Rapid wet chemical synthesis of bioactive glass with high yield by probe sonication.

Bioactive glasses (BGs) are inorganic biomaterials which possess favourable properties for bone repair and regeneration. The biological properties of the BGs depend on their physical features. This manuscript describes a simple methodology for rapid synthesis of BG nanoparticles (NPs) with tailored physical properties using ultrasonic disruption produced by an ultrasonic probe.

Elucidating the role of earth alkaline doping in perovskite-based methane dry reforming catalysts.

To elucidate the role of earth alkaline doping in perovskite-based dry reforming of methane (DRM) catalysts, we embarked on a comparative and exemplary study of a Ni-based Sm perovskite with and without Sr doping. While the Sr-doped material appears as a structure-pure SmSrNiO Ruddlesden Popper structure, the undoped material is a NiO/monoclinic SmO composite. Hydrogen pre-reduction or direct activation in the DRM mixture in all cases yields either active Ni/SmO or Ni/SmO/SrCO materials, with albeit different short-term stability and deactivation behavior.

The sol-gel autocombustion as a route towards highly CO-selective, active and long-term stable Cu/ZrO methanol steam reforming catalysts.

The adaption of the sol-gel autocombustion method to the Cu/ZrO system opens new pathways for the specific optimisation of the activity, long-term stability and CO selectivity of methanol steam reforming (MSR) catalysts. Calcination of the same post-combustion precursor at 400 °C, 600 °C or 800 °C allows accessing Cu/ZrO interfaces of metallic Cu with either amorphous, tetragonal or monoclinic ZrO, influencing the CO selectivity and the MSR activity distinctly different. While the CO selectivity is less affected, the impact of the post-combustion calcination temperature on the Cu and ZrO catalyst morphology is more pronounced.

Towards the colonization of Mars by in-situ resource utilization: Slip cast ceramics from Martian soil simulant.

Here we demonstrate that by applying exclusively Martian resources a processing route involving suspensions of mineral particles called slurries or slips can be established for manufacturing ceramics on Mars. We developed water-based slurries without the use of additives that had a 51 wt. % solid load resembling commercial porcelain slurries in respect to the particle size distribution and rheological properties.