Herein, we describe the use of Pd nanoparticles immobilized on an amino-functionalized siliceous mesocellular foam for the catalytic oxidation of H2O. The Pd nanocatalyst proved to be capable of mediating the four-electron oxidation of H2O to O2, both chemically and photochemically. The Pd nanocatalyst is easy to prepare and shows high chemical stability, low leaching, and recyclability. Togeth...

A novel type of material encapsulating phase-change materials (PCMs) is reported concerning their implication for use as thermal energy storage devices. The composites of siliceous SBA-15 or carbonaceous CMK-3 mesoporous assemblies and organic PCMs could be used to make leak-free devices that retain their capabilities over many thermal cycles for heat storage/release. A confinement effect was o...

The Chah-Bagh gold occurrence is located in Muteh mining district, in the central part of the Sanandaj-Sirjan zone. Gold mineralization occurs in ductile to ductile-brittle shear zones and is comparable with orogenic gold deposits. Silicification and sulfidization are the most important hydrothermal alteration features in the inner parts of altered shear zones and coincide most closely with the...

Recent trends in material research and development of composite materials are geared towards reducing cost, recycling ensuring environmental sustainability. Agricultural waste derivatives have proven to be an alternative or complimentary reinforcement the metal matrix composites. The current work is investigation microstructure phase characterization rice husk ash (RHA) obtained through open ai...

Soil development and erosion are important opposing processes in the evolution of high-mountainous landscapes, though their dynamics not fully understood. We compared soil between a calcareous siliceous chronosequence central Swiss Alps at high altitudes, which both cover formation over Holocene. calculated element mass balances, long-term rates based on meteoric 10Be we determined formation. a...