Rechargeable aqueous aluminium batteries are the subject of growing interest, however, charge storage mechanisms at manganese oxide-based cathodes remain poorly understood. In essense, every study proposes a different mechanism. Here, an in situ spectroelectrochemical methodology is used to unambiguously demonstrate that reversible proton-coupled MnO2-to-Mn2+ conversion main mechanism occurring...

The effect of zirconium on the microstructure, phase composition, and mechanical properties AlCuYb AlCuGd alloys was studied. microstructure as-cast did not consist new intermetallic phases with other elements, so fully dissolved in aluminum matrix. AlCuYbZr/AlCuGdZr demonstrated higher hardness values compared to AlCuYb/AlCuGd due precipitation Al3(Zr,Yb) Al3(Zr,Gd) phases, which were formed d...

HIGHLIGHTS • A strain of Penicillium citreosulfuratum was isolated from corroded metal. The fungus formed biofilm on the surface aluminum wire. This grew in presence 50 mM Al3+ liquid medium. Thyme, oregano, and melaleuca essential oils inhibited this growth.

Аннотация For two scheduling problems (O3||Cmax and AL3||Cmax) tight bounds of the optima localization intervals are found in terms of lower bounds (C̃ and Ĉ, respectively) computable in linear time. The main part of the proof was made with an aid of computer. As a by-product, we obtain linear-time approximation algorithms for solving these problems with worst-case performance ratios 4/3 and 5/3...

A Schiff base compound 6-amino-5-(((2-hydroxynaphthalen-1-yl)methylene)amino)-2-mercaptopyrimidin-4-ol (AHM) in acetonitrile solvent is found to show “OFF–ON type” mode upon addition of Al3+ ion and successfully applied for selective recognition ion. In this work, the reconsideration excited state intramolecular proton transfer (ESIPT) twisted charge (TICT) has been explored detail based on den...

Hydrogen (H2) is regarded as a promising and renewable energy carrier to achieve sustainable future. Among the various H2 production routes, photocatalytic water splitting has received particular interest; it strongly relies on optical structural properties of photocatalysts such their sunlight absorption capabilities, transport properties, amount oxygen vacancy. Perovskite oxides have been wid...

The search for inexpensive, environmentally friendly, and highly effective catalysts to activate C-H bonds in propane dehydrogenation (PDH) reactions is still a major challenge. Co-based have gained significant attention recent years due their excellent ability high selectivity towards olefins, despite being non-noble unfriendly metal. However, further improvements are necessary practical utili...

Cellulose nanofibers (CNFs) prepared via 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-mediated oxidation of the C6 primary hydroxyls native cellulose to carboxylates are used as pseudocatalysts for enhancing aluminum powder/pure water reactions. The Al reaction is a stepwise reaction. It starts from hydration outmost Al2O3 thin layer and then inner metallic with water. At lower temperatures (<5...