Abstract The paper presents the results of studies effect electromagnetic, ultrasonic and acid treatments on structure adsorption index alkaline-earth bentonite modified with nanoparticles silicon oxide aluminum. Studies have shown that contribute to an increase in capacity by 5, 10, 25%, respectively. Modification stabilized nanodispersed hydrosols amorphous (6-10.5 nm) crystalline boehmite (3...

The effects of dual doping by trivalent and monovalent cations on the thermoelectric properties CaMnO3−δ ceramics were investigated. Na+ was selected as cation, while three rare-earth (R) La3+, Gd3+, Dy3+ used to study role their size mass in electrical thermal transport properties. Dense ceramic samples with a nominal composition Ca1−x(R1/2Na1/2)xMnO3 (x = 0.1, 0.2, 0.3) fabricated via convent...

Photochromism has been reported for several rare-earth (RE) metal oxyhydride thin films and is characterized by a reversible darkening of the sample when exposed to light with energy greater than its optical bandgap. Here, we extend range known photochromic RE-oxyhydrides include samarium oxyhydrides. These SmH3?2xOx are made reactive magnetron sputtering as-deposited SmH1.9+? post-oxidation in...

The utilization of phosphoric acid in various sectors, e.g., food industry, is controlled by the authorized concentration limit impurities. However, industrial contaminated with undesirable impurities (such as F, Al, Fe, Mg, etc.). Herein, this study aimed to evaluate efficiency membrane purification process pretreated using a premodified nanofiltration membrane. We demonstrated that prior pret...

Cyclic organic compounds with several ether linkages in their structure are of much concern our daily life applications. Crown ethers (CEs) generally heterocyclic and extremely versatile exhibiting higher binding affinity. In recent years, due to unique structure, crown widely used drug delivery, solvent extraction, cosmetics manufacturing, material studies, catalysis, separation, synthesis. Be...

A C102H30 graphene sheet has been rolled up to construct Single-Walled Carbon NanoTube Fragments (SWCNTFs) as parts of armchair carbon nanotubes by computational quantum chemistry methods. Non-covalent cation-π interactions of the Na+ cation on the central rings of SWCNTFs have investigated. The binding energies of the Na+-SWCNTF complexes versus ...