Hydride formation and dynamic phase changes during template-assisted Pd electrodeposition.

We investigated the structural evolution of electrochemically fabricated Pd nanowiresby means of grazing-incidence transmission small- and wide-angle x-ray scattering (GTSAXS and GTWAXS), x-ray fluorescence (XRF) and two-dimensional surface optical reflectance (2D-SOR). This shows how electrodeposition and the hydrogen evolution reaction (HER) compete and interact during Pd electrodepositon. During the bottom-up growth of the nanowires, we show that-phase Pd hydride is formed.

Growth of Ultrathin Single-Crystalline IrO(110) Films on a TiO(110) Single Crystal.

The growth of a flat, covering, and single-crystalline IrO(110) film with controlled film thickness on a single-crystalline TiO(110) substrate is reported. The preparation starts with a deposition of metallic Ir at room temperature followed by a post-oxidation step performed in an oxygen atmosphere of 10 mbar at 700 K. On this surface, additional Ir can be deposited at 700 K in an oxygen atmosphere of 10 mbar to produce a IrO(110) layer with variable thicknesses.