Sentences with phrase «magnetite surfaces»

The remarkable behaviour of platinum atoms on magnetite surfaces could lead to better catalysts.

The two platinum atoms must once again find separate places on the magnetite surface.

It sounds a bit like an unhappy love story: «Two platinum atoms would actually like to be together, but the magnetite surface keeps them apart,» says Roland Bliem (TU Wien).

The lifting process frees the atom from the tight grip of the magnetite, and together, the molecule and the platinum atom can start moving around randomly across the magnetite surface.

We can watch single atoms as they wander across the magnetite surface or bond with each other.

Not exact matches

But in 2003 two papers noted that there are other ways to make magnetite crystals, such as slamming a rock from space onto the Martian surface.

But on an atomic scale, it has remarkable properties: on magnetite, single metal atoms are held in place, or they can be made to move across the surface.

On other surfaces, pair formation would be favoured, but magnetite does not allow that,» says Roland Bliem.

First, the surface charge on a particle of magnetite (a form of iron oxide) depends on the pH of the solution surrounding it: below pH 6 it is positive, and above it is negative.

When the scientists examined the cells in the growing communities closely, they found nanoparticles of magnetite on the surface of cells and, in some cases, grains of the iron mineral connecting microbial pairs.

Having shown that chemically modified magnetite (Fe2CrO4) meets the basic criteria required for an air stable, visible light photocatalyst, the investigators plan to carry out experiments in which they will transfer freshly grown Fe2CrO4 surfaces to a photoelectrochemical cell under a dry nitrogen atmosphere to avoid picking up surface carbon contamination.