Secondary ion mass spectrometric investigation on ruthenium oxide systems: a comparison between poly- and nanocrystalline deposits

Secondary ion mass spectrometry and X‐ray photoelectron spectroscopy investigation on chemical vapor deposited CeO2ZrO2TiO2 thin films

“…In fact, positive‐ion surface spectra of the as‐grown CeO 2 /ZrO 2 /cordierite samples showed species related both to CeO 2 and to ZrO 2 single‐phase coatings (Ce + , CeH + , CeO x + (x = 1, 2), CeOH + , Zr + , ZrO x + (x = 0–2)), as well as to cordierite substrate (Mg + , Mg 2 O + , Si + , Si 2 + , Si 2 O + , Al + , Al 2 + , Al 2 O + , AlO + ). Moreover, as often observed for similar samples,19,20 signals coming from processing contamination were distinguished (Li + , CH x + (x = 0, 3), Na + , K + , Ca + , Cl + , CaO + ). Taking into account that surface XPS analysis for the same coatings did not detect the presence of ZrO 2 in ceria film before the annealing process, signals related to ZrO 2 or substrate distinguished by SIMS are a consequence of different sampling depth and enhanced sensitivity with respect to XPS 20,21…”

Preparation and Characterization of Antimony-Doped Tin Dioxide Electrodes. Part 1. Electrochemical Characterization

“…1 These electrodes consist of a titanium substrate covered with an oxide coating, whose composition strongly affects their electrochemical behavior. Thus, RuO 2 -based film-electrodes are commonly used for chlorine production, [2][3][4][5] but, notwithstanding their good catalytic activity also for the oxygen evolution reaction (OER), they are unsuitable for applications where OER is the anode reaction, because of its very short service life. In fact, IrO 2based film electrodes perform much better under the latter polarization conditions.…”

“…These electrodes consist of a titanium substrate covered with an oxide coating, whose composition strongly affects their electrochemical behavior. Thus, RuO 2 -based film-electrodes are commonly used for chlorine production, − but, notwithstanding their good catalytic activity also for the oxygen evolution reaction (OER), they are unsuitable for applications where OER is the anode reaction, because of its very short service life. In fact, IrO 2 -based film electrodes perform much better under the latter polarization conditions. − For applications such as electrochemical oxidation of organic compounds, the electrode material requires a minimal catalytic activity toward the OER and PbO 2 and SnO 2 layers may be used. − Although stability and electrochemical activity of DSA-type electrodes are largely determined by the nature of the active component, i.e., RuO 2 or IrO 2 , considerable improvements can be achieved by adding an adequate promoter. − …”

Ruthenium complexes as precursors for chemical vapor-deposition (CVD)

“…Barison et al also studied nanocrystalline RuO 2 and Ru lms obtained from Ru(COD)(h 3 -allyl) 2 (COD ¼ cycloocta-1,5-diene) on metallic titanium discs at a temperature of 300 C by the electrocatalytic O 2 evolution. 142,143 Recently, Ando et al 144 reported the synthesis of a series of Ru(0) cyclooctatetraene complexes for MOCVD (metal organic chemical vapor deposition) applications. A melting point relation of the CVD precursors is reported and shown in Fig.…”