Formation of Core–Shell Bimetallic Nanostructures in Alkali Silicate Glasses in the Course of Silver and Copper Ion Exchange and Thermal Treatment

2015 ◽  
Vol 119 (33) ◽  
pp. 19344-19349 ◽  
Author(s):  
Ivan A. Demichev ◽  
Nikolai V. Nikonorov ◽  
Alexander I. Sidorov
Keyword(s):  
Thermal Treatment ◽  
Ion Exchange ◽  
Copper Ion ◽  
Silicate Glasses ◽  
Core Shell ◽  
Alkali Silicate ◽  
Bimetallic Nanostructures

Effect of Cerium on the Ion-Exchange Parameters in Alkali Silicate Glasses

2005 ◽  
Vol 31 (5) ◽  
pp. 602-605 ◽  
Author(s):  
T. V. Bocharova ◽  
Yu. A. Zhatkin ◽  
G. O. Karapetyan
Keyword(s):  
Ion Exchange ◽  
Silicate Glasses ◽  
Alkali Silicate ◽  
Exchange Parameters

Superior co-catalysis by bimetallic nanostructure for TiO2 photocatalysis

2020 ◽  
Vol 01 ◽  
Author(s):  
Bonamali Pal ◽  
Anila Monga ◽  
Aadil Bathla
Keyword(s):  
Visible Light ◽  
Catalytic Performance ◽  
Transition Metal Catalysts ◽  
Core Shell ◽  
Structural Morphology ◽  
Tio2 Photocatalysis ◽  
Co Catalysts ◽  
Bimetallic Nanocomposites ◽  
Bimetallic Nanostructure ◽  
Bimetallic Nanostructures

Background:: Bimetallic nanocomposites have currently gained significant importance for enhanced catalytic applications relative to monometallic analogues. The synergistic interactions modified electronic and optical properties in the bimetallic (M1@M2) structural morphology e.g., core-shell /alloy nanostructures resulted in a better co-catalytic performance for TiO2 photocatalysis. Objective:: Hence, this article discusses the preparation, characterization, and co-catalytic activity of different bimetallic nanostructures namely, Cu@Zn, Pd@Au, Au@Ag, and Ag@Cu, etc. Method:: These bimetallic co-catalysts deposited on TiO2 possess the ability to absorb visible light due to surface plasmonic absorption and are also expected to display the new properties due to synergy between two distinct metals. As a result, they reveal the highest level of activity than the monometal deposited TiO2. Result:: Their optical absorption, emission, charge carrier dynamics, and surface structural morphology are explained for the improved photocatalytic activity of M1@M2 loaded TiO2 for the hydrogenation of certain organic compounds e.g., quinoline, crotonaldehyde, and 1,3-dinitrobenzene, etc. under UV/ visible light irradiation. Conclusion:: It revealed that the use of bimetallic core@shell co-catalyst for hydrogenation of important industrial organics by M1@M2-TiO2 nanocomposite demonstrates beneficial reactivity in many instances relative to conventional transition metal catalysts.

Influence of impurity ions on nonlinear coloration of alkali silicate glasses

1996 ◽  
Author(s):  
Oleg M. Efimov ◽  
Yurii A. Matveev ◽  
Andrei M. Mekryukov
Keyword(s):  
Silicate Glasses ◽  
Alkali Silicate ◽  
Impurity Ions

scholarly journals The Influence of Environment in the Alteration of the Stained-Glass Windows in Portuguese Monuments

Heritage ◽  
2018 ◽  
Vol 1 (2) ◽  
pp. 365-376 ◽  
Author(s):  
Teresa Palomar ◽  
Pedro Redol ◽  
Isabel Cruz Almeida ◽  
Eduardo Pereira da Silva ◽  
Marcia Vilarigues
Keyword(s):  
Analytical Techniques ◽  
Soda Lime ◽  
Silicate Glasses ◽  
High Humidity ◽  
Atmospheric Conditions ◽  
Stained Glass ◽  
Mixed Alkali ◽  
Alkali Silicate ◽  
High Humidity Environment ◽  
Humidity Environment

This work presents the results of the exposure of soda-lime, potash-lime and mixed-alkali silicate glasses during ten and twenty months in different Portuguese monuments with historical stained-glass windows to characterize the influence of local environmental conditions. The glass samples were exposed in the Monastery of Batalha (Batalha), the Monastery of Jerónimos (Lisbon), and the Cathedral of Évora (Évora). A set of analytical techniques to assess the physicochemical effects were used, including optical microscopy and Fourier transform infrared spectroscopy. All the samples presented crystalline deposits on their surface; however, their quantity and nature depended on the atmospheric conditions during the days before the collection. Potash-lime silicate glass was the most altered glass in comparison with soda-lime and mixed-alkali silicate glasses. The samples from the Cathedral of Évora showed a high content of dust and salts on their surface but without severe chemical pathologies; however, those samples exposed in the Monastery of Jerónimos and the Monastery of Batalha presented alteration layers due to a high humidity environment.

Colour Centres in Alkali Silicate Glasses.

1955 ◽  
Vol 3 (3_4) ◽  
pp. 255-260
Author(s):  
A. Kats ◽  
J. M. Stevels
Keyword(s):  
Silicate Glasses ◽  
Colour Centres ◽  
Alkali Silicate

Effects of silver ion exchange and subsequent treatments on the UV–VIS spectra of silicate glasses. I. Undoped, CeO2-doped, and (CeO2+Sb2O3)-codoped photo-thermo-refractive matrix glasses

2013 ◽  
Vol 378 ◽  
pp. 213-226 ◽  
Author(s):  
Evgenii M. Sgibnev ◽  
Alexander I. Ignatiev ◽  
Nikolay V. Nikonorov ◽  
Andrei M. Efimov ◽  
Evgenii S. Postnikov
Keyword(s):  
Ion Exchange ◽  
Silver Ion ◽  
Silicate Glasses

The density of alkali silicate glasses over wide compositional ranges

1998 ◽  
Vol 239 (1-3) ◽  
pp. 197-202 ◽  
Author(s):  
B. Tischendorf ◽  
C. Ma ◽  
E. Hammersten ◽  
P. Venhuizen ◽  
M. Peters ◽  
...  
Keyword(s):  
Silicate Glasses ◽  
Alkali Silicate
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