This study focuses on the functionalized modification of Ti-6Al-4V and CoCrMo alloys substrates widely used by biomedical domain as total joint replacements (TJRs) hip knee. To improve corrosion resistance these devices, nanostructured columnar zirconium (Zr) thin films were produced oblique angle deposition (OAD) using DC magnetron sputtering to model particular design joint. The influence ang...

Abstract The copper‐catalyzed electrochemical CO 2 reduction reaction represents an elegant pathway to reduce emissions while producing a wide range of valuable hydrocarbons. selectivity for these products depends strongly on the structure and morphology copper catalyst. However, continued deactivation during catalysis alters obtained product spectrum. In this work, we report stabilizing effect...

Free indium concentrations can be determined using AGNES (Absence of Gradients and Nernstian Equilibrium Stripping) with no relevant hindrance from the irreversibility In3+/In° redox couple at a mercury electrode. The electroactivity, high lability mobility In hydroxy species help in reaching conditions for relatively moderate ratio (deposition time):(gain), which decreases increasing pH due to...

Exhibiting a very high surface area, good electrical conductivity and density of active sites, nitrogen-doped graphenic materials are considered as promising catalysts for the oxygen reduction reaction (ORR). Seldom studied in acidic media, N-doped foams were tested here cathode polymer electrolyte membrane fuel cell (PEMFC). The prepared via solvothermal-based process, by reacting either cyclo...

The reduction process for some quinones has been studid by cyclic voltammeby, rotating disk electrode voltammetry and chronopotentiometry in chloroform at platinum, gold and glassy carbon electrodes using tetrabutylmonium perchlorate (TB AP) as supporting eiectrolyte. The results obtained from this study reveal that the reduction of the quinones is two one-electron processes, the first redu...

Intercalation of lithium into Ag-CNTs sample is reported here. We have used a nano-porous silver foam as a frame for deposition of the CNTs   inside   the   pores   by   electrophoresis   deposition   (EPD) technique. By using  chronopotentiometry method,  we  have noticed that the Li storage capacity of the prepared Ag-CNTs electrode was improved  noticeably  in  comparison  with  literature. ...

The practical energy required for water dissociation reaction in bipolar membrane (BPM) is still substantially higher compared to the thermodynamic equivalent. This determined by voltage, consisting of (1) potential and (2) undesired voltage losses. Since pH gradient over BPM affects both components, this work, leveraged decrease BPM-voltage. We investigate effect four flow orientations: 1) co-...

the reduction process for some quinones has been studid by cyclic voltammeby, rotating disk electrode voltammetry and chronopotentiometry in chloroform at platinum, gold and glassy carbon electrodes using tetrabutylmonium perchlorate (tb ap) as supporting eiectrolyte. the results obtained from this study reveal that the reduction of the quinones is two one-electron processes, the first reductio...