One-Step Index-Tunable Antireflection Coatings from Aggregated Silica Nanoparticles

2012 ◽  
Vol 4 (12) ◽  
pp. 6426-6431 ◽  
Author(s):  
Kevin T. Cook ◽  
Kwadwo E. Tettey ◽  
Robert M. Bunch ◽  
Daeyeon Lee ◽  
Adam J. Nolte
Keyword(s):  
Silica Nanoparticles ◽  
Antireflection Coatings ◽  
Step Index ◽  
One Step

Facile One-Step Dialysis Strategy for Preparation of Porous Silica Nanoparticles with Rough Surface

NANO ◽  
2020 ◽  
Vol 15 (03) ◽  
pp. 2050038
Author(s):  
Zhe Chen ◽  
Jiaqiong Xu ◽  
Xuechen Xiang ◽  
Dongfang Ren ◽  
Ning Chen ◽  
...  
Keyword(s):  
Silica Nanoparticles ◽  
Rough Surface ◽  
Mesoporous Silica Nanoparticles ◽  
Porous Silica ◽  
Catalytic Performance ◽  
Ammonia Solution ◽  
Type Iv ◽  
Organic Surfactant ◽  
One Step ◽  
Adsorption Desorption

In this study, porous silica nanoparticles were fabricated in the absence of organic surfactant template at room temperature by a facile one-step dialysis method. By using a dialysis system comprising an ammonia solution as the dialysate, a series of porous silica nanoparticles with a rough surface (e.g., raspberry-like) were obtained by the initiation of a homogeneous ternary tetraethylsilicate-water-ethanol system with different ammonia solution concentrations. The specific surface area and pore volume of porous nanoparticles were regulated by changing the dialysate concentrations. N2 adsorption–desorption measurements revealed that the porous silica nanoparticles owned both mesopores and micropores and exhibited a type IV isotherm, hence, these nanoparticles can be used as mesoporous silica nanoparticles (MSNs). The Au@MSN nanocomposite can be used as a catalyst for the typical reduction of 4-nitrophenol to 4-aminophenol by NaBH4 and exhibited excellent catalytic performance.

Surface-initiated polymerization-induced self-assembly of bimodal polymer-grafted silica nanoparticles towards hybrid assemblies in one step

2016 ◽  
Vol 7 (34) ◽  
pp. 5347-5350 ◽  
Author(s):  
Yang Zheng ◽  
Yucheng Huang ◽  
Zaid M. Abbas ◽  
Brian C. Benicewicz
Keyword(s):  
Silica Nanoparticles ◽  
Self Assembly ◽  
Surface Initiated Polymerization ◽  
First Case ◽  
One Step ◽  
Hybrid Assemblies

The first case of surface-initiated polymerization-induced self-assembly (SI-PISA) by polymerizing benzyl methacrylate from SiO2-g-(PHEMA, CPDB) in methanol is reported.

scholarly journals Fabrication of redispersible silica nanoparticles by a facile one-step one-pot approach

2020 ◽  
Vol 213 ◽  
pp. 01018
Author(s):  
Haitao Liu ◽  
Hailin Cao ◽  
Yudong Huang ◽  
Pengcong Shao ◽  
Yiwu Yan
Keyword(s):  
Fourier Transform ◽  
Silica Nanoparticles ◽  
Particle Morphology ◽  
Synthesis Process ◽  
Methyl Groups ◽  
High Concentration ◽  
One Pot ◽  
Ultrasonic Process ◽  
One Step ◽  
Methyl Pyrrolidone

In this study, special redispersible silica nanoparticles (SNP) was synthesized by a facile one-step one-pot approach. The synthesized amorphous SNP had a spherical and uniform particle morphology with a diameter of 30 nm and exhibited high monodispersity. The characteristics of the particles were investigated by fourier transform infrared spectroscopy and thermogravimetric analysis. The results revealed that there were a large number of methyl groups grafted on the surface of the SNP, and the organic materials content in the as-synthesized SNP was approximately 10%. After a simple ultrasonic process, the SNP solid powder showed excellent stable and transparent redispersion in various organic solvents. In addition, the results revealed that the different polarities of the solvents had a significant effect on the visible light transparency of the SNP redispersion. SNP showed the best redispersion performance in N-methyl-pyrrolidone, exhibiting a transmittance of more than 80% at 600 nm at a high concentration of 25 wt%. The synthesis process developed in this study is simple, inexpensive, and can be used in the industrial application of SNP.

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