One-step synthesis of golf ball-like thiol-functionalized silica particles

In this work, silica microcapsules containing phosphonium ionic liquid (IL), denoted SiO2@IL, were successfully synthesized for the first time using the one step sol-gel method in IL/H20 emulsion. The morphologies of the obtained micron-size microcapsules, including their diameter distribution, were characterized using dynamic light scattering (DLS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The thermal behavior of these microcapsules and the mass fraction of the encapsulated IL in the silica microcapsules were determined using thermogravimetric analysis, showing an excellent thermal stability (up to 220 °C) and highlighting that an amount of 20 wt.% of IL is contained in the silica microcapsules. In a second step, SiO2@IL microcapsules (1 wt.%) were dispersed into epoxy-amine networks to provide proof of concept of the ability of such microcapsules to act as healing agents as microcracks propagate into the epoxy networks.

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Properties of anion exchange membrane based on polyamine: Effect of functionalized silica particles prepared by sol–gel method

Solid State Ionics ◽

10.1016/j.ssi.2018.04.022 ◽

2018 ◽

Vol 322 ◽

pp. 85-92 ◽

Cited By ~ 7

Author(s):

Narges Ataollahi ◽

Elisa Cappelletto ◽

Keti Vezzù ◽

Vito Di Noto ◽

Gianni Cavinato ◽

...

Keyword(s):

Anion Exchange ◽

Sol Gel ◽

Silica Particles ◽

Anion Exchange Membrane ◽

Functionalized Silica ◽

Gel Method ◽

Sol Gel Method ◽

Exchange Membrane

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Structural Colors Based on Amorphous Arrays Comprised Solely of Silica Particles

Applied Sciences ◽

10.3390/app10010420 ◽

2020 ◽

Vol 10 (1) ◽

pp. 420

Author(s):

Dae-San Choi ◽

Ju-Hwan Choi ◽

Chang-Yull Lee

Keyword(s):

Phenol Formaldehyde ◽

Sol Gel ◽

Silica Particles ◽

Phenol Formaldehyde Resin ◽

Formaldehyde Resin ◽

Structural Colors ◽

Convection Oven ◽

Sol Gel Process ◽

One Step ◽

The Stöber Method

In this study, structural colors were fabricated by producing an amorphous array with atypical silica particles. The colors were controlled by an array of silica particles with different sizes. In previous research, the process required inducement of the amorphous array, which was complex. Meanwhile, in this paper, we proposed a simple one-step process. First, spherical silica nanoparticles were synthesized using the sol-gel process of the Stöber method. Atypical silica particles that induced an amorphous array were produced by adding a small amount of phenol-formaldehyde resin. Subsequently, the colloidal silica was converted to a powder using a convection oven. The characteristics of the synthesized silica particles were confirmed using a scanning electron microscope (SEM). All the synthesized silica powders obtained structural colors. Finally, the silica powders were dispersed in deionized (DI) water and coated on a glass slide. We confirmed that the silica particles showed different structural colors depending on the size of the particles. We also found that the color was highly independent of the viewing angle.

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One-pot preparation of boronic acid and PEG bi-functionalized silica particles for separation and purification of catecholamine from rat serum

New Journal of Chemistry ◽

10.1039/c5nj01965f ◽

2015 ◽

Vol 39 (11) ◽

pp. 8848-8854 ◽

Cited By ~ 9

Author(s):

Yan Wang ◽

Lei Sun ◽

Bingqing Yu ◽

Shaotong Li ◽

Shian Zhong

Keyword(s):

Protein Adsorption ◽

Boronic Acid ◽

Silica Particles ◽

Functionalized Silica ◽

Separation And Purification ◽

Step Method ◽

One Pot ◽

Rat Serum ◽

One Step

A novel boronate absorbent with the ability to resist protein adsorption was synthesized by a one step method.

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Synthesis of novel adsorbent based on tetrasulfide-functionalized fibrous silica KCC-1 for removal of Hg(II) cations

Scientific Reports ◽

10.1038/s41598-021-90279-3 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Azam Marjani ◽

Reza Khan Mohammadi

Keyword(s):

Effective Interaction ◽

Sol Gel ◽

Aqueous Media ◽

Synthesis Method ◽

Mercury Ions ◽

Toxic Heavy Metals ◽

Uptake Capacity ◽

Hydrothermal Preparation ◽

Ultrasonic Assisted ◽

First Time

AbstractHg(II) has been identified to be one of the extremely toxic heavy metals because of its hazardous effects and this fact that it is even more hazardous to animals than other pollutants such as Ag, Au, Cd, Ni, Pb, Co, Cu, and Zn. Accordingly, for the first time, tetrasulfide-functionalized fibrous silica KCC-1 (TS-KCC-1) spheres were synthesized by a facile, conventional ultrasonic-assisted, sol–gel-hydrothermal preparation approach to adsorb Hg(II) from aqueous solution. Tetrasulfide groups (–S–S–S–S–) were chosen as binding sites due to the strong and effective interaction of mercury ions (Hg(II)) with sulfur atoms. Hg(II) uptake onto TS-KCC-1 in a batch system has been carried out. Isotherm and kinetic results showed a very agreed agreement with Langmuir and pseudo-first-order models, respectively, with a Langmuir maximum uptake capacity of 132.55 mg g–1 (volume of the solution = 20.0 mL; adsorbent dose = 5.0 mg; pH = 5.0; temperature: 198 K; contact time = 40 min; shaking speed = 180 rpm). TS-KCC-1was shown to be a promising functional nanoporous material for the uptake of Hg(II) cations from aqueous media. To the best of our knowledge, there has been no report on the uptake of toxic Hg(II) cations by tetrasulfide-functionalized KCC-1 prepared by a conventional ultrasonic-assisted sol–gel-hydrothermal synthesis method.

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Electrochromic Performance and Capacitor Performance of α-MoO3 Nanorods Fabricated by a One-Step Procedure

Coatings ◽

10.3390/coatings11070783 ◽

2021 ◽

Vol 11 (7) ◽

pp. 783

Author(s):

Ying Duan ◽

Chen Wang ◽

Jian Hao ◽

Yang Jiao ◽

Yanchao Xu ◽

...

Keyword(s):

Growth Parameters ◽

Average Diameter ◽

Fast Response ◽

Cycle Stability ◽

Electrochromic Devices ◽

Step Procedure ◽

One Step ◽

Supercapacitor Performance ◽

First Time ◽

Prepared Nanorods

In this paper, we propose for the first time the synthesis of α-MoO3 nanorods in a one-step procedure at mild temperatures. By changing the growth parameters, the microstructure and controllable morphology of the resulting products can be customized. The average diameter of the as-prepared nanorods is about 200 nm. The electrochromic and capacitance properties of the synthesized products were studied. The results show that the electrochromic properties of α-MoO3 nanorods at 550 nm have 67% high transmission contrast, good cycle stability and fast response time. The MoO3 nanorods also exhibit a stable supercapacitor performance with 98.5% capacitance retention after 10,000 cycles. Although current density varies sequentially, the nanostructure always exhibits a stable capacitor to maintain 100%. These results indicate the as-prepared MoO3 nanorods may be good candidates for applications in electrochromic devices and supercapacitors.

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Manufacturing Processes of Solid Oxide Fuel Cell Components

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.336-338.498 ◽

2007 ◽

Vol 336-338 ◽

pp. 498-501

Author(s):

Xian Feng Jiang ◽

Min Fang Han ◽

Su Ping Peng

Keyword(s):

Fuel Cell ◽

Solid Oxide Fuel Cell ◽

Screen Printing ◽

Sol Gel ◽

Tape Casting ◽

Solid Oxide ◽

Oxide Fuel ◽

Cell Components ◽

One Step ◽

Made In

The all processes for manufacturing materials parts of solid oxide fuel cell (SOFC) are discussed in the paper. The films are made in one step by the ways of APS, VPS, EVD, which are usually used to produce the electrolyte and interconnect. The films are thin and good gas-resistance, but with relatively high cost. All parts of SOFC are made by the following ways, such as sol-gel, tape casting, tape calendaring and screen printing, which are suitable for manufacturing samples in industry with the cheapest process by co-sintered together ways.

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How Can the Introduction of Zr4+ Ions into TiO2 Nanomaterial Impact the DSSC Photoconversion Efficiency? A Comprehensive Theoretical and Experimental Consideration

Materials ◽

10.3390/ma14112955 ◽

2021 ◽

Vol 14 (11) ◽

pp. 2955

Author(s):

Aleksandra Bartkowiak ◽

Oleksandr Korolevych ◽

Gian Luca Chiarello ◽

Malgorzata Makowska-Janusik ◽

Maciej Zalas

Keyword(s):

Density Functional ◽

Sol Gel ◽

Dye Sensitized Solar Cells ◽

Positive Influence ◽

Photoconversion Efficiency ◽

Doped Tio2 ◽

Computational Calculations ◽

Tio2 Nanomaterials ◽

First Time ◽

Sensitized Solar Cells

A series of pure and doped TiO2 nanomaterials with different Zr4+ ions content have been synthesized by the simple sol-gel method. Both types of materials (nanopowders and nanofilms scratched off of the working electrode’s surface) have been characterized in detail by XRD, TEM, and Raman techniques. Inserting dopant ions into the TiO2 structure has resulted in inhibition of crystal growth and prevention of phase transformation. The role of Zr4+ ions in this process was explained by performing computer simulations. The three structures such as pure anatase, Zr-doped TiO2, and tetragonal ZrO2 have been investigated using density functional theory extended by Hubbard correction. The computational calculations correlate well with experimental results. Formation of defects and broadening of energy bandgap in defected Zr-doped materials have been confirmed. It turned out that the oxygen vacancies with substituting Zr4+ ions in TiO2 structure have a positive influence on the performance of dye-sensitized solar cells. The overall photoconversion efficiency enhancement up to 8.63% by introducing 3.7% Zr4+ ions into the TiO2 has been confirmed by I-V curves, EIS, and IPCE measurements. Such efficiency of DSSC utilizing the working electrode made by Zr4+ ions substituted into TiO2 material lattice has been for the first time reported.

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One-step synthesis of well-dispersed polypyrrole copolymers under gamma-ray irradiation

Polymer Chemistry ◽

10.1039/d0py01566k ◽

2021 ◽

Vol 12 (5) ◽

pp. 645-649

Author(s):

Yu Gu ◽

Yuqing Qiao ◽

Yusen Meng ◽

Ming Yu ◽

Bowu Zhang ◽

...

Keyword(s):

Room Temperature ◽

Gamma Ray ◽

Gamma Ray Irradiation ◽

One Step ◽

First Time

Herein, we report for the first time the synthesis of polypyrrole copolymers with good solvent-dispersibility under gamma-ray irradiation at room temperature in air.

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