E.m.f. studies of electrolytic dissociation. Part 7.—Some alkali and alkaline earth metal hydroxides in water

1954 ◽  
Vol 50 (0) ◽  
pp. 965-972 ◽  
Author(s):  
F. G. R. Gimblett ◽  
C. B. Monk
Keyword(s):  
Alkaline Earth ◽  
Earth Metal ◽  
Alkaline Earth Metal ◽  
Metal Hydroxides ◽  
Electrolytic Dissociation

Synthesizing Alkaline Earth Metal Hydroxides Nanoparticles through an Innovative, Single-Step and Eco-Friendly Method

2019 ◽  
Vol 286 ◽  
pp. 3-14 ◽  
Author(s):  
Giuliana Taglieri ◽  
Valeria Daniele ◽  
Ludovico Macera
Keyword(s):  
Alkaline Earth ◽  
Aqueous Suspension ◽  
Exchange Process ◽  
Earth Metal ◽  
Single Step ◽  
Alkaline Earth Metal ◽  
Monoclinic Crystal ◽  
Metal Hydroxides ◽  
Crystal Lattices ◽  
Ion Exchange Process

The objective of this paper is to introduce a patented and eco-friendly method to synthesize aqueous suspension of all types of alkaline-earth metal hydroxides nanoparticles (NPs). This method is based on an ion exchange process; the exchange takes place at ambient temperature/pressure, starts from cheap or renewable reagents and, in one single step, results in the creation of the crystalline desired nanoparticles in only a few minutes. In terms of structural and morphological features, the synthesized nanoparticles are characterized by means of XRD-Rietveld refinement, FTIR, and TEM. In particular, we obtained pure and crystalline magnesium and calcium hydroxide suspensions, showing the typical brucite crystal structure with a hexagonal lamellar morphology and dimensions generally <100 nm. With respect to the strontium and barium hydroxide suspensions, we observed different kinds of hydroxides (either anhydrous and hydrate forms), characterized by orthorhombic or monoclinic crystal lattices with rod-like nanostructured morphologies. Despite the different morphologies, all synthesized nanoparticles appear constituted by a superimposition of primary nanoparticles, of dimensions ranging from a few to 15 nm, correlated to the increase in the atomic number of the alkaline earth metal.

Impact of Alkaline Earth Metal Doping on the Stability of Perovskite Solar Cells

2019 ◽  
Author(s):  
Nga Phung ◽  
Hans Köbler ◽  
Diego Di Girolamo ◽  
Thi Tuyen Ngo ◽  
Gabrielle Sousa e Silva ◽  
...  
Keyword(s):  
Solar Cells ◽  
Alkaline Earth ◽  
Perovskite Solar Cells ◽  
Earth Metal ◽  
Alkaline Earth Metal ◽  
Metal Doping ◽  
The Stability
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