Assis Gomes ◽  
Waldemar Augusto de Almeida Macedo ◽  
...  
Keyword(s):  
Surface Modification ◽  
Silica Nanoparticles ◽  
Kojic Acid ◽  
Biological Evaluation ◽  
Biomedical Systems

Designing bijels formed by solvent transfer induced phase separation with functional nanoparticles

Soft Matter ◽  
2019 ◽  
Vol 15 (16) ◽  
pp. 3379-3388 ◽  
Author(s):  
Stephen Boakye-Ansah ◽  
Matthew S. Schwenger ◽  
Martin F. Haase
Keyword(s):  
Surface Modification ◽  
Phase Separation ◽  
Silica Nanoparticles ◽  
Functionalized Silica ◽  
Functional Nanoparticles ◽  
Functionalized Silica Nanoparticles ◽  
Solvent Transfer

Functionalized silica nanoparticles with or without in situ surface modification are used to fabricate bijels via solvent transfer induced phase separation (STrIPS).

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