scholarly journals In situ interfacial surface modification of hydrophilic silica nanoparticles by two organosilanes leading to stable Pickering emulsions

RSC Advances ◽  
2019 ◽  
Vol 9 (68) ◽  
pp. 39611-39621
Author(s):  
Yafit Itzhaik Alkotzer ◽  
Franziska Grzegorzewski ◽  
Eduard Belausov ◽  
Einat Zelinger ◽  
Guy Mechrez
Keyword(s):  
Surface Modification ◽  
Silica Nanoparticles ◽  
Opposite Polarity ◽  
Pickering Emulsions ◽  
Interfacial Surface ◽  
Oil In Water

Oil-in-water Pickering emulsions are stabilized by in situ functionalization of hydrophilic silica nanoparticles with two organosilane precursors of opposite polarity in a two-step emulsification procedure.

scholarly journals Pickering emulsions stabilized by hydrophilic nanoparticles: in situ surface modification by oil

Soft Matter ◽  
2016 ◽  
Vol 12 (32) ◽  
pp. 6858-6867 ◽  
Author(s):  
Bernard P. Binks ◽  
Dezhong Yin
Keyword(s):  
Surface Modification ◽  
Pickering Emulsions ◽  
Oil In Water

We propose a novel route for the stabilization of oil-in-water Pickering emulsions using inherently hydrophilic nanoparticles.

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 In situ Fabrication of Multi-Walled Carbon Nanotubes/Silica Hybrid Colloidosomes by Pickering Emulsion Templating Using Trialkoxysilanes of Opposite Polarity

Polymers ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1480 ◽  
Author(s):  
Grzegorzewski ◽  
Benhaim ◽  
Alkotzer ◽  
Zelinger ◽  
Yaakov ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Silica Nanoparticles ◽  
Droplet Size ◽  
Opposite Polarity ◽  
Pickering Emulsions ◽  
Volume Percentage ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Emulsion Templating ◽  
Silica Hybrid

A simple and effective way to prepare multi-walled carbon nanotubes (MWNT)//silica hybrid microcapsules (colloidosomes) is presented. These microcapsules have been generated by emulsion templating in a biphasic oil-in-water (o/w) system. Two trialkoxysilanes of complementary polarity, (3-aminopropyl)triethoxysilane (APTES) and dodecyltriethoxysilane (DTES), were used to chemically immobilize the silica nanoparticles at the o/w interface and stabilize the as-generated Pickering emulsions. The effects of varying the o/w ratio and the concentration of the added solids on the type of emulsion formed, the oil droplet size, as well as the emulsion stability have been investigated. The emulsion phase fraction was dependent on the silica content while the droplet size increased with increasing oil volume percentage. A solid shell emerged around the oil droplets from copolymerization between silane monomers. The thickness of the resulting shells was several hundreds of nm. Although MWNTs and silica nanoparticles both were co-assembled at the o/w interface, silica has shown to be the sole stabilizer, with APTES being crucial for the formation of the shell structure. Drop-casting of the emulsion and air-drying led to hierarchical open porous MWNT-silica nanocomposites. These new structures are promising as electrically conductive thin films for variety of applications, such as electro-optics, encapsulation, or chemical sensing.

Core Flooding of Complex Nanoscale Colloidal Dispersions for Enhanced Oil Recovery by in Situ Formation of Stable Oil-in-Water Pickering Emulsions

2016 ◽  
Vol 30 (4) ◽  
pp. 2628-2635 ◽  
Author(s):  
Ki Youl Yoon ◽  
Han Am Son ◽  
Sang Koo Choi ◽  
Jin Woong Kim ◽  
Won Mo Sung ◽  
...  
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Colloidal Dispersions ◽  
Pickering Emulsions ◽  
Core Flooding ◽  
Oil In Water ◽  
In Situ Formation

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).

Switchable Pickering Emulsions Stabilized by Silica Nanoparticles Hydrophobized in Situ with a Conventional Cationic Surfactant

Langmuir ◽  
2015 ◽  
Vol 31 (11) ◽  
pp. 3301-3307 ◽  
Author(s):  
Yue Zhu ◽  
Jianzhong Jiang ◽  
Kaihong Liu ◽  
Zhenggang Cui ◽  
Bernard P. Binks
Keyword(s):  
Silica Nanoparticles ◽  
Cationic Surfactant ◽  
Pickering Emulsions

Switchable Pickering Emulsions Stabilized by Silica Nanoparticles Hydrophobized In Situ with a Switchable Surfactant

2013 ◽  
Vol 125 (47) ◽  
pp. 12599-12602 ◽  
Author(s):  
Jianzhong Jiang ◽  
Yue Zhu ◽  
Zhenggang Cui ◽  
Bernard P. Binks
Keyword(s):  
Silica Nanoparticles ◽  
Pickering Emulsions

Switchable Pickering Emulsions Stabilized by Silica Nanoparticles Hydrophobized In Situ with a Switchable Surfactant

2013 ◽  
Vol 52 (47) ◽  
pp. 12373-12376 ◽  
Author(s):  
Jianzhong Jiang ◽  
Yue Zhu ◽  
Zhenggang Cui ◽  
Bernard P. Binks
Keyword(s):  
Silica Nanoparticles ◽  
Pickering Emulsions
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