Effect of the composition and conditions of the synthesis of porous glass on their micro- and mesoporous structures

Крейсберг, В. А.; Антропова, Т. В.; Kalinina, S. V.

doi:10.1134/s1087659614050071

Cited by 14 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…GC chemical composition is the following: 0.25 Na 2 O – 3.42 B 2 O 3 – 96.09 SiO 2 – 0.24 Ag 2 O. The sample preparation is a complex and multi-stage procedure, which includes PG fabrication that is based on two-phase alkali borosilicate glass thermal treatment and the following chemical etching to delete a borate phase [ 21 , 22 ]. The final impregnation procedure with silver/copper halides is described elsewhere [ 23 ].…”

Section: Materials Laser Procedures and Modellingmentioning

confidence: 99%

Real-Time Analysis of Laser-Induced Plasmon Tuning in Nanoporous Glass Composite

et al. 2020

View full text Add to dashboard Cite

Laser-induced structuring in nanoporous glass composites is promising for numerous emerging applications in photonics and plasmonics. Local laser irradiation activates an interplay of photo-thermo-chemical mechanisms that are extremely difficult to control. The choice of optimum laser parameters to fabricate structures with desired properties remains extremely challenging. Another challenging issue is the investigation of the properties of laser-induced buried structures. In this paper, we propose a way to control the plasmonic structures formation inside a nanoporous glass composite with doped silver/copper ions that are induced by laser irradiation. Experimental and numerical investigations both demonstrate the capacities of the procedure proving its validity and application potential. In particular, we register transmitted laser power to analyse and control the modification process. Spectral micro-analysis of the irradiated region shows a multilayer plasmonic structure inside the glass composite. Subsequently, the effective medium theory connects the measured spectral data to the numerically estimated size, concentration, and chemical composition of the secondary phase across the initial GC sample and the fabricated structure.

show abstract

Section: Materials Laser Procedures and Modellingmentioning

confidence: 99%

Real-Time Analysis of Laser-Induced Plasmon Tuning in Nanoporous Glass Composite

et al. 2020

View full text Add to dashboard Cite

show abstract

“…To obtain porous glass materials the following methods are used: through chemical etching (leaching) of two-phase glass with interpenetrating phases [ 16 ], the sol-gel method [ 17 ], template synthesis method [ 18 ] and replica method [ 19 ], which consists in sequential mixing of glass powder, solution for impregnation of the polymer matrix with further high temperature treatment of the finished mixture. The disadvantages of these methods are rather strict limitations on the pore size.…”

Section: Introductionmentioning

confidence: 99%

Barium-Strontium Titanate/Porous Glass Structures for Microwave Applications

Tumarkin

Tyurnina

et al. 2020

Materials

View full text Add to dashboard Cite

Based on porous silicate glasses obtained by ion exchange, glass-ceramic materials containing a solid solution of barium-strontium titanate with a dielectric constant of more than 100 at microwaves, were synthesized for the first time. Glass-ceramic structures were studied using X-ray diffraction, secondary electron microscopy, Mössbauer spectroscopy and porometry methods. Electrical characteristics such as permittivity and losses of as-prepared and annealed in oxygen medium samples were also investigated at microwaves. It was shown that the method of obtaining porous glasses, due to ion exchange between KFeSi glass and LiNO3 and NaNO3 melts, allows for controlling a wide range of pore sizes and makes it possible to form glass porous structures with pores of the required size. The efficiency of the process of filling a porous matrix with a ferroelectric filler was investigated and the average depth of its penetration was estimated. It was shown that annealing glass-ceramic structures in an oxygen environment had a positive effect on their structural and electrical characteristics. Glass-ceramic structures demonstrate a significant increase in permittivity and a decrease in losses after high-temperature treatment in oxygen.

show abstract

“…In this work, two-phase alkali-borosilicate (ABS) glass of three compositions with the plant heat treatment [3] ) (NK-3, the heat treatment is 550°С 30 h) in the form of plates of 15 × 15 × 2 mm were exposed to leaching in acid-salt solutions in order to eliminate the chemically unstable phase according to the procedure described in [4]. The PG whose compositions are given in Table 1 were investigated on the content of Lewis basic and Brøn-sted acidic centers on the internal surface of the PG (the PG specimens were assigned individual designations) (Table 2).…”

mentioning

confidence: 99%

Effect of Formation Conditions on the Functional Composition of the Surface of High-Silica Porous Glass

et al. 2018

View full text Add to dashboard Cite

The possibility of controlling the content and ratio of Brønsted acid to Lewis base centers on the surface of high-silica porous glass (PG) with various compositions based on two-phase alkali-borosilicate glass by varying the conditions of the preparation of PG during the acid work-up of the initial glass is shown. The results demonstrate the possibility to control the features of the surface of the PG, and in particular, the ratio of silanol to siloxane structures.

show abstract

Effect of the composition and conditions of the synthesis of porous glass on their micro- and mesoporous structures

Cited by 14 publications

References 19 publications

Real-Time Analysis of Laser-Induced Plasmon Tuning in Nanoporous Glass Composite

Real-Time Analysis of Laser-Induced Plasmon Tuning in Nanoporous Glass Composite

Barium-Strontium Titanate/Porous Glass Structures for Microwave Applications

Effect of Formation Conditions on the Functional Composition of the Surface of High-Silica Porous Glass

Contact Info

Product

Resources

About